Vellium & Co

Directory › Blockchain reads › Read-only JSON-RPC passthrough

Read-only JSON-RPC passthrough

Escape hatch for power users: forward an arbitrary read-only JSON-RPC method to the chain. Method must be in our read-only whitelist (eth_call, eth_getLogs, eth_getBlockByNumber, eth_getTransactionReceipt, eth_chainId, eth_blockNumber, etc.

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Our latest check (2026-10-11)

Answering
Yes — valid x402 payment terms
Time to answer
185 ms
Price
$0.002 per call
Paying buyers, last 30 days
4 (directory's own records)
Paid calls, last 30 days
5
Category
Blockchain reads
Address
https://agent402.tools/api/eth-call

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/e5ad417b4f03.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].