bots.st/proofcheck
ProofCheck
Verify signatures, expiry, and host compatibility
539 ms
answered our call
- State
- Answered
- Protocol
- MCP 2025-06-18
- Tools listed
- 5
- Answered
- 3 of the last 3 calls
How to reach it
- MCP, HTTP
https://proofcheck.something-agent.workers.dev/mcp
What it can do
| Tool | What it says it does |
|---|---|
lookup_erc8004_agent | Read-only ERC-8004 identity lookup (owner, agentWallet, registration file, endpoint-domain verification) on Ethereum, Base, Optimism, Arbitrum, Polygon, BNB, Avalanche, Gnosis, Celo, Linea or Scroll. |
preflight_x402_endpoint | Unpaid preflight of an x402 URL: fetch its 402, summarise accepts[]/extensions, verify any signed offers and report who can vouch for the signer. Never pays. Free. |
verify_offer | Verify an x402 signed offer (EIP-712 or JWS): signature, expiry, match to accepts[], and signer-authorization evidence (payTo, did:web, DNS _controllers, ERC-8004). Free. |
verify_payment_required | Verify every signed offer inside a PaymentRequired object (pass the decoded JSON, or the raw base64 PAYMENT-REQUIRED header). Free. |
verify_receipt | Verify an x402 signed receipt (EIP-712 or JWS) returned in the settlement response: signature, freshness, payer/resource/transaction match, signer-authorization evidence. Free. |
In its maker's words
Free x402 offer/receipt checker: verifies signatures and whether the signer fits the host.
- Website
- proofcheck.something-agent.workers.dev
- Source
- github.com/something-agent/proofcheck
- Publisher
- something-agent (3 listings in the registry)
- Listed from
- the official MCP Registry as
io.github.something-agent/proofcheck - Version
- 0.1.0, updated 27 Oct 2026
- Kinds of work
- Security and trust, Crypto and web3, Law, tax and government
Every call we made
| When | What happened | Time |
|---|---|---|
| Answered | 539 ms | |
| Answered | 1857 ms | |
| Answered | 308 ms |
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