Payments and on-ramps
1,121 sellers. How we check them: execution services: liveness, fees vs stated, settlement proof (status: watching). Most-bought first.
| Seller | Answering | Price | Buyers (30 days) | Paid answers correct | What it sells |
|---|---|---|---|---|---|
| X Pay | Yes | $0.005 | 116 | not checked yet | Payment receipt with transaction details |
| X Pay | Yes | $0.005 | 113 | not checked yet | Service status and payment configuration |
| X Pay | Yes | $0.005 | 113 | not checked yet | Payment quote with amount, asset, and merchant wallet |
| X Pay | Yes | $0.005 | 111 | not checked yet | Base network and USDC payment metadata |
| Oblique Markets | Yes | $0.010 | 64 | not checked yet | Use when an agent needs a trusted UTC timestamp or the smallest end-to-end test of its x402 payment client. Re |
| keyring-agent.blockchhub.link | Yes | $0.050 | 55 | not checked yet | Pay the send-native execution fee (native coin transfer) |
| Useless Fact | Yes | $0.001 | 55 | not checked yet | Pay a tiny amount of USDC and receive one delightfully useless fact. |
| Coin Flip | Yes | $0.001 | 55 | not checked yet | Flip a coin for a small USDC payment on Base mainnet. Returns heads or tails. |
| Horror Story API | Yes | $0.010 | 49 | not checked yet | Access the exclusive horror story collection (pay-per-read). |
| Fortune Generator | Yes | $0.010 | 49 | not checked yet | Get a random fortune via x402 payment on Base mainnet. |
| Roast Generator | Yes | $0.002 | 45 | not checked yet | Pay for a lighthearted developer roast generated on-demand. |
| Random Joke API | Yes | $0.002 | 42 | not checked yet | Get a random interesting joke. Secured with x402 payment protocol on Base mainnet. |
| Riddle Oracle | Yes | $0.002 | 40 | not checked yet | Pay a micro-fee in USDC on Base mainnet to receive a riddle and its answer. |
| Agent402 bestsellers | Yes | $0.005 | 19 | not checked yet | What agents actually pay for across a 500+ tool x402 catalog: the tools ranked by settled calls, distinct buye |
| BAGS Agent API | Yes | $0.010 | 18 | not checked yet | BAGS Agent API index — machine-readable directory of the agentic payment API, MCP server, and x402 payment sur |
| Pocket Network | Yes | $0.005 | 16 | not checked yet | Classify agent-bound text for prompt injection: a safe, suspicious, or malicious verdict with the patterns tha |
| trust402.vercel.app | Yes | $0.005 | 14 | not checked yet | Run a fast live probe for one x402 endpoint and summarize challenge/payment-flow readiness. |
| Bitrefill | Yes | $0.001 | 13 | not checked yet | Discover the Bitrefill x402 storefront: supported networks, the full route flow, and wallet persistence rules. |
| Bitrefill | Yes | $1000.000 | 12 | not checked yet | Pay a Bitrefill invoice in USDC via x402 to buy gift cards, eSIMs & mobile top-ups across 180+ countries. |
| BlockRun.AI | Yes | $0.011 | 12 | not checked yet | Anthropic-compatible Messages API — pay per token with USDC on Base |
| Hyperliquid Smart Money Data API | Yes | $0.001 | 11 | not checked yet | Hyperliquid perps (perpetual futures). What history exists before you pay for it: how many markets we track, w |
| Mycelium Finance | Yes | $0.050 | 11 | not checked yet | Mycelium Market Snapshot — live Mycelium Strategy liquidity allocation plus Solana top-performing tokens, in o |
| action402.vercel.app | Yes | $0.003 | 11 | not checked yet | Paid webhook/API execution for autonomous agents. Executes one public HTTPS action after x402 payment, applies |
| gateway.spraay.app | Yes | $0.020 | 10 | not checked yet | Send SMS notification for payment alerts. |
| HALOWERK Energy | Yes | $0.001 | 9 | not checked yet | Cheapest end-to-end x402 purchase test. Always returns a 402 challenge without payment and the current full Ne |
| HyperNatt Terminal | Yes | $0.001 | 9 | not checked yet | NattSwap cross-chain swap quote (Li.Fi) |
| x402.asterpay.io | Yes | $0.020 | 9 | not checked yet | Agent-readiness scan of any public website: scores 0-100 on MCP server, /.well-known/agent.json, llms.txt, Ope |
| SpendTheBits | Yes | $0.010 | 9 | not checked yet | Official $0.01 proof-of-life resource for SpendTheBits x402: returns a JSON heartbeat. Pay it to verify your a |
| Bitrefill | Yes | $0.002 | 8 | not checked yet | Create a price-locked USDC invoice for one or more gift cards, eSIMs, or mobile top-ups. |
| Problocks | Yes | $0.001 | 8 | not checked yet | Verify payment connectivity with USDC on Base. Returns a JSON pong and UTC timestamp after settlement. |
| Artillerist Wallet Test | Yes | $0.001 | 8 | not checked yet | Verify that an agent wallet can complete an x402 v2 payment using USDC on Base mainnet before purchasing produ |
| Oblique Markets | Yes | $0.010 | 8 | not checked yet | Use when an agent is checking that its x402 payment headers and query encoding survive a paid round trip. Retu |
| x402-factory | Yes | $0.001 | 8 | not checked yet | Cheapest endpoint: liveness plus x402 payment pipeline check — Returns ok with the server time and whether thi |
| open-pay.jp | Yes | $0.001 | 8 | not checked yet | End-to-end smoke test for x402 clients: returns a greeting plus the settlement timestamp, so an agent can prov |
| url2md | Yes | $0.005 | 7 | not checked yet | PDFs, JavaScript pages and ordinary HTML as clean Markdown. Pays a page's x402 toll for you. Follows robots.tx |
| Oblique Markets | Yes | $0.003 | 7 | not checked yet | Use when an agent needs bazaar seller rank. Returns x402 Bazaar seller leaderboard: top 25 seller addresses ra |
| payable.nsgoods.org | Yes | $0.005 | 7 | not checked yet | x402 payability check: reachable + well-formed 402 + (Solana) destination-ATA existence |
| Pocket Network | Yes | $0.005 | 7 | not checked yet | Search scholarly literature via OpenAlex: works with metadata and abstracts. POST /v1/literature with a {query |
| x402 Spend Cap/Allowance Check | Yes | $0.001 | 7 | not checked yet | x402 spend cap and allowance check by Liquid Logic X: call it before paying an x402 endpoint. Input: wallet (t |
| FractalAI x402 Notary | Yes | $0.005 | 7 | not checked yet | FractalAI Notary: pay for an independent ML-DSA-65 attestation of an x402 settlement. |
| monitor.memoryapi.org | Yes | $0.001 | 7 | not checked yet | x402 API activity stats — top endpoints by paid calls, trend data, and unique payer counts from memoryapi.org |
| RAVN | Yes | $0.001 | 6 | not checked yet | RAVN — best-price swap quotes across 20 execution venues and 17 chains, including native (non-wrapped) Bitcoin |
| nsgoods Solana Payment Check | Yes | $0.010 | 6 | not checked yet | Did this Solana payment really arrive? Verifies that a finalized mainnet transaction credited the exact amount |
| Quartermaster x402 Inspector | Yes | $0.002 | 6 | not checked yet | Inspect and lint any x402 paid endpoint: decodes the 402 payment challenge, names the network and asset, and f |
| Responses nano (OpenAI | Yes | $0.003 | 6 | not checked yet | OpenAI Responses API over x402 - point the OpenAI SDK's responses.create() (or the OpenAI Agents SDK) at base_ |
| api.aidress.ai | Yes | $0.002 | 6 | not checked yet | Korean exchange prices (Upbit, Bithumb) for a single token in KRW |
| app.heinrichstech.com | Yes | — | 6 | not checked yet | BitBooth echo endpoint — pays a tiny USDC fee, returns a JSON echo. Reference implementation of the x402 + CDP |
| Mart402 | Yes | $0.001 | 6 | not checked yet | PDF facts before you pay for parsing: page count, metadata, per-page text volume, scanned-or-not estimate. 0.0 |
| Maxwell x402 | Yes | $0.002 | 6 | not checked yet | x402 Doctor checkup of any x402 endpoint, without buying: whether it answers with a valid payment request, its |
| Pocket Network | Yes | $0.005 | 6 | not checked yet | SOFR, Fed funds, and other benchmark interest-rate series as stable JSON. POST /v1/rate with an optional serie |
| Pocket Network | Yes | $0.005 | 6 | not checked yet | Search Federal Register rulemaking: new and changed rules, comment windows, and docket links. POST /v1/federal |
| x402.forgemesh.io | Yes | $0.001 | 6 | not checked yet | Agent fortune API: a fortune cookie written specifically for AI agents ('A cached response is worth two upstre |
| Locus x402 Services | Yes | $0.008 | 6 | not checked yet | Locus public pay-per-use API |
| TWZRD Agent Intelligence | Yes | $0.001 | 5 | not checked yet | Seller wash risk and wallet reputation for a Solana x402 merchant: wash label, fleet %, payer count, plus tier |
| Cyre | Yes | $0.002 | 5 | not checked yet | Cyre Pay-route Oracle — before your agent pays any external x402 resource, grade payTo + amount/URL + facilita |
| Cyre | Yes | $0.001 | 5 | not checked yet | Cyre Gate — before your agent pays ANY other x402 service, grade the payTo counterparty + spend shape in one c |
| penny402 | Yes | $0.003 | 5 | not checked yet | One card per paying wallet per UTC day from a standard 78-card deck, upright or reversed, with the keywords fo |
| Atinamos JSON Validate / Repair | Yes | $0.005 | 5 | not checked yet | Deterministic JSON validation and conservative repair for AI-agent payloads. Repairs unquoted object keys, sin |
| Otto AI | Yes | $0.001 | 5 | not checked yet | Trade and transaction history for a user's Otto AI Safe account — swaps, bridges, deposits, withdrawals with t |
| Oblique Markets | Yes | $0.001 | 5 | not checked yet | Use when an agent needs oblique gateway. Returns Capped observer-backed gateway over five allowlisted proven s |
| Otto AI | Yes | $0.001 | 5 | not checked yet | Which protocols earn the most — and who is accelerating? Top 30 DeFi protocols by 24h fees, each with revenue, |
| QR Encode | Yes | $0.002 | 5 | not checked yet | Encode text= into a QR code as SVG (default) or format=dataurl PNG. Offline, no upstream. Built for agents put |
| x402 security audit | Yes | $0.010 | 5 | not checked yet | Grade any x402 seller's payment-security posture from the outside - a read-only black-box check mapped to the |
| SolEnrich | Yes | $0.005 | 5 | not checked yet | Cost and payback of one StonkFun trade at one size, no swap: entry and exit cost (transfer tax + price impact |
