Check whether a smart contract's source code is verified on the block explorer, with contract name, compiler andGET /chain/contract-verify · x402 API by x402node
Check whether a smart contract's source code is verified on the block explorer, with contract name, compiler and proxy status across Ethereum/Base/Arbitrum/Optimism/Polygon/BSC - a pre-interaction safety check agents need that LLMs cannot perform live. contract verified, source code verified, contract audit, unverified contract, contract safety, is contract safe
What does this x402 API do?
Check whether a smart contract's source code is verified on the block explorer, with contract name, compiler and. This is an x402-gated GET API resource from x402node. TOLL·402 confirmed a protocol-valid HTTP 402 quote on 2026-07-21. No normalized USD price is recorded; the listing names Base and Solana. No settled paid call has been verified.
- Published price
- No normalized USD price is recorded
- Networks
- Base · Solana
- Latest evidence
- TOLL·402 confirmed a protocol-valid HTTP 402 quote on 2026-07-21
- Resource ID
- c2b2ef3b150521c77d0fffbf
Start with a quote-only recipe. Payment signing stays in your project.
const response = await fetch("https://api.x402node.dev/chain/contract-verify", {
method: "GET",
});
console.log(response.status);
console.log(Object.fromEntries(response.headers));
console.log((await response.text()).slice(0, 1000));
// A valid 402 is a quote, not a completed paid call.This sends no payment. Inspect the 402 response before adding a wallet-enabled client.
- Live 402 quote confirmed
GET returned a protocol-valid 402 quote (402). No payment was made.
- Origin reachable
HEAD https://api.x402node.dev/ returned 404.
- Observed in cdp-bazaar
The registry record was observed and retained with provenance.
- Observed in 402-index
Discovered through bazaar.
- Registry record checked
Registry health: healthy.
What evidence supports this listing?
Each record has an exact-route quote outcome. Unresolved templates and potentially mutating methods are labeled instead of being invoked without provider-specific test input. A quote is still separate from a settled paid call. Read the discovery and verification methodology →
Which networks and payment options does it accept?
The normalized listing price is No normalized USD price is recorded. Raw protocol requirements remain visible below for implementation and audit use.