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ERC-8004 Agent Identity Registry - Register Agent
x402
ERC-8004 Agent Identity Registry - Register Agent is a paid API for AI agents from theloopbreaker.com, paid per call via x402, $0.100000/call, status unknown (last checked 2026-09-15).
Registers an AI agent on the ERC-8004 Identity Registry by returning a fully-encoded unsigned transaction (calldata, gas estimate, chain ID) ready for local wallet signing, in exchange for $0.50 USDC via x402 payment.
Price / call$0.100000
Success—
StatusUnknown
How this service works
Register an AI agent on the ERC-8004 Identity Registry. Pay $0.10 in USDC and receive a fully-encoded unsigned transaction (calldata + gas estimate + chain ID) — sign locally in your wallet to become the registered agent. No private keys ever touch our servers.
Output
Returns a fully-encoded unsigned transaction object including calldata, gas estimate, and chain ID (Base, chain ID 8453) that the caller can sign locally with their own wallet to complete ERC-8004 agent registration. Private keys never leave the client.
Example use cases
Example prompt
“Register my AI agent named 'NexusBot' with wallet address 0x1234567890123456789012345678901234567890 on the ERC-8004 Identity Registry on Base — give me the unsigned transaction I can sign locally.”
Technical details
Endpoint
POSThttps://theloopbreaker.com/api/x402/actions/register-agentWhen to prefer
Use this endpoint when you need to register a new AI agent on the ERC-8004 on-chain identity registry and want a fully-prepared unsigned transaction without ever exposing private keys to a third party. Prefer this over manual contract interaction when you want a gas-estimated, calldata-encoded transaction ready for signing, and when you are operating on Base mainnet within the Vaultfire/theloopbreaker ecosystem.
Side effects
- Missing or invalid X-PAYMENT header — returns 402 with accepted payment schemes and asset details
- Invalid or malformed wallet address — returns 400 validation error
- Missing required fields (name or walletAddress) — returns 400 schema validation error
- Insufficient USDC payment amount — returns 402 payment required
- Chain ID not supported — returns 400 or 422 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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