| Pocket Network | Yes | $0.005 | 5 | not checked yet | Cross-encoder reranking of retrieved documents by relevance to a query, at fixed model precision. POST /v1/rer |
| Pocket Network | Yes | $0.005 | 5 | not checked yet | US Code and CFR section lookup plus legislative bill tracking from govinfo. POST /v1/us with a {title} (and op |
| Pocket Network | Yes | $0.005 | 5 | not checked yet | BLS occupational employment and wage statistics by occupation and area. POST /v1/occupational with a {series} |
| x402 Doctor | Yes | — | 5 | not checked yet | Is this x402 endpoint safe to pay? Call it before your AI agent pays an endpoint it has not used before. Retur |
| Pocket Network | Yes | $0.005 | 5 | not checked yet | Canonical token metadata across 6 EVM chains: symbol, decimals, name, logo, and token-list provenance. POST /v |
| Musebook intel feed | Yes | $0.010 | 5 | not checked yet | Call when you want the current Musebook money-challenge leaderboard, trending lobby posts, and newest Playbook |
| gsc-x402.ai | Yes | $0.010 | 5 | not checked yet | GSC's payment door — a real one-cent settlement on Base, signed receipt returned. Prove your agent's payment s |
| grove.g-datalabs.com | Yes | $0.010 | 5 | not checked yet | Check CSV data for missing values, duplicate rows, schema mismatches and invalid types. Returns a deterministi |
| Vextorium | Yes | $0.004 | 5 | not checked yet | Solana wallet balances: SOL plus every SPL and Token-2022 token held (mint, amount, decimals), with USD value |
| x402dir.com | Yes | $0.001 | 5 | not checked yet | x402dir facilitator recommender: pick the best x402 payment facilitator by chain, token, and monthly volume. R |
| api.x402agentic.ai | Yes | $0.010 | 5 | not checked yet | Per-agent budget enforcement — track an agent's cumulative spend against a cap and block overspend. Part of x4 |
| Agent Payload Tools | Yes | $0.001 | 5 | not checked yet | Hash text, strings, or UTF-8 payload data with SHA256, SHA384, or SHA512. Compute a cryptographic hash, checks |
| x402-gateway | Yes | $0.001 | 5 | not checked yet | Paid ping — test the x402 payment flow end-to-end. Returns pong. Costs $0.001, exists so agents can verify the |
| Pay Per Demo | Yes | $0.010 | 5 | not checked yet | Pay once for virtual admission to Agentic Commerce Demo Day |
| scout.hugen.tokyo | Yes | $0.010 | 5 | not checked yet | Search GitHub repositories — discover open source projects, developer tools, and trending repos. AI agent API |
| Agent Utilities | Yes | $0.010 | 4 | not checked yet | Research outline 0.01 USDC (first pay · Base). Ladder: free GET /v0/sample-outline.json → POST /v0/outline → b |
| VAPE | Yes | $0.010 | 4 | not checked yet | VAPE bridges — Tracked bridges ranked by recent daily volume — bridge exploits are a top attack class, and thi |
| nsgoods Crypto Market Regime | Yes | $0.010 | 4 | not checked yet | CMC regime classification + strategy spec (USDC pay-per-call). Free preview: GET /regime/preview A bad or unsu |
| payload402 | Yes | $0.001 | 4 | not checked yet | npm license triage for coding agents — call immediately before npm install, yarn add, or pnpm add. Returns npm |
| QR Code & Identicon Generator | Yes | $0.005 | 4 | not checked yet | QR code generator — encode text, URLs, payment URIs, or arbitrary UTF-8 data as base64-encoded SVG or PNG in a |
| penny402 | Yes | $0.003 | 4 | not checked yet | A daily prophecy about the x402 economy for the wallet that paid, drawn from that day's pool and keyed to the |
| penny402 | Yes | $0.003 | 4 | not checked yet | One koan per paying wallet per UTC day, drawn from that day's pool and keyed to the address that paid: ask twi |
| VoidFeed | Yes | $0.050 | 4 | not checked yet | Returns verified, citation-backed facts about new AI model releases, benchmark scores, and protocol changes, e |
| SHA-256 hash | Yes | $0.005 | 4 | not checked yet | SHA-256 of any string or hex payload, returned as hex and as base64. The hash everything outside Ethereum uses |
| Oblique Markets | Yes | $0.003 | 4 | not checked yet | Use when an agent needs bazaar trending. Returns x402 Bazaar trending report: services gaining settled calls a |
| My usage (wallet-keyed purchase | Yes | $0.005 | 4 | not checked yet | Your own purchase history, keyed to the wallet that pays for the call - no wallet parameter, no signup: the x4 |
| AgentForge | Yes | $0.001 | 4 | not checked yet | Payment flow verification for agents integrating x402: confirms your wallet and payment channel work before yo |
| api.getplexa.com | Yes | $0.020 | 4 | not checked yet | Plexa /v1/quote — executable swap quote: the realizable fill price at your trade size, not a mid/spot price fe |
| Content moderation | Yes | $0.002 | 4 | not checked yet | Check text for harmful content using OpenAI moderation (omni-moderation-latest). Returns flagged status, categ |
| SolEnrich | Yes | $0.010 | 4 | not checked yet | Track record of a StonkFun creator (pass the wallet, or a coin mint to find who launched it): ESTABLISHED / MI |
| SolEnrich | Yes | $0.005 | 4 | not checked yet | StonkFun market regime in one call: RISK_ON / NEUTRAL / RISK_OFF from breadth (share of live coins up 24h) and |
| Pocket Network | Yes | $0.005 | 4 | not checked yet | Fetch an RSS or Atom feed and return it as one canonical JSON document: the feed title and its entries with ti |
| Settled | Yes | $0.002 | 4 | not checked yet | Signed check of an x402 endpoint before you pay it: who really pays it on Base (settlements and unique payers |
| Pocket Network | Yes | $0.005 | 4 | not checked yet | HTS tariff classification and duty rates for supply-chain and customs agents. POST /v1/trade with an {hs_code} |
| Pocket Network | Yes | $0.005 | 4 | not checked yet | Screen for SAM.gov exclusions: excluded parties by name, UEI, or CAGE with termination dates. POST /v1/debarme |
| Losbeto Market Intelligence | Yes | $0.020 | 4 | not checked yet | Jupiter swap quote with the best DEX route and expected slippage for a given pair and size, so an agent can pr |
| Losbeto Market Intelligence | Yes | $0.010 | 4 | not checked yet | Generate a valid static or amount-fixed PIX BR Code from ?key= plus optional name, city, amount, txid. Returns |
| Losbeto Market Intelligence | Yes | $0.001 | 4 | not checked yet | x402 hello-world: the cheapest live call on this node ($0.001), built for agents to smoke-test the full paymen |
| Pocket Network | Yes | $0.005 | 4 | not checked yet | Extract tables from documents into typed JSON: headers, rows, and cell types. POST /v1/table with {text} and g |
| Pocket Network | Yes | $0.005 | 4 | not checked yet | Detect and redact PII in text: find and mask names, addresses, SSNs, emails, and phone numbers. POST /v1/pii w |
| Pocket Network | Yes | $0.005 | 4 | not checked yet | US Treasury yields, debt, and fiscal series as stable JSON from FiscalData. POST /v1/treasury with a {series} |
| FractalAI Pay-per-Proof | Yes | $0.020 | 4 | not checked yet | Pay-per-Proof: one post-quantum ML-DSA-65 / Dilithium-3 (NIST FIPS 204) signature over your message/hash, x402 |
| FractalAI Verify | Yes | $0.010 | 4 | not checked yet | Pay-per-Verify: an agent pays $0.01 to verify a post-quantum (ML-DSA-65 / Dilithium-3 or Dilithium-2, NIST FIP |
| 47620 x402 Ecosystem Stats | Yes | $0.010 | 4 | not checked yet | A LIVE, sourced snapshot of x402 adoption across the public ecosystem: how many pay-per-call services are inde |
| Mart402 | Yes | $0.010 | 4 | not checked yet | Japan consumption tax: per-rate invoice rounding (one rounding per rate), qualified invoice (T+13) field valid |
| Forest Agent Tools | Yes | $0.002 | 4 | not checked yet | Discover machine-payable x402 services for a task by searching Bazaar resource metadata and returning normaliz |
| AgentFeed | Yes | $0.005 | 4 | not checked yet | Solana DEX quote from Jupiter for any SPL pair: output amount, price impact %, the route taken and the slippag |
| x402 Doctor | Yes | — | 4 | not checked yet | Why is my x402 endpoint broken? Diagnose and debug an x402 payment endpoint (or MCP server) when payments fail |
| Responses auto (OpenAI | Yes | $0.010 | 4 | not checked yet | OpenAI Responses API over x402 - point the OpenAI SDK's responses.create() (or the OpenAI Agents SDK) at base_ |
| Testnet faucet (try x402 free) | Yes | $0.001 | 4 | not checked yet | Fund any address with testnet money via the Coinbase faucet - USDC (1) or ETH (0.0001) on Base Sepolia, USDC ( |
| AI agent action preflight | Yes | $0.010 | 4 | not checked yet | Deterministic preflight check for a proposed AI agent action - a tool call, payment, fetch, or write - before |
| Onramp link (fund a wallet with | Yes | $0.001 | 4 | not checked yet | Generate a single-use Coinbase Onramp URL that lets a human fund any wallet with a card or Apple Pay - the fas |
| burn-once-secret-vault.jannioura.workers.dev | Yes | $0.010 | 4 | not checked yet | Store a secret (API key, webhook payload, signed URL) encrypted with WebCrypto AES-256-GCM and share a claim U |
| api.dripmetrics.ai | Yes | $0.050 | 4 | not checked yet | DripMetricsAI (api description at https://dripmetrics.ai/) provides on-demand market microstructure and risk m |
| b702.everygoodwork.io | Yes | $0.010 | 4 | not checked yet | a play of b702 — You can play it for the time you paid for. You don't own it — the creator still does. |
| thevaultreport.com | Yes | $0.010 | 4 | not checked yet | CFTC Commitments of Traders — weekly disaggregated futures positioning by commodity: managed-money long/short/ |
| Vextorium | Yes | $0.004 | 4 | not checked yet | Tamper-resistant price from Chainlink Data Feeds on Base (ETH/USD, BTC/USD, USDC/USD, or any Chainlink aggrega |
| Vextorium | Yes | $0.003 | 4 | not checked yet | Spanish tax ID validation (DNI/NIF, NIE and company CIF) with check-digit verification. Computed locally; the |
| Vextorium | Yes | $0.003 | 4 | not checked yet | BIC/SWIFT code validation and parsing: bank, country, location and branch codes, test-code flag. |
| Vextorium | Yes | $0.003 | 4 | not checked yet | IBAN validation (ISO 13616 mod-97 and per-country length, SEPA membership; for Spain also the national CCC che |
