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ENS Resolve (x402)
x402
ENS Resolve (x402) is a paid API for AI agents from ens-resolve.frcompanycheck.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-16).
Resolves ENS names to Ethereum addresses (forward) and Ethereum addresses to ENS names (reverse) with forward verification, via pay-per-call micropayment.
Price / call$0.003
Success—
StatusUnknown
How this service works
Pay-per-call ENS forward and reverse resolution for AI agents on Ethereum. Resolves name→address and address→name with forward verification. Public Ethereum RPCs + ENS registry only. x402 USDC on Base.
Output
A JSON object containing the queried name or address, a boolean 'found' field indicating whether resolution succeeded, and the resolved Ethereum address (for forward lookups) or ENS name (for reverse lookups), with forward verification applied.
Example use cases
Wallet address lookup for payment
“I want to send ETH to nick.eth — can you resolve that ENS name to the actual wallet address before I confirm the transaction?”
Reverse ENS lookup for identity display
“I have the Ethereum address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 — can you look up its ENS name so I can display something human-readable in my app?”
Verify ENS forward resolution integrity
“Can you check if the ENS name coinbase.eth resolves to an address and confirm that the reverse lookup on that address also points back to coinbase.eth?”
Technical details
Endpoint
GEThttps://ens-resolve.frcompanycheck.workers.dev/v1/resolve/%7Bname%7D?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need lightweight, pay-per-call ENS resolution without managing your own Ethereum node or RPC subscription. Ideal for AI agents that infrequently need to resolve .eth names or reverse-lookup wallet addresses on Ethereum mainnet, and want to pay only for what they use via USDC micropayments on Base rather than committing to a monthly API plan.
Side effects
- ENS name not registered or has no resolver — returns found: false
- Ethereum address has no reverse ENS record set — returns found: false
- Payment not provided or insufficient USDC via x402 — returns HTTP 402
- Invalid ENS name format or malformed Ethereum address input — may return error or found: false
- Public RPC rate limits or downtime causing resolution failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"name": "vitalik.eth",
"found": true,
"address": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045"
}
}Tags
x402
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