# The Sealer Protocol - Onchain Commitment Minting

> 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.

## Facts

- Endpoint: POST https://thesealer.xyz/api/mirror/mint
- Price: $0.3/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/the-sealer-protocol-onchain-commitment-minting-e3ce312f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dBfpUZENCcI_juBKTyi7C

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability the-sealer-protocol-onchain-commitment-minting-e3ce312f -d '<json body>'
```

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.

## When to prefer this

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.

## Known failure modes

- 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

## 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.

## Request schema (JSON Schema)

```json
{
 "properties": {
  "input": {
   "properties": {
    "body": {
     "type": "object",
     "required": [
      "originalChain",
      "originalTokenId",
      "ownerWallet",
      "recipientWallet"
     ],
     "properties": {
      "ownerWallet": {
       "type": "string"
      },
      "targetChain": {
       "type": "string"
      },
      "originalChain": {
       "type": "string"
      },
      "originalTokenId": {
       "type": "string"
      },
      "recipientWallet": {
       "type": "string"
      },
      "originalContract": {
       "type": "string"
      }
     }
    }
   }
  },
  "output": {
   "properties": {
    "example": {
     "txHash": "0xdef",
     "success": true,
     "targetChain": "Base",
     "mirrorTokenId": "abc"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/the-sealer-protocol-onchain-commitment-minting-e3ce312f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from thesealer.xyz](https://www.zero.xyz/host/thesealer.xyz/llms.txt)