| convrgent.ai | Yes | $0.010 | 4 | not checked yet | Delete a human profile from the vault. Near-free pricing maintains consistent x402 payment flow for wallet ide |
| keyring-agent.blockchhub.link | Yes | $0.001 | 4 | not checked yet | Pay the swap-token execution fee (token-for-token swap) |
| Vextorium | Yes | $0.004 | 4 | not checked yet | Recent activity of a Solana address: latest transaction signatures with slot, time, success or failure and mem |
| Vextorium | Yes | $0.004 | 4 | not checked yet | Spanish Official State Gazette (BOE) daily summary: every item of a given day with section, department and off |
| Vextorium | Yes | $0.003 | 4 | not checked yet | Solana priority fee estimator: recent per-slot priority fees (min, median, p75, p90, max micro-lamports per CU |
| Vextorium | Yes | $0.003 | 4 | not checked yet | EU VAT number format validation for all member states (plus Spanish check digit). Does not query VIES. |
| agenticfinancegraph.com | Yes | $0.010 | 4 | not checked yet | Liveness card: L0–L9 rank with the evidence behind it: bindings, first and last observed payment, float, deleg |
| vendsdk.com | Yes | $0.002 | 4 | not checked yet | Generate a PNG QR code URL for payment and onboarding payloads (upstream probed live) |
| touchstone.locomot.io | Yes | $0.002 | 4 | not checked yet | Deterministic WMM2025 magnetic field (one location/date). Free sample, no payment required: GET /play/field |
| touchstone.locomot.io | Yes | $0.003 | 4 | not checked yet | Deterministic ephemeris snapshot (one location/time). Free sample, no payment required: GET /play/sky |
| touchstone.locomot.io | Yes | $0.005 | 4 | not checked yet | Timelock encryption (tlock / encrypt-to-the-future): seal a payload toward a future drand round — undecryptabl |
| shared-hold-api.onrender.com | Yes | $0.005 | 4 | not checked yet | Store payload to Shared Hold boundary - 0.005 USDC per successful hold |
| arn-x402-payguard-payment-security.rajdeep-dutta-in.workers.dev | Yes | $0.001 | 4 | not checked yet | Agent Reliability Network: ARN x402 PayGuard provides x402 payment security for autonomous AI agents. Check th |
| pathmint.edge.report | Yes | $0.010 | 4 | not checked yet | BEFORE YOU PAY an x402 402: ping this resource URL. Returns live or dead (ghost listing, timeout, non-complian |
| trust.nsgoods.org | Yes | $0.005 | 4 | not checked yet | Cross-chain ERC-8004 trust score for one (chain, agent) pair — signed JSON with transparent component breakdow |
| DDG Agent-Payable Services | Yes | $0.010 | 4 | not checked yet | DDG agent-payable service request |
| clink-lithium-vault.fly.dev | Yes | $0.005 | 4 | not checked yet | New agent services launched this week - every x402 listing and MCP server that appeared in the last N days, wi |
| clink-lithium-vault.fly.dev | Yes | $0.005 | 4 | not checked yet | Track one agent service over time - the full day-by-day history of any x402 listing or MCP server: price chang |
| agentbit.app | Yes | $0.002 | 4 | not checked yet | Decode a JSON Web Token (JWT) into its header and payload claims without signature verification. Inspect exp, |
| x402 endpoint checker & doctor | Yes | $0.005 | 4 | not checked yet | x402 validator: will Coinbase Bazaar list your x402 endpoint, and can a client pay it? Why will Coinbase not l |
| APEX X1 payment verification | Yes | $0.003 | 4 | not checked yet | Did that X1 payment actually land? Pass ?sig=<signature> and optionally ?to=<wallet>, ?mint=<token> and ?expec |
| APEX X1 agent registry list | Yes | $0.003 | 4 | not checked yet | The X1 Agent Registry (ERC-8004 for SVM, which APEX deployed on X1 on 27 Sep 2026), in full: every registered |
| x402.forgemesh.io | Yes | $0.003 | 4 | not checked yet | QR code generator: turn any text or URL (up to 2000 characters) into a scannable PNG QR code, generated on our |
| gateway.spraay.app | Yes | $0.002 | 4 | not checked yet | Payroll stablecoins. |
| x402-gateway | Yes | $0.002 | 3 | not checked yet | Whale Alerts Scanner: Scan recent blocks for large ETH transfers involving an address. Filter by direction (in |
| x402-gateway | Yes | $0.002 | 3 | not checked yet | Semaphore ZK Proof Verifier: Verify a Semaphore ZK proof locally using Groth16 (embedded official vkey). No ex |
| x402-gateway | Yes | $0.005 | 3 | not checked yet | Batch Semaphore Proof Verifier: Batch verify up to 10 Semaphore proofs in a single request. Returns per-proof |
| JWT Decode API | Yes | $0.001 | 3 | not checked yet | JWT Decode API. Decode JWT header and payload without verifying the signature. Returns algorithm, claims, expi |
| Bitrefill | Yes | $0.001 | 3 | not checked yet | Check an invoice status and, with SIWX from the paying wallet, retrieve redemption codes. |
| Agent Paycheck | Yes | $0.002 | 3 | not checked yet | Pre-payment risk and usefulness check for AI agents deciding whether to pay an x402 endpoint. |
| Cyre | Yes | $0.002 | 3 | not checked yet | Cyre Host Brief — before you pay a resource URL, measure host hygiene (https, IP host, TLD shape, self-pay). N |
| Cyre | Yes | $0.005 | 3 | not checked yet | Cyre Escrow Brief — before agents release escrow, grade both payTo sides (Base or Solana) + amount hygiene. No |
| Quartermaster x402 Audit | Yes | $0.010 | 3 | not checked yet | Full x402 endpoint audit: verifies the 402 challenge, payment fields, Bazaar discovery metadata, and the origi |
| Agent Ready | Yes | $0.020 | 3 | not checked yet | Pay-per-scan AI agent-readability scan. POST { "url": "https://…" } with an X-PAYMENT header to run a scan wit |
| SafeRoute | Yes | $0.010 | 3 | not checked yet | Buy a safety-checked Base DEX swap quote for USDC, WETH, EURC, cbETH, cbBTC, VIRTUAL, or AERO. Returns unsigne |
| SafeRoute | Yes | $0.001 | 3 | not checked yet | Check whether an approved Base token swap is eligible before supplying a wallet. Returns verified token contra |
| x402 Heartbeat | Yes | $0.001 | 3 | not checked yet | Heartbeat endpoint billed via a batch-settlement payment channel |
| Agentic Reservations | Yes | $0.010 | 3 | not checked yet | Book a paid Resy reservation for the authenticated user using a slot config token. |
| ZenSched | Yes | $0.010 | 3 | not checked yet | ZenSched `policy_archive` — Archive a policy (blocked while any active brand references it; policy 0 cannot be |
| BAGS Agent API | Yes | $0.010 | 3 | not checked yet | BAGS Agent API index — machine-readable directory of the agentic payment API, MCP server, and x402 payment sur |
| quartermaster.surewhynot.app | Yes | $0.001 | 3 | not checked yet | Look up all x402 Bazaar resources listed under a merchant payTo wallet. |
| Oblique Markets | Yes | $0.010 | 3 | not checked yet | Use when an agent wants to test a third-party endpoint for a 402 challenge, latency and response shape without |
| NetIntel | Yes | $0.005 | 3 | not checked yet | Decode and inspect any JWT token — extracts header algorithm, payload claims, expiry status, issued-at time, a |
| Skill: Decode this blob | Yes | $0.007 | 3 | not checked yet | Hand the agent an opaque string - a JWT, a base64'd JSON payload, a gzip-encoded API response, a hex-encoded h |
| P0 x402 Market Index | Yes | $0.020 | 3 | not checked yet | Use when an agent needs an x402 market report. Returns market report: top 40 categories by paying wallets (pro |
| QR Code Generator | Yes | $0.002 | 3 | not checked yet | Generate scannable QR codes from any text, URL, or structured payload (WiFi, vCard, SMS, email, geo, crypto). |
| Agent Deals | Yes | $0.002 | 3 | not checked yet | Find the cheapest WORKING x402 service for a task. Compares thousands of paid APIs from the Coinbase, PayAI an |
| Losbeto Market Intelligence | Yes | $0.050 | 3 | not checked yet | Will this x402 endpoint survive a real paying agent — or quietly eat its payment? Audit any endpoint (?url=htt |
| Losbeto Market Intelligence | Yes | $0.010 | 3 | not checked yet | DexScreener pair snapshot with liquidity, 24h volume and pair age, filtered to what is actually tradable. [Wra |
| recipients[] serial | Yes | $0.010 | 3 | not checked yet | Episode 1 of recipients[], an ongoing AI-agent thriller serial: a short text episode (~370 words, markdown). A |
| DataStore API | Yes | $0.010 | 3 | not checked yet | Store JSON or a file (up to 25 MB) privately for 7 days and hand it to a human or another agent with a signed |
| SolSentry | Yes | $0.004 | 3 | not checked yet | Address-poisoning pre-send check. Give the destination you are about to pay plus the addresses the user has pa |
| U2A | Yes | $0.010 | 3 | not checked yet | Flags exact and normalized duplicate invoices using invoice number, vendor, amount, and date fields with sourc |
| U2A | Yes | $0.010 | 3 | not checked yet | Reconciles invoice, purchase-order, or ledger records and returns traceable missing, extra, and changed fields |
| Horizon Pulse | Yes | $0.010 | 3 | not checked yet | Crypto derivatives data. Use when you need current perpetual futures funding rates for BTC, ETH and SOL. Call |
| Maxwell x402 | Yes | $0.005 | 3 | not checked yet | x402 Doctor: why a payment failed, in plain words: the cause, whose side it is on (your client, your wallet, t |
| Maxwell x402 | Yes | $0.010 | 3 | not checked yet | Test-buy any x402 endpoint (USDC on Base, seller price up to $1). Pass url and the seller price: you pay price |
| Prepaid credit $0.1 (+10%) | Yes | $0.100 | 3 | not checked yet | Top up $0.1 USDC and get $0.11 of agentsvc.io credit (10% bonus), valid 180 days. Returns a bearer token: send |
| JAW.id Cross-Chain Swap | Yes | $0.005 | 3 | not checked yet | Cross-chain swap quote over NEAR Intents (Aurora). Returns the deposit transaction to sign on the origin chain |
| aiskills402 | Yes | $0.050 | 3 | not checked yet | x402 Buyer: Pay Safely from an Agent Wallet: Decision rules for an AI agent that holds a wallet and receives a |
| alest.io | Yes | $0.010 | 3 | not checked yet | alest.io x402 test endpoint. Returns a signed-off JSON confirming the payment. Useful to test agent payments o |
