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ENS / Basename Name Resolution
x402
ENS / Basename Name Resolution is a paid API for AI agents from kr-x402-mvp.kgy5612.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-31).
Resolves an ENS name or Basename to an Ethereum address (or reverse-looks up a name from an address), with verification, records, and contract-safety checks.
Price / call$0.002
Success—
StatusUnknown
How this service works
Pay-per-call crypto microdata for trading/onchain AI agents via x402 (USDC on Base): Base gas, token risk, balances, multi-venue prices, Hyperliquid book/funding, kimchi premium. No API keys.
Output
Returns the resolved Ethereum address, the direction of resolution (forward/reverse), whether the name is verified (forward and reverse match), ENS text records (avatar, URL), whether the address is a contract or EOA on Base, an EIP-7702 delegation flag, a safe_to_send boolean, a checked_at timestamp, and suggested follow-up endpoint paths for further data.
Example use cases
Safe address verification before token send
“Before I send 50 USDC to jesse.base.eth, resolve it to an Ethereum address and check whether the forward and reverse records are verified and it's safe to send to.”
Reverse lookup from address to name
“I have the address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 — can you do a reverse lookup and tell me what ENS name it maps to?”
Avatar and profile record fetch for a dApp
“Fetch the ENS records for vitalik.eth — I need the avatar and URL records to display in the profile section of my app.”
Technical details
Endpoint
GEThttps://kr-x402-mvp.kgy5612.workers.dev/v1/name-resolution?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs to resolve a human-readable ENS or Basename to an Ethereum address before executing an onchain action (e.g., token transfer, contract call), or when building a UI that displays ENS profile data. Prefer this over manual RPC calls because it bundles forward resolution, reverse verification, contract detection, and ENS record retrieval in a single pay-per-call request with no API key required, billed at $0.002 USDC via x402.
Side effects
- Name not found or not yet registered returns an error or null address
- Reverse record not set means reverse_name will be absent and verified will be false
- Invalid address format (non-0x hex) rejected by regex validation
- ENS resolution timeout if upstream ENS resolvers are slow
- Mismatched forward/reverse records returned with verified: false and safe_to_send: false
- x402 payment failure if USDC balance is insufficient returns HTTP 402
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"name": "vitalik.eth",
"next": [
"/crypto/contract-info?address=0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
"/crypto/wallet-snapshot?wallet=0xd8da6bf26964af9d7eed9e03e53415d37aa96045"
],
"input": "vitalik.eth",
"address": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
"records": {
"url": "https://vitalik.ca",
"avatar": "eip155:1/erc1155:0xb32979486938aa9694bfc898f35dbed459f44424/10063"
},
"summary": "vitalik.eth -> 0xd8da6bf26964af9d7eed9e03e53415d37aa96045 (reverse matches: verified)",
"verified": true,
"direction": "forward",
"checked_at": "2026-10-30T05:40:00Z",
"is_basename": false,
"reverse_name": "vitalik.eth",
"safe_to_send": true,
"contract_check": {
"chain": "base",
"is_contract": false,
"eip7702_delegated": false
}
}
}Tags
x402
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