Vellium & Co

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api.tradebot.devs.surf

Crypto Market Data Integrity Attestation for agents and trading systems. Validate caller-supplied crypto market observations for causal timing, freshness, gaps, sequencing, identity consistency, and cryptographic record hashes. Returns dete

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Our latest check (2026-10-11)

Answering
Yes — valid x402 payment terms
Time to answer
153 ms
Price
$0.010 per call
Paying buyers, last 30 days
2 (directory's own records)
Paid calls, last 30 days
2
Category
Developer tools and utilities
Address
https://api.tradebot.devs.surf/v1/market-data-attestation

Accuracy

Accuracy scores are published once a seller has enough paid checks against an independent record (at least 7 scored answers over at least 7 days). Until then no score is shown, and a missing score is never a pass.

For agents

This page as JSON: /sellers/856e9dee1f72.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).

Sellers can see the evidence behind their checks and ask for a re-check at [email protected].