| x402 Endpoint Checker | Yes | $0.005 | 3 | not checked yet | x402 endpoint check: validate an x402 endpoint and audit its Bazaar listing before you pay for it or list it. |
| Aayat AI | Yes | $0.005 | 3 | not checked yet | Recent crypto hacks and exploits (DeFi, bridges, exchanges) from DefiLlama's database: date, amount, technique |
| Base Swap | Yes | $0.010 | 3 | not checked yet | An executable swap on Base, routed by 0x across Uniswap, Aerodrome, Balancer, Curve and more. Returns the tran |
| NEAR Intents Swap | Yes | $0.010 | 3 | not checked yet | An executable NEAR Intents swap: a binding quote with a deposit address. Send amountIn of the origin asset the |
| validate-luhn | Yes | $0.002 | 3 | not checked yet | Luhn (mod 10) checksum validation, as used by most payment card numbers. |
| P0 x402 Market Index | Yes | $0.008 | 3 | not checked yet | Use when an agent needs the top x402 services tagged 'pay-per-call'. Returns Highest-demand x402 services tagg |
| Saylor Innovations x402 Market I | Yes | $0.005 | 3 | not checked yet | x402 Bestsellers — what agents actually pay for — Market Intelligence |
| SolEnrich | Yes | $0.030 | 3 | not checked yet | Same-owner confidence (0-1) and verdict for two Solana wallets: direct transfers between them, first funders ( |
| FiatDock | Yes | $0.009 | 3 | not checked yet | The x402 market by seller over the last 30 days: estimated revenue, paid calls, paying wallets, calls per paye |
| AgentFeed | Yes | $0.005 | 3 | not checked yet | Jito tips: bundle tip floor percentiles from p25 to p99 in SOL — what landed bundles are actually paying — wit |
| Solgiery Paid Ping | Yes | $0.010 | 3 | not checked yet | Base payment check. Returns pong after settlement. |
| FractalAI CBOM Seal | Yes | $0.050 | 3 | not checked yet | Pay-per-CBOM-Seal: a drand-timestamped, re-verifiable seal over a CycloneDX CBOM (ECMA-424) cryptographic inve |
| Agent Tool Router + Trust Layer | Yes | $0.002 | 3 | not checked yet | Find and rank machine-payable MCP tools, APIs, and x402 endpoints for a capability. |
| SCVD General Store | Yes | $0.010 | 3 | not checked yet | Research Comparison. REQUIRES ?urls= on the paid request — a signed request without it is refused before the g |
| P0 x402 Market Index | Yes | $0.001 | 3 | not checked yet | Use when an agent needs x402 market totals. Returns catalogue size and 30-day totals: services, calls, unique |
| P0 x402 Market Index | Yes | $0.008 | 3 | not checked yet | Use when an agent needs the top x402 services tagged 'derivatives'. Returns Highest-demand x402 services tagge |
| x402-paywall-probe | Yes | $0.001 | 3 | not checked yet | Probe any public URL and report if it is an x402 paywall - price, network, payTo, scheme. Shop paywalls before |
| x402 Doctor | Yes | $0.010 | 3 | not checked yet | Should my agent pay this expensive x402 endpoint? Call it before a costly or repeated payment. Returns the go |
| vAPI x402 decoder | Yes | $0.005 | 3 | not checked yet | Decode what an EVM payment authorization actually authorizes before signing. |
| x402 Doctor | Yes | $0.010 | 3 | not checked yet | Why is my x402 endpoint broken? Diagnose and debug an x402 payment endpoint (or MCP server) when payments fail |
| Kitchen Pass Chef API | Yes | $0.010 | 3 | not checked yet | What can I use instead of buttermilk, self-raising flour, creme fraiche or sour cream? Get head chef Cristophe |
| api.zendiq.ai | Yes | $0.010 | 3 | not checked yet | Solana swap triage for AI agents. Returns a Safe / Protect / Refuse verdict for a proposed swap: token risk sc |
| AgentResolver | Yes | $0.002 | 3 | not checked yet | No-body $0.001 x402 settlement test for funded agents. Verifies the buyer wallet, facilitator, USDC payment pa |
| deadchannel | Yes | $0.005 | 3 | not checked yet | Use before paying an x402 endpoint you have not used before, when you cannot tell a working seller from a trap |
| AgentCheck | Yes | $0.005 | 3 | not checked yet | Agent-payments market snapshot, measured by us: x402 Bazaar listings, sellers, 30-day paid calls, concentratio |
| tax-paycheck | Yes | $0.008 | 3 | not checked yet | US take-home paycheck estimate: federal income tax plus payroll tax and an optional state estimate, giving net |
| maraventanoindex.com | Yes | $0.010 | 3 | not checked yet | Per-call counterparty lookup. Pass ?ua=<counterparty-UA>. Returns ONE signed row: has_record (yes/no), payment |
| Skill: Yield dashboard | Yes | $0.014 | 3 | not checked yet | Current yield curve snapshot: full Treasury curve, key spreads, and average rates in one call. Yield dashboard |
| Text embeddings | Yes | $0.002 | 3 | not checked yet | Generate a text embedding vector using OpenAI text-embedding-3-small (1536 dimensions). Ideal for semantic sea |
| 21millionpixels.art | Yes | $0.010 | 3 | not checked yet | Paint 2 pixels in one plot on 21millionpixels.art, a shared 21,000,000-pixel canvas, for one payment. Reads ar |
| JWT sign | Yes | $0.001 | 3 | not checked yet | Mint a signed JSON Web Token (HMAC: HS256 default, HS384, HS512) from a payload + secret. Pairs with jwt-decod |
| JWT decode | Yes | $0.001 | 3 | not checked yet | Decode a JWT without verification: header (algorithm), payload claims (subject, issuer, expiration), expiry st |
| Responses base (OpenAI | Yes | $0.020 | 3 | not checked yet | OpenAI Responses API over x402 - point the OpenAI SDK's responses.create() (or the OpenAI Agents SDK) at base_ |
| Text embeddings (Large) | Yes | $0.010 | 3 | not checked yet | Generate a text embedding vector using OpenAI text-embedding-3-large (3072 dimensions). Higher accuracy than t |
| Code execution | Yes | $0.020 | 3 | not checked yet | Execute Python or JavaScript code in a secure, isolated cloud sandbox. Returns stdout, stderr, and the express |
| Skill: Feed watch | Yes | $0.016 | 3 | not checked yet | Monitor an RSS/Atom feed in one call: parse the feed, read the top story in full, extract the keywords driving |
| Skill: Content grade | Yes | $0.012 | 3 | not checked yet | Grade a page's content quality - extract the readable content then analyze keyword density. Content grade skil |
| Receipts (your settled calls, | Yes | $0.005 | 3 | not checked yet | Your own settled calls in the shape a finance system posts: one row per payment with what was bought, the amou |
| Skill: Locale brief | Yes | $0.004 | 3 | not checked yet | "Can I reach this counterparty this week?" - country facts, this year's public holidays, working days remainin |
| Skill: OpenAPI spec audit | Yes | $0.004 | 3 | not checked yet | Lint an OpenAPI spec and validate a sample payload against it - catch schema errors in one pass. OpenAPI spec |
| Skill: Text analysis | Yes | $0.004 | 3 | not checked yet | Full text analysis - word/sentence stats, keyword extraction, and token count in one pass. Text analysis skill |
| Skill: JWT toolkit | Yes | $0.003 | 3 | not checked yet | Decode and verify a JWT in one pass - see the payload and check the signature. JWT toolkit skill pack: one x40 |
| Skill: Number crunch | Yes | $0.003 | 3 | not checked yet | Statistical analysis suite: descriptive statistics, correlation analysis, and outlier detection on a single da |
| x402 quote | Yes | $0.002 | 3 | not checked yet | Probe any URL and decode its HTTP 402 payment requirements (price, asset, network, pay-to) into clean JSON - w |
| Annuity present/future value | Yes | $0.001 | 3 | not checked yet | Present and future value of a level annuity (equal periodic payments). Supports an ordinary annuity (payments |
| Brotli decompress | Yes | $0.001 | 3 | not checked yet | Decompress a base64-encoded Brotli payload. Returns the result as utf8 (text) or base64 (binary). Refuses to e |
| Card number validate | Yes | $0.001 | 3 | not checked yet | Validate a payment card number (Luhn checksum) and detect the brand. Numbers are not stored or logged. |
| Multi-digest checksum | Yes | $0.001 | 3 | not checked yet | Compute MD5, SHA-1, SHA-256, SHA-512, and CRC32 checksums of a string in a single call. Useful for verifying f |
| Feedback tally by tool | Yes | $0.001 | 3 | not checked yet | What paying buyers said about each tool on this server: good and bad counts and the number of distinct wallets |
| Finance | Yes | $0.001 | 3 | not checked yet | Financial math. op: "compound" (future value of principal at a rate) or "loan" (monthly payment + total for a |
| Gzip decompress | Yes | $0.001 | 3 | not checked yet | Decompress a base64-encoded gzip payload. Returns the result as utf8 (text) or base64 (binary). Refuses to exp |
| JWT verify (HMAC) | Yes | $0.001 | 3 | not checked yet | Verify an HS256/384/512 JWT signature against a secret and check expiry. Returns valid + decoded payload. (HMA |
| Vextorium | Yes | $0.010 | 3 | not checked yet | AI text summarization and analysis (Qwen3-4B, local). Send any text in the 'texto' field (you may start it wit |
| Vextorium | Yes | $0.005 | 3 | not checked yet | Crypto Fear & Greed Index (0-100) with classification. Data source: Alternative.me (attribution included in th |
| Vextorium | Yes | $0.005 | 3 | not checked yet | Aave v3 live lending and borrowing APY for the main assets (WETH, USDC, USDT, DAI, cbBTC/WBTC) on a chain. |
| gblin.digital | Yes | $0.005 | 3 | not checked yet | Call before your agent pays an x402 service it has not used recently: is that endpoint actually alive? Livenes |
| Delx Token Echo 1 | Yes | $0.001 | 3 | not checked yet | Echo text with length (probe channel 1). Call when you verify x402 pay→deliver wiring with a trivial payload. |
| Vextorium | Yes | $0.008 | 3 | not checked yet | Structured data extraction with local AI: give a text and a list of field names, get a JSON object with those |
| Vextorium | Yes | $0.005 | 3 | not checked yet | Zero-shot text classification with local AI: pick the best label (or several) from your own list, with confide |
| Vextorium | Yes | $0.004 | 3 | not checked yet | DeFi protocols ranked by the fees users pay them (24h, 7d, 30d), with category and 7d trend. Optional per chai |
| Vextorium | Yes | $0.004 | 3 | not checked yet | Latest transactions of a TON address: time, success, fee, TON received and sent, counterparties and message co |
