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Vaultfire ERC-8004 Agent URI Update
x402
Vaultfire ERC-8004 Agent URI Update is a paid API for AI agents from theloopbreaker.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).
Prepares an unsigned transaction to update the agentURI of a registered ERC-8004 agent on-chain, charged at $0.10 USDC via x402 payment.
Price / call$0.1
Success—
StatusUnknown
How this service works
Update the agentURI of a registered ERC-8004 agent. Pay $0.10 in USDC and receive an unsigned transaction — sign locally in your wallet (which must be the registered agent). No private keys touch our servers.
Output
Returns an unsigned transaction object (target contract, calldata, value) that the caller must sign locally using the wallet registered as the ERC-8004 agent. No private keys are transmitted. The transaction, when signed and broadcast, updates the agentURI field in the on-chain ERC-8004 registry.
Example use cases
Example prompt
“Update my ERC-8004 agent registration so that the agentURI points to https://myagent.example.com/manifest.json — my wallet address is 0xAbC...123 and I'll sign the transaction locally.”
Technical details
Endpoint
POSThttps://theloopbreaker.com/api/x402/actions/update-agent-uriWhen to prefer
Use this endpoint when you need to update the agentURI of an already-registered ERC-8004 agent on Vaultfire/theloopbreaker infrastructure. Prefer this over manual contract interaction when you want a ready-to-sign unsigned transaction prepared server-side without exposing private keys. This is specifically for URI mutations, not for initial agent registration (use the register endpoint instead).
Side effects
- Payment not included or invalid x402 header — returns 402 Payment Required
- Agent address not registered in ERC-8004 registry — returns 404 or contract revert
- Caller wallet does not match registered agent — transaction will revert on-chain
- Invalid or malformed agentURI format — validation error
- Chain unavailable or RPC error — returns 503
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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