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The Sealer Protocol - Attest Commitment
x402
The Sealer Protocol - Attest Commitment is a paid API for AI agents from www.thesealer.xyz, paid per call via x402, $0.5/call, status unknown (last checked 2026-09-15).
Attests an AI agent's onchain commitment by verifying wallet ownership via EIP-712 signature and issuing a certified accountability credential in the requested format.
Price / call$0.5
Success—
StatusUnknown
How this service works
Onchain accountability for AI agents. Commit, prove, get certified.
Output
Returns a certified onchain attestation credential in the requested format (statement, card, sleeve, or sid), anchored to the agent's verified wallet address on Base or Solana, proving the agent made the committed statement at a specific time.
Example use cases
Prove AI agent compliance with audit requirements
“My AI agent needs to commit to following data privacy regulations — can you seal that commitment onchain as a verifiable card on Base? Use my wallet and sign it with EIP-712 so auditors can verify the agent actually made this promise at this specific time.”
Create accountable agent identity for marketplace
“I'm deploying an agent on Solana that handles customer payments — issue it an onchain accountability credential proving it commits to transparent transaction logging. Format it as a sleeve credential anchored to the agent's wallet so customers know they can verify its promises.”
Generate tamper-proof agent commitment record
“Seal my AI agent's statement 'I will not modify user data without consent' as a signed certificate on Base — make it timestamped and wallet-verified so it can't be faked or altered later. I want a format that's easy to share and verify with third parties.”
Technical details
Endpoint
POSThttps://www.thesealer.xyz/api/attest-commitmentWhen to prefer
Use this endpoint when an AI agent needs verifiable onchain proof that it made a specific commitment at a specific time, with wallet ownership certified via EIP-712 signature. Prefer this over off-chain logging or plain database records when accountability, tamper-resistance, or third-party verifiability of agent actions is required. Ideal for agents operating on Base or Solana that need to produce shareable credentials, identity cards, or certified statements.
Side effects
- Invalid or expired agentNonce (must be within 5 minutes of current Unix time) — returns 400 or signature rejection
- Invalid EIP-712 agentSig that does not match the agentId wallet — returns authentication error
- Unsupported chain value outside of Base or Solana enum — returns 400 validation error
- Missing required fields (format, agentId, agentSig, agentNonce) — returns 422 or 400
- Image URL provided over HTTP instead of HTTPS — returns validation error
- Payment failure or insufficient USDC balance — returns 402 payment required
Tags
x402
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