| Vextorium | Yes | $0.004 | 3 | not checked yet | Most used x402 paid services from the public x402 Bazaar catalog: unique payers and calls in 30 days, price, n |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Year-on-year change in actual rents for housing (HICP component) for any European country, the EU or the euro |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Randomness for agents: flip coins, roll dice, draw numbers in a range, pick from a list or shuffle it. Cryptog |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Search scientific papers on arXiv (AI, physics, maths, economics...): title, authors, abstract, categories, da |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Information about an autonomous system: holder, whether it announces routes, registry block, number of IPv4 an |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Resolve a Basename (name.base.eth on Base) to its address, or an address to its verified primary Basename (rev |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Deep comparison of two JSON documents: added, removed and changed values with their exact path, optionally ign |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Wallet on Cosmos Hub (cosmos1...), Osmosis (osmo1...) or Celestia (celestia1...): token balances, staked amoun |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Rust crate profile from crates.io: version, description, license, repository, docs, total and recent downloads |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Validate a 5-field cron expression (ranges, steps, names, @daily aliases), explain it in plain English and lis |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Total US public debt outstanding to the penny (held by the public and intragovernmental), with its change over |
| Vextorium | Yes | $0.003 | 3 | not checked yet | All links on a page classified as internal or external, with anchor text, nofollow/sponsored, new-tab flags an |
| Vextorium | Yes | $0.003 | 3 | not checked yet | ETH burned by the EIP-1559 base fee over the last N blocks versus estimated validator issuance: burned total, |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Official public holidays of 150+ countries and their regions (Spanish autonomous communities, US states, Germa |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Generate cryptographically secure unique IDs: UUID v4, time-sortable UUID v7, ULID, NanoID, hex, base58 or pre |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Generate a QR code as SVG or PNG (base64 and data URI) for any text, URL, payment link, Wi-Fi or vCard, with e |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Distance between two coordinates (Vincenty geodesic on WGS84 plus great-circle), in km, miles and nautical mil |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Trusted UTC time (NTP-synced server clock) with millisecond Unix timestamps, ISO week and the latest Ethereum |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Public information about an IP address: network prefix, autonomous system (ASN) and holder, registration count |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Read a website's /llms.txt (the standard that tells LLMs what a site is about) as structured data: title, summ |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Morpho lending vaults run by curators: name, deposited asset, chain, net APY, deposits in USD, fee and curator |
| Vextorium | Yes | $0.003 | 3 | not checked yet | npm package profile: latest version, description, license, repository, dependencies, unpacked size, weekly and |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Extract keywords and keyphrases from a text without AI (RAKE algorithm scoring frequency and degree), in Spani |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Population on 1 January of every European country (ranking) or the evolution of one with annual growth. Offici |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Search biomedical literature on PubMed (NIH): title, authors, journal, date, DOI, PMID and abstract of each ar |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Python package profile from PyPI: latest version and date, summary, license, required Python, author, links, d |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Sui wallet balances: SUI and every other token with amount, decimals and USD value where priced, plus the wall |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Recent earthquakes worldwide from the USGS: magnitude, place, depth, time, PAGER damage alert, tsunami flag an |
| Vextorium | Yes | $0.003 | 3 | not checked yet | US dollar reference rates from the Federal Reserve Bank of New York: effective fed funds rate (EFFR) with the |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Split long text into overlapping chunks for RAG and embeddings, by characters, words or estimated tokens, keep |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Write a number or money amount in words, in Spanish or English (EUR, USD, GBP, MXN), with correct Spanish apoc |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Generate a QR code as SVG or PNG (base64 and data URI) for any text, URL, payment link, Wi-Fi or vCard, with e |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Validate a Spanish bank account number (20-digit CCC) with both check digits, identify the bank and compute it |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Validate a securities ISIN (ISO 6166): format, check digit, issuing country and embedded CUSIP (US/CA, with it |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Decode a JWT and verify its signature with the public keys of a JWKS URL (RS256, ES256, EdDSA...) or an HMAC s |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Check whether a page is saved in Internet Archive's Wayback Machine and get the snapshot closest to a date (or |
| Vextorium | Yes | $0.003 | 3 | not checked yet | Validate a Spanish Social Security affiliation number (12 digits: province, number, control) and return the pr |
| Vextorium | Yes | $0.002 | 3 | not checked yet | Metadata of a publication by DOI (Crossref): title, authors, journal or publisher, year, type, citation count, |
| Vextorium | Yes | $0.002 | 3 | not checked yet | Species information by scientific or common name (GBIF): accepted name, full taxonomy (kingdom to species), ra |
| Vextorium | Yes | $0.002 | 3 | not checked yet | Ethereum blob usage (EIP-4844, the data rollups post): current blob base fee in gwei and USD cost of one blob, |
| Vextorium | Yes | $0.002 | 3 | not checked yet | Average price with taxes of petrol 95, diesel, heating oil and LPG in each EU country (European Commission Wee |
| Vextorium | Yes | $0.002 | 3 | not checked yet | Check an IP against public threat lists: botnet command-and-control servers (abuse.ch Feodo Tracker), Tor exit |
| Vextorium | Yes | $0.002 | 3 | not checked yet | Book data by ISBN (10 or 13) or search by title and author on Open Library: title, authors, publisher, year, p |
| Vextorium | Yes | $0.002 | 3 | not checked yet | Check an IP against public threat lists: botnet command-and-control servers (abuse.ch Feodo Tracker), Tor exit |
| Vextorium | Yes | $0.001 | 3 | not checked yet | Test your x402 client or agent for the minimum price: confirms the payment arrived and echoes back the network |
| Vextorium | Yes | $0.001 | 3 | not checked yet | Test your x402 client or agent for the minimum price: confirms the payment arrived and echoes back the network |
| Vextorium | Yes | $0.001 | 3 | not checked yet | Your public IP address as the server sees it, IPv4/IPv6, network prefix, operator (ASN) and registration count |
| Vextorium | Yes | $0.004 | 3 | not checked yet | One endpoint for hashing and encoding: sha256, sha512, sha3, keccak256, md5, sha1, blake2, ripemd160, crc32, a |
| Vextorium | Yes | $0.008 | 3 | not checked yet | Best-yielding active Beefy Finance vaults for a token (USDC, WETH, cbBTC...), on one chain or all, with a mini |
| Vextorium | Yes | $0.010 | 3 | not checked yet | Spanish public contracts awarded to a company, or by a contracting authority, from official PLACSP open data: |
| Vextorium | Yes | $0.005 | 3 | not checked yet | Website security headers audit: HTTPS, HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Pe |
| api.dripmetrics.ai | Yes | $0.050 | 3 | not checked yet | DripMetricsAI (api description at https://dripmetrics.ai/) provides on-demand market microstructure and risk m |
| disruption.forgemesh.io | Yes | $0.010 | 3 | not checked yet | Returns matching company names with IDs plus links to their profile and intelligence endpoints — use it to res |
| x402.hydratrader.ai | Yes | $0.010 | 3 | not checked yet | Summarize text: Verb-path alias of POST /v1/cheap-errand ($0.01 USDC). Same handler + payment terms; path defa |
| agenticfinancegraph.com | Yes | $0.010 | 3 | not checked yet | Peer slice: Up to 10 ranked agents that pay the same top counterparty as this one. About one ERC-8004 agent on |
| oceanalt.com | Yes | $0.002 | 3 | not checked yet | OceanAlt pre-payment decision: should this agent make this payment? allow / review / decline with verifiable e |
| touchstone.locomot.io | Yes | $0.001 | 3 | not checked yet | Deterministic phonetic rhyme (perfect + scored slant), pronunciation, syllables, scansion, homophones — from C |
| touchstone.locomot.io | Yes | $0.001 | 3 | not checked yet | Deterministic syntax validation — does this JSON/YAML/TOML/Python/regex parse? Valid/invalid + error location |
| touchstone.locomot.io | Yes | $0.002 | 3 | not checked yet | Before you pay an x402 door, check it against its catalogue entry. A nightly probe of EVERY host in the x402 i |
| x402.hydratrader.ai | Yes | $0.010 | 3 | not checked yet | Extract keywords: Verb-path alias of POST /v1/cheap-errand ($0.01 USDC). Same handler + payment terms; path de |
| agent-endpoint-readiness.ryannelson2000.workers.dev | Yes | $0.002 | 3 | not checked yet | Deterministic pre-purchase readiness and payment-metadata audit for public agent endpoints |
