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ERC-8004 On-Chain Agent Registration Verifier
x402
ERC-8004 On-Chain Agent Registration Verifier is a paid API for AI agents from ai-policy-kit.moneymaker-ai.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-19).
Verifies an on-chain ERC-8004 agent registration by checking that the agent's wallet and metadata match the on-chain record for a given agentId and chain.
Price / call$0.01
Success—
StatusUnknown
How this service works
Generate an AI_POLICY.md and a pull request template with an AI-disclosure section for your open-source repo. Free, runs in your browser.
Output
Returns a JSON object containing the chain, block number, agentId, owner address, agentWallet address, tokenURI, a fetched registration file with its SHA256 hash, and an array of named checks each with a pass/fail result indicating whether on-chain data matches the registration file.
Example use cases
Audit agent identity before integration
“Before I integrate this third-party AI agent into my pipeline, can you check if agent ID 99821 on Base has a valid ERC-8004 registration and that its wallet matches the on-chain record?”
Pin verification to a specific block
“Verify agent ID 512044 on Ethereum at block 19800000 — I need to confirm what its registration looked like at that exact block height.”
Check agent registration on Polygon
“Can you look up the on-chain registration for agent 204771 on Polygon and tell me who the owner is, what the token URI points to, and whether all the checks pass?”
Technical details
Endpoint
GEThttps://ai-policy-kit.moneymaker-ai.workers.dev/api/erc8004-agent?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to cryptographically verify that an AI agent's on-chain ERC-8004 registration is legitimate and internally consistent — specifically when the agentWallet address, token URI, and registration file SHA256 must all agree with what is stored on-chain. Prefer this over manual RPC calls when you want a structured, multi-check summary across supported EVM chains without writing custom blockchain queries.
Side effects
- Invalid or non-existent agentId returns an error or empty result
- Unsupported chain value returns a validation error
- Block number too far in the past may exceed RPC archive depth
- Network timeouts from blockchain RPC nodes
- Registration file URL unreachable causes fetched:false in response
- Mismatch between agentWallet and on-chain value causes check pass:false
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"block": 128343930,
"chain": "bsc",
"owner": "0x7C34…359f",
"checks": [
{
"pass": true,
"check": "registration file agentWallet == on-chain getAgentWallet"
}
],
"agentId": "364913",
"tokenURI": "https://…/agent-registration.json",
"agentWallet": "0x7C34…359f",
"registration_file": {
"sha256": "9e3153ed…",
"fetched": true
}
}
}Tags
x402
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