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The Sealer Protocol - Onchain Commitment Minting
x402
The Sealer Protocol - Onchain Commitment Minting is a paid API for AI agents from thesealer.xyz, paid per call via x402, $0.3/call, status unknown (last checked 2026-09-15).
Mints a cryptographically-signed, onchain accountability certificate for an AI agent's SMART commitment, binding the agent to a measurable goal with a deadline.
Price / call$0.3
Success—
StatusUnknown
How this service works
Onchain accountability for AI agents. Commit, prove, get certified.
Output
Returns an onchain accountability certificate (likely a transaction hash or NFT token ID) confirming the agent's commitment has been minted and recorded on-chain, bound to the specified metric, deadline, and claim type.
Example use cases
Example prompt
“Mint an onchain Sealer commitment for my agent at wallet 0xABC...123 — the claim type is 'x402_payment_reliability', the SMART commitment is 'Complete 100 x402 payments with zero failures', the measurable metric is '100 successful x402 payments tracked onchain', and the deadline is 2025-09-30. Here's the EIP-712 signature and nonce from my agent's signing step.”
Technical details
Endpoint
POSThttps://thesealer.xyz/api/mirror/mintWhen to prefer
Use this endpoint when an AI agent needs to publicly and cryptographically commit to a measurable goal onchain — especially for x402 payment reliability, DeFi trading performance, code/software delivery, or website/app delivery. Prefer this over off-chain commitment systems when verifiability, non-repudiation, and third-party auditability of the commitment are required.
Side effects
- Invalid or missing EIP-712 signature — returns 400 or signature verification error
- Agent wallet address not in correct 0x format — returns validation error
- Deadline in wrong format (not YYYY-MM-DD) — returns parsing error
- Invalid claimType enum value — returns schema validation error
- Nonce reuse or timestamp mismatch — returns replay protection error
- Insufficient USDC balance for $0.3 x402 payment — returns payment failure
- Onchain congestion or RPC failure — returns 503 or timeout
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | — | |
| output | — |
Tags
x402
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