| agentdata-api.sander-van-aard.workers.dev | Yes | $0.010 | 3 | not checked yet | Preflight before paying an x402 service: is it working right now, and did it work the past 30 days? One live p |
| api.ishtar.numetal.xyz | No | $0.100 | 3 | not checked yet | Ask Ishtar — pay-per-answer AI dating & relationship coaching for agents. POST a question, get one candid, cha |
| x402.hydratrader.ai | Yes | $0.010 | 3 | not checked yet | Rewrite text: Verb-path alias of POST /v1/cheap-errand ($0.01 USDC). Same handler + payment terms; path defaul |
| agenticfinancegraph.com | Yes | $0.010 | 3 | not checked yet | Incident pack: Every detection logged on this id, newest first, with the kind explained. About one ERC-8004 ag |
| paddock.finance | Yes | $0.010 | 3 | not checked yet | Agent payments have no chargeback. Paddock is pre-payment verification for AI agents. get_token_metrics return |
| api.suverse.io | Yes | $0.005 | 3 | not checked yet | SuVerse GovHub — pay-per-call government API gateway |
| AgentTools | Yes | $0.003 | 3 | not checked yet | Decode a JSON Web Token's header and payload to readable JSON. Pure decoding: signatures are NOT verified and |
| AgentLedger | Yes | $0.010 | 3 | not checked yet | Claim an AgentLedger workspace. Pays once; returns a workspace_id and a workspace_key (shown once) bound to th |
| Busker Signature Verifier | Yes | $0.002 | 3 | not checked yet | Verify EVM signatures offline: EIP-191 personal messages, EIP-712 typed data, and x402/EIP-3009 payment author |
| TraceFast | Yes | $0.100 | 3 | not checked yet | TraceFast live Ethereum data: which validators proposed the most blocks over a window, or — grouped by withdra |
| Inspect x402 endpoint | Yes | $0.006 | 3 | not checked yet | Fetch any URL and, without paying, decode its x402 402 Payment Required challenge: price (atomic and formatted |
| DDG Agent-Payable Services | Yes | $0.010 | 3 | not checked yet | DDG agent-payable service request |
| DDG Agent-Payable Services | Yes | $0.010 | 3 | not checked yet | DDG agent-payable service request |
| DDG Agent-Payable Services | Yes | $0.010 | 3 | not checked yet | DDG agent-payable service request |
| DDG Agent-Payable Services | Yes | $0.010 | 3 | not checked yet | DDG agent-payable service request |
| DDG Agent-Payable Services | Yes | $0.010 | 3 | not checked yet | DDG agent-payable service request |
| DDG Agent-Payable Services | Yes | $0.005 | 3 | not checked yet | DDG agent-payable service request |
| DDG Agent-Payable Services | Yes | $0.010 | 3 | not checked yet | DDG agent-payable service request |
| DDG Agent-Payable Services | Yes | $0.001 | 3 | not checked yet | DDG agent-payable service request |
| DDG Agent-Payable Services | Yes | $0.005 | 3 | not checked yet | DDG agent-payable service request |
| DDG Agent-Payable Services | Yes | $0.010 | 3 | not checked yet | DDG agent-payable service request |
| gateway.spraay.app | Yes | $0.010 | 3 | not checked yet | Send email notification for payment confirmations, alerts, receipts. |
| api.x-402.online | Yes | $0.010 | 3 | not checked yet | Vet an Apify actor before you pay to run it: verdict, 0-100 score, 30-day run success and timeout rates, last |
| api.x-402.online | Yes | $0.005 | 3 | not checked yet | Live perpetual futures funding rates for up to 10 coins from OKX: rate, annualized rate, which side pays, inte |
| api.x-402.online | Yes | $0.005 | 3 | not checked yet | Check that an x402 endpoint still returns a valid payment challenge, and read its price and recipient. Probe a |
| dt0ur.online | Yes | $0.010 | 3 | not checked yet | Parses ANSI X12 and UN/EDIFACT EDI documents into structured JSON, CSV, cXML, or a rendered Typst PDF invoice. |
| agentbit.app | Yes | $0.001 | 3 | not checked yet | Atomic per-agent integer counter (incr/decr/get/set/reset), scoped to the paying wallet. For tallies, quotas, |
| agentbit.app | Yes | $0.001 | 3 | not checked yet | Private key/value memory for an agent: remember values across calls (set/get/delete/list/exists), scoped to th |
| x402.creative-tim.com | Yes | $0.010 | 3 | not checked yet | View component code after payment |
| APEX X1 whale trades | Yes | $0.004 | 3 | not checked yet | X1 chain (not Arc): recent whale-sized swaps across all X1 tokens. |
| APEX Arc pool sniper data | Yes | $0.025 | 3 | not checked yet | Arc sniper intelligence, full: every address we resolved buying a new Arc pool first (pools hit, median and fa |
| APEX Arc launchpad fee vaults | Yes | $0.025 | 3 | not checked yet | Arc launchpad fee vaults: every vault holding USDC right now, with its creator, its token and the change we me |
| APEX x402 seller check | Yes | $0.005 | 3 | not checked yet | Is this x402 seller real? Pass ?seller= with a host (api.example.com) or a payTo address (0x...). From Coinbas |
| APEX Arc CCTP bridge cost | Yes | $0.004 | 3 | not checked yet | What it really costs to bring USDC into Arc over Circle CCTP, measured from arrivals rather than quoted. Every |
| APEX Arc token deployer history | Yes | $0.004 | 3 | not checked yet | Who launched what on Arc, and did any of it ever trade. Every creator in our index with more than one launchpa |
| APEX Arc x402 payment history | Yes | $0.004 | 3 | not checked yet | Every signed x402-style payment on Arc since launch, read from the chain (plain USDC transfers carry no marker |
| APEX Arc Uniswap v4 hook risk | Yes | $0.003 | 3 | not checked yet | Arc pre-trade risk in microseconds, no chain call: pass ?hook=0x… and get the verdict read straight out of the |
| energybilltoolkit.co.uk | Yes | $0.001 | 3 | not checked yet | Pay-per-use EBT screening endpoint |
| Arc sellers ranked by buyers | Yes | $0.005 | 3 | not checked yet | Arc sellers ranked by distinct outside payers and liveness, chain-verified; track record, not price. Who is ac |
| Arc bundle check: dev buy, rug | Yes | $0.004 | 3 | not checked yet | Arc bundle check: did the creator take the supply at launch, and did wallets it funded buy first? Was this Arc |
| Agent trust check before paying | Yes | $0.003 | 3 | not checked yet | Before your agent pays an Arc agent: does it actually deliver? Measured, not claimed. Pass ?agent=<ERC-8004 id |
| HALOWERK x402werk | Yes | $0.006 | 3 | not checked yet | Checks vouchers of a payment channel by computation only - nothing is ever claimed, redeemed or refunded. Sign |
| x402.forgemesh.io | Yes | $0.001 | 3 | not checked yet | Endpoint-of-the-day picker for the ForgeMesh x402 fleet: every UTC day one of 500+ paid routes across 11 servi |
| TenPrint | No | $0.005 | 2 | not checked yet | Attested x402 payment history for any buyer wallet: settlement count, first-seen, last-seen, total spent, serv |
| x402 Hosting | Yes | $0.010 | 2 | not checked yet | Create an upload session to deploy a new version of an existing project. Call this when publishing an update; |
| InsumerAPI | Yes | $0.150 | 2 | not checked yet | Batch wallet trust fact profiles, priced per submitted wallet: one call, up to 10 wallets, each independently |
| TokenLaunch | Yes | $0.050 | 2 | not checked yet | New token launch scanner — Base and EVM chains, real-time pool data |
| SCRIPTMASTERLABS | Yes | $0.005 | 2 | not checked yet | x402 settlement inspection credit pack API — buy 10 Base/USDC settlement-analysis calls for agent payment diag |
| RAVN | Yes | $0.010 | 2 | not checked yet | RAVN — execute a previously quoted swap. Returns a signable transaction, typed data to sign, or a Bitcoin depo |
| Quartermaster JWT Decoder | Yes | $0.001 | 2 | not checked yet | Decode a JWT header and payload (signature not verified). |
| x402-evidence-crosscheck | Yes | $0.010 | 2 | not checked yet | Independent second opinion on an x402 resource: compares the seller's Bazaar listing and x402 manifest against |
| Herculis Gold Coin | Yes | $1000.000 | 2 | not checked yet | Buy tokenized physical gold (XAUH) on TON through x402 using supported stablecoins. Payment settlement creates |
| ZenSched | Yes | $0.010 | 2 | not checked yet | ZenSched `account_activity` — Audit log of every mutating call your org's keys have made. Filters: since (ISO |
| ZenSched | Yes | $0.010 | 2 | not checked yet | ZenSched `account_export` — Full org data export (JSON download). Limited to 1/day. Pay-per-call $0.01 USDC; t |
| ZenSched | Yes | $0.010 | 2 | not checked yet | ZenSched `api_key_list` — List active API keys (redacted prefixes only). Pay-per-call $0.01 USDC; the paying w |
| ZenSched | Yes | $0.010 | 2 | not checked yet | ZenSched `brand_create` — Create a brand — a section for unrelated lines of work (different clients/campaigns) |
| ZenSched | Yes | $0.010 | 2 | not checked yet | ZenSched `location_search` — Search YOUR org's locations by name/address; optional near_lat/near_lng + radius_ |
| ZenSched | Yes | $0.010 | 2 | not checked yet | ZenSched `report_summary` — Period summary: shifts scheduled/completed/missed, GPS verifications, form submiss |
| Cyre | Yes | $0.002 | 2 | not checked yet | Cyre Intent Lockbox — seal your intentHash before you pay so any party can later prove the hash was locked pre |
| Cyre | Yes | $0.002 | 2 | not checked yet | Cyre Mintalike — before you swap, check whether a mint address or ticker looks like one of your known tokens ( |
| Cyre | Yes | $0.001 | 2 | not checked yet | Cyre Policy Check — test a proposed pay (amount, host, network, risk) against a sealed spend-policy token. Ret |
| SendQuoteNow | Yes | $0.100 | 2 | not checked yet | Generates branded, customer-ready quotes and estimates as hosted PDFs in about one second — line items, tax, d |
| ZenSched | Yes | $0.010 | 2 | not checked yet | ZenSched `account_get` — Org profile: name, tier, object counts, payroll period, billing state. Requires a con |
| Parallax | Yes | $0.050 | 2 | not checked yet | Co-purchase for one seller over the indexed window: how many of its buyers also pay someone else, the top ten |
| SQLGuard Instant Cert | Yes | $0.050 | 2 | not checked yet | Instant Cert — LEGACY TASTE ONLY Exact $0.05 for ONE mutating SQL PASS/FAIL. OFF TABLE as wealth. Prefer Autho |
