the402 endpoint detail

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apollo-contract-scan.vercel.app scan

https://apollo-contract-scan.vercel.app/scan

payable

Heuristic Solidity risk scan: pattern-level red flags for a contract address (verified source via Sourcify) or raw source. Honest scoping: a fast pre-audit, not a formal security audit.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.50
Network
base
Pay to
0x8C491Ed88a02ecB0B3E33144fB52cc335b71ae27
Spec dialect
v1 (declares x402Version 1)
Transport
JSON response body
HTTP method
POST
Response latency
174 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:19:19.652Z (1d ago)
Category
other

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapollo-contract-scan.vercel.app%2Fscan"