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ENS / Basename Resolve & Reverse Lookup
x402
ENS / Basename Resolve & Reverse Lookup 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-lookup an address to its name), with verification, ENS records, and send-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, reverse name, verification status (forward-reverse match), ENS records (avatar, URL), whether the address is a contract or EOA on Base, a safe-to-send flag, and suggested next API calls for deeper analysis.
Example use cases
Safe send verification before transfer
“Before I send USDC to jesse.base.eth, resolve that Basename to its address and confirm the forward and reverse records are verified so I'm not sending to the wrong place.”
Profile enrichment for onchain user
“Look up the ENS name vitalik.eth and give me the resolved address, avatar, and any profile URL stored in the ENS records.”
Reverse lookup of counterparty address
“I have the address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 — can you reverse-lookup its ENS name and tell me if it's verified?”
Technical details
Endpoint
GEThttps://kr-x402-mvp.kgy5612.workers.dev/api/ens-resolve?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs to resolve a human-readable ENS name or Basename to a wallet address before sending funds, or to enrich a wallet address with its ENS identity. Particularly valuable when you need forward-reverse verification (i.e., confirming the name legitimately points to and is claimed by the address) and safe-to-send assurance. Prefer over generic RPC calls when you also want ENS records (avatar, URL) and a contract-vs-EOA check in a single call.
Side effects
- Name not found or not registered — returns null address
- Address has no reverse record set — reverse_name is null
- Forward-reverse mismatch — verified: false, safe_to_send: false
- Invalid address format — 400 validation error
- Payment failure or insufficient USDC balance — 402 error
- Network timeout resolving ENS — 5xx error
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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