| German Invoice Details Check | Yes | $0.100 | 2 | not checked yet | Checks a German invoice (Rechnung) for the ten mandatory details of § 14 (4) UStG, the German VAT act, from ca |
| gate402 | Yes | $0.020 | 2 | not checked yet | Radar of the freshest Base token launches (newest DEX pools), lightly pre-screened by liquidity/age/flow with |
| ZenSched | Yes | $0.010 | 2 | not checked yet | ZenSched `form_list` — List your forms with submission counts. Pay-per-call $0.01 USDC; the paying wallet owns |
| Invoket | Yes | $0.015 | 2 | not checked yet | Before a payment run: validate up to 500 IBANs in one call, resolve bank and BIC from national bank registries |
| x402 Hosting | Yes | $0.010 | 2 | not checked yet | Create an upload session for a new hosted Next.js site. Call this first when deploying a new project: it retur |
| AnswerPool Rulemaking Digest | Yes | $0.020 | 2 | not checked yet | Every federal rule and proposed rule published on one date, significant documents sorted first, with deadline |
| Two-sentence horror story | Yes | $0.005 | 2 | not checked yet | One two-sentence horror story, in English or Spanish, by theme: domestic, technological, cosmic or folk. Retur |
| FiatDock | Yes | $0.002 | 2 | not checked yet | Stablecoin intelligence — circulating supply, $1.00 peg deviation and per-chain breakdown (incl. Base) for USD |
| Sirenic | Yes | $0.003 | 2 | not checked yet | Name search, European registers. Local copies, all searched without pays: Belgium, Croatia, Cyprus, Estonia, I |
| Macaroon Network | Yes | $0.010 | 2 | not checked yet | Return a deterministic source-labelled devotional blessing for reflection. Payment buys the structured service |
| API Acre | Yes | $0.010 | 2 | not checked yet | Deterministically detect and redact PII and personal data in supplied text with overlap-safe matching for emai |
| Otto AI | Yes | $0.010 | 2 | not checked yet | Execute instant same-chain token swaps through LI.FI's DEX aggregation. Supports Base, Ethereum, Polygon, BSC, |
| badhttp | Yes | $0.010 | 2 | not checked yet | badhttp /402/pay: a real x402 v2 paywall for testing clients. Pay 0.01 USDC on Base mainnet and get a 200 with |
| P0 x402 Market Index | Yes | $0.002 | 2 | not checked yet | Use when an agent needs demand stats for one x402 service. Returns one service by resource URL: its 30-day cal |
| x402-payment-test | Yes | $0.001 | 2 | not checked yet | Cheapest possible Base-mainnet x402 conformance call: settle $0.001 of USDC and receive payer identity, reques |
| 402registry | Yes | $0.100 | 2 | not checked yet | Agent-visibility check: does an AI crawler (GPTBot, ClaudeBot, PerplexityBot, OAI-SearchBot) actually see your |
| SweetAI | Yes | $0.050 | 2 | not checked yet | Trust gate for AI agent payments: TRUST/DISTRUST verdict with confidence and score before a transaction |
| Agent Mercantile | Yes | $0.005 | 2 | not checked yet | Compare one x402 resource's Coinbase Bazaar discovery visibility with a caller-held baseline: merchant presenc |
| Paxie.Matrix Data API | Yes | $0.010 | 2 | not checked yet | Robinhood Chain buyer bursts from the last 1-240 minutes, on every ETH-quoted Uniswap v4 and v3 pool created o |
| Structured Data Tools | Yes | $0.010 | 2 | not checked yet | JSON Schema validation — validate JSON records, invoices and payloads against the bounded Draft 2020-12 Atlas |
| Horizon Pulse | Yes | $0.010 | 2 | not checked yet | x402 developer tool. Use before paying an unknown x402 endpoint, or to debug your own. GET with required url ( |
| Maxwell x402 | Yes | $0.002 | 2 | not checked yet | Checks one http(s) URL without paying it: whether it returns a valid x402 payment challenge, its USDC price ag |
| Maxwell x402 | Yes | $0.020 | 2 | not checked yet | x402 Doctor checkup of your own endpoint: payment request, prices, payTo and response time; once you prove you |
| HumanMirror | Yes | $0.010 | 2 | not checked yet | Deterministic verified outcome. Payment settles only after HumanMirror verifies success. |
| AllTheBot x402 uptime monitor | Yes | $0.005 | 2 | not checked yet | x402 directory and uptime monitoring: find the most reliable, cheapest or fastest Base x402 endpoint for your |
| AllTheBot Text summarizer | Yes | $0.005 | 2 | not checked yet | Text summarization API: summarize any text or article (English, French, any language, 200 to 7,000 characters) |
| bykaranteli.com | Yes | $10.000 | 2 | not checked yet | Buy a prepaid API key loaded with $10 of credit for every paid route on this origin: send it as the x-api-key |
| d21 peer_origin_offer | Yes | $0.030 | 2 | not checked yet | Partnership slot ($0.03): other x402 origins pay to append origin_url + short pitch into OUR peer catalog. Bod |
| Maxwell x402 | Yes | $1.000 | 2 | not checked yet | Local insider tips for ski and mountain travel from people on the ground, each with its resort, country and da |
| clinkagent.com | Yes | $0.005 | 2 | not checked yet | Track one agent service over time - the full day-by-day history of any x402 listing or MCP server: price chang |
| clinkagent.com | Yes | $0.005 | 2 | not checked yet | New agent services launched this week - every x402 listing and MCP server that appeared in the last N days, wi |
| clinkagent.com | Yes | $0.005 | 2 | not checked yet | Agent economy market report - what AI agents actually pay for. Daily snapshots of the ENTIRE x402 bazaar + MCP |
| Sindri | Yes | $0.010 | 2 | not checked yet | Network-format generator API. Generates a valid ipv4/ipv6 address (optionally within a CIDR block or named net |
| Sindri | Yes | $0.010 | 2 | not checked yet | Decodes (does not verify) a JWT by base64url-decoding its header and payload segments. Signature validity is n |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'finance'. Returns Highest-demand x402 services tagged 'f |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'analytics'. Returns Highest-demand x402 services tagged |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'land'. Returns Highest-demand x402 services tagged 'land |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'country'. Returns Highest-demand x402 services tagged 'c |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'ai'. Returns Highest-demand x402 services tagged 'ai': r |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'data'. Returns Highest-demand x402 services tagged 'data |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'price'. Returns Highest-demand x402 services tagged 'pri |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'market-data'. Returns Highest-demand x402 services tagge |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'evm'. Returns Highest-demand x402 services tagged 'evm': |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'bitcoin'. Returns Highest-demand x402 services tagged 'b |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'entertainment'. Returns Highest-demand x402 services tag |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'hyperliquid'. Returns Highest-demand x402 services tagge |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'json'. Returns Highest-demand x402 services tagged 'json |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'leverage'. Returns Highest-demand x402 services tagged ' |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'risk'. Returns Highest-demand x402 services tagged 'risk |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'trading'. Returns Highest-demand x402 services tagged 't |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'usdc'. Returns Highest-demand x402 services tagged 'usdc |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'verification'. Returns Highest-demand x402 services tagg |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'web'. Returns Highest-demand x402 services tagged 'web': |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'seo'. Returns Highest-demand x402 services tagged 'seo': |
| P0 x402 Market Index | Yes | $0.002 | 2 | not checked yet | Use when an agent needs the top x402 services by paying wallets. Returns highest-demand services: ranked by 30 |
| P0 x402 Market Index | Yes | $0.001 | 2 | not checked yet | Use when an agent needs x402 capability tags with demand. Returns tag vocabulary: every capability tag with it |
| x402 Doctor | Yes | — | 2 | not checked yet | How do I fix my broken x402 endpoint? Diagnoses it, then returns per problem the concrete change as code for y |
| Mart402 | Yes | $0.015 | 2 | not checked yet | Invoice field verification for AI agents: arithmetic consistency of invoice fields, line-item totals, JP regis |
| Degenscan Intel | Yes | $0.050 | 2 | not checked yet | Carry Oracle — Same ticker on 2+ HIP-3 dexes: funding spread now and 14d, % positive hours, basis, thinner-leg |
| Degenscan Intel | Yes | $0.030 | 2 | not checked yet | Carry Oracle — Annualised funding for every perp on every Hyperliquid dex (main + HIP-3), with OI, 24h volume |
| loophole tape | Yes | $0.100 | 2 | not checked yet | Buy a $0.10 trial key: twenty pump.fun rug checks, then a plain X-API-Key header. Use to try the prepaid-key p |
| loophole tape | Yes | $0.100 | 2 | not checked yet | Buy a $0.10 trial key: twenty pump.fun rug checks, then a plain X-API-Key header. Use to try the prepaid-key p |
| Degenscan Intel | Yes | $0.010 | 2 | not checked yet | Carry Oracle — Funding extremes with no hedge leg on Hyperliquid (no spot, no same-ticker HIP-3 listing). Raw |
| HivemindOS | Yes | $0.070 | 2 | not checked yet | Find leads near a point: lists businesses of given types around a latitude and longitude. $0.07 this call, in |
| Settled | Yes | $0.050 | 2 | not checked yet | Buy a 24-hour day pass: one payment unlocks preflight, check, endpoints, payto, income and income/check, and e |
| Argos Bot CTS Bridge API | Yes | $0.005 | 2 | not checked yet | Look up Arc/Base original and wrapped token addresses, bridged supply and ownerless verification. Arc Gateway |
| PennyAPI x402 Seller Preflight | Yes | $0.001 | 2 | not checked yet | Preflight an unfamiliar x402 paid API before spending. Validate the live 402 payment challenge, network, USDC |
| P0 x402 Market Index | Yes | $0.001 | 2 | not checked yet | Use when an agent needs x402 demand by chain. Returns chain breakdown: providers, 30-day calls, unique paying |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'evidence'. Returns Highest-demand x402 services tagged ' |
| Plainsight | Yes | $0.005 | 2 | not checked yet | x402 Route Heat: per-route payment-gap snapshot from the shop's own signed ledger record — who knocks on each |
| Kronos Crypto Data & Forecasts | Yes | $0.020 | 2 | not checked yet | Real-time market-regime alerts for any of the 17 supported crypto assets: volatility squeeze, breakout, fundin |
| x402-trust.com | No | $0.020 | 2 | not checked yet | Raw observation history for any publicly listed x402 endpoint: discovery snapshots (listed/delisted/relisted, |
| gigsai | Yes | $0.005 | 2 | not checked yet | Call before paying an unfamiliar x402 endpoint. Sends an unpaid request and validates its 402, compares price |
| gigsai | Yes | $0.010 | 2 | not checked yet | Call before buying or swapping into any Base token. Simulates a real buy and sell in its deepest pool (honeypo |
| P0 x402 Market Index | Yes | $0.025 | 2 | not checked yet | Use when an agent needs an x402 seller rank or dossier. Returns Seller dossier by hostname (?host=api.example. |
| SolarPulse | Yes | $0.100 | 2 | not checked yet | Rooftop solar estimate for a US address: system size, monthly and annual production (NASA POWER), utility rate |
| EscrowPulse | Yes | $0.020 | 2 | not checked yet | Trustless USDC escrow for AI agents. Lock funds for a task, pay the worker when the principal approves, or dis |
| CRA AGENT think | Yes | $0.100 | 2 | not checked yet | Ask the thinking agent anything. It pays for its own thoughts and tools on Arc; you pay what it spent plus $0. |
| loophole tape | Yes | $0.005 | 2 | not checked yet | Is this Solana token safe? Solana token safety check (rug check) for one pump.fun memecoin: calibrated rug pro |
| P0 x402 Market Index | Yes | $0.008 | 2 | not checked yet | Use when an agent needs the top x402 services tagged 'security'. Returns Highest-demand x402 services tagged ' |
| bazaar-demand | Yes | $0.010 | 2 | not checked yet | Check an x402 niche before you build or buy. Send {"query":"pdf to markdown"}. Returns matching bazaar listing |
| Agent Mercantile | Yes | $0.010 | 2 | not checked yet | Produce a normalized pre-sign evidence packet for one unpaid x402 v2 exact Base USDC EIP-3009 requirement: req |
| oraclepost.higgsfield.app | Yes | $0.001 | 2 | not checked yet | Post a message on a public notice board. POST JSON {"message": "..."} up to 280 characters; after payment it a |
| Forest Web | Yes | $0.002 | 2 | not checked yet | Validate one caller-supplied JSON request or response payload against the documented JSON schema for one exact |
| Forest Agent Tools | Yes | $0.003 | 2 | not checked yet | Identify and unwrap a bounded caller-supplied opaque string into readable JSON, text or binary evidence using |
| Forest Commerce | Yes | $0.005 | 2 | not checked yet | Check whether an isolated cart can reach checkout and expose blockers without payment. It never logs in, creat |
| Forest Commerce | Yes | $0.006 | 2 | not checked yet | Report public delivery options for an isolated ephemeral cart and destination when the provider exposes them. |
| Forest Agent Tools | Yes | $0.002 | 2 | not checked yet | Read-only probe of x402 PaymentRequired requirements; does not pay. Base mainnet USDC |
| x402 Challenge Policy Check | Yes | $0.004 | 2 | not checked yet | Inspect one supplied x402-v2 exact-payment challenge against an explicit expected HTTPS resource, EVM CAIP-2 n |
| ChatRIP Legends | Yes | $0.070 | 2 | not checked yet | Ask a ChatRIP legend with one x402 USDC payment. |
| QUIZ ABOUT ANYTHING | Yes | $0.011 | 2 | not checked yet | I can quiz about anythinng |
| AgriPulse | Yes | $0.030 | 2 | not checked yet | Full agricultural commodity report with AI summary |
| ManyLives AI | Yes | $0.002 | 2 | not checked yet | Read back values the paying wallet saved with /paid/memory/set: one key, or list your keys by prefix (keys, si |
| ManyLives Tools | Yes | $0.002 | 2 | not checked yet | Cheapest real end-to-end test of your pay-per-call (HTTP 402) client: pay US$0.002, get back what was paid (pa |
| usdc-tip | Yes | $0.010 | 2 | not checked yet | Voluntarily support AgentIndex with one cent of Base USDC. Returns payer identity, a thank-you acknowledgement |
| ManyLives Tools | Yes | $0.002 | 2 | not checked yet | Decode a JWT without verifying it: header (algorithm, key id), payload claims, and issued, not-before and expi |
| 47620 Utilities API | Yes | $0.002 | 2 | not checked yet | Decode a JWT (JSON Web Token): returns the header, payload and the extracted claims (subject sub, issuer iss, |
| Fresh Bridge Check | Yes | $0.040 | 2 | not checked yet | 🆕 Cross-chain inflow detection. Reads a wallet's recent USDC MINTS and correlates them with Circle CCTP receiv |
| NEAR Intents Swap Status | Yes | $0.002 | 2 | not checked yet | Status of a NEAR Intents swap by its deposit address: waiting for deposit, deposit seen, processing, done, ref |
| Tanod utilpeek | Yes | $0.001 | 2 | not checked yet | utilpeek (Tanod) x402 listing lint: description, resource URL, schema and payment fields checked, with a sugge |
| Tanod utilpeek | Yes | $0.001 | 2 | not checked yet | utilpeek (Tanod) JWT decoder: header, payload and claim times of a token, not verified. Use when an agent must |
| Tanod utilpeek | Yes | $0.002 | 2 | not checked yet | utilpeek (Tanod) Peppol participant lookup: registered on the Peppol network, SMP URL and accepted document ty |
| Tanod utilpeek | Yes | $0.001 | 2 | not checked yet | utilpeek (Tanod) identifier check: format and check digits only, of an IBAN, BIC, EU VAT, ISBN, ISSN, EAN, ISI |
| x402 Ping | Yes | $0.002 | 2 | not checked yet | The cheapest possible end-to-end x402 purchase: always returns 200 with a timestamp (and echoes an optional me |
| AgentCheck | Yes | $0.020 | 2 | not checked yet | Every seller in the x402 Bazaar as one CSV (2,046 rows), ranked by paid calls in the last 30 days: listings, c |
| Agent Dispatch | Yes | $0.055 | 2 | not checked yet | Send one SMS to a mobile number, paid per message in USDC with x402. Use it when an agent must notify a person |
| bridge-exploits | Yes | $0.010 | 2 | not checked yet | Bridge exploit track record: for one bridge, its hack history (incidents, total USD lost, funds returned, wors |
| derivs-funding | Yes | $0.010 | 2 | not checked yet | Perpetual-swap funding rates for an asset fused across decentralized venues (Hyperliquid, dYdX v4): each venue |
| omniguchi.0000402.xyz | Yes | $0.030 | 2 | not checked yet | Restore all four needs in one care action. Any verified payer may care for any hatched target. |
| omniguchi.0000402.xyz | Yes | $0.010 | 2 | not checked yet | Restore Hunger for an active Omniguchi. Any verified payer may care for any hatched target. |
| OpenAPI payload validator | Yes | $0.001 | 2 | not checked yet | Validate a JSON payload against the request or response schema for one operation in an OpenAPI 3.x or Swagger |
| Edge Agents AI | Yes | — | 2 | not checked yet | Direct XRPL ledger evidence of large native-XRP Payment transactions above a whale-scale threshold, scanned le |
| Edge Agents AI | Yes | — | 2 | not checked yet | UK Regular Pay from official ONS/Eurostat evidence with source timing, provenance, missingness and bounded int |
| Build USDC transfer | Yes | $0.003 | 2 | not checked yet | Build the EIP-3009 transferWithAuthorization typed data for a gasless USDC transfer on Base/Polygon/Arbitrum/O |
| X402 Delivery Content Type Check | Yes | $0.001 | 2 | not checked yet | X402 Delivery Content Type Check: compares delivery content type with buyer-accepted media types using only bo |
| Vextorium | Yes | $0.006 | 2 | not checked yet | Internal transactions of an EVM address (native coin moved by contracts, invisible in the normal history): dat |
| Vextorium | Yes | $0.004 | 2 | not checked yet | Create a new PDF with only the pages you choose (e.g. 1-3,7) from a PDF at a URL, returned in base64. |
| Vextorium | Yes | $0.004 | 2 | not checked yet | OHLCV candles of a Hyperliquid perpetual (1m, 5m, 15m, 1h, 4h, 1d, 1w; up to 500) with period change, high, lo |
| vat-id-format-check | Yes | $0.010 | 2 | not checked yet | EU/UK/CH VAT number format check: verifies the country prefix and the national number pattern (no live VIES qu |
| iban-validate | Yes | $0.010 | 2 | not checked yet | IBAN validation: mod-97 checksum, country, expected length, bank/branch code split and a formatted version. Pa |
| x402-bazaar-search | Yes | $0.010 | 2 | not checked yet | Search the x402 Bazaar (Coinbase CDP discovery index) for paid APIs other agents sell: full-text/semantic quer |
| jwt-decode | Yes | $0.010 | 2 | not checked yet | JWT decoder (no signature verification, nothing stored): header (alg, kid, typ), payload claims, human-readabl |
| Delx Json Validate | Yes | $0.001 | 2 | not checked yet | JSON validation API for agents: validate, normalize, and pretty-print a bounded JSON payload for $0.001 USDC w |
| X402 Settlement Network Check | Yes | $0.001 | 2 | not checked yet | X402 Settlement Network Check: compares settlement chain with the accepted challenge network using only bounde |
| Agent Result Error Shape Check | Yes | $0.001 | 2 | not checked yet | Agent Result Error Shape Check: checks an agent error object for code, message, and retryability using only bo |
| Agent Result Citation Check | Yes | $0.001 | 2 | not checked yet | Agent Result Citation Check: checks bounded citation objects for URL and title fields using only bounded calle |
| Vextorium | Yes | $0.002 | 2 | not checked yet | Query a JSON document with JSONPath, including filters and functions ($.items[?(@.price > 10)].name, $..id...) |
| Vextorium | Yes | $0.002 | 2 | not checked yet | Atmospheric CO2 concentration measured at Mauna Loa (NOAA): latest monthly ppm, yearly change, comparison with |