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ENS / Basename Resolver (x402)
x402
ENS / Basename Resolver (x402) 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), returning verified records, reverse-match status, 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, direction of lookup (forward or reverse), reverse name, verification status (bidirectional match), safe-to-send flag, any stored records (avatar, URL), whether the address is a contract or EIP-7702 delegated, the chain checked, a human-readable summary, and suggested next API calls for deeper analysis.
Example use cases
Pre-send ENS safety check
“I'm about to send 0.5 ETH to jesse.base.eth — can you resolve that Basename to its actual wallet address and confirm the forward and reverse lookups match before I proceed?”
Reverse lookup from wallet address
“I have the address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 — can you look up what ENS name is associated with it and tell me if it's verified?”
Avatar and profile record fetch
“Can you resolve vitalik.eth and pull back any profile records like avatar or website URL stored in the ENS name?”
Technical details
Endpoint
GEThttps://kr-x402-mvp.kgy5612.workers.dev/v1/ens-resolve?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs to resolve ENS names or Basenames to Ethereum addresses (or vice versa) before executing onchain actions like token transfers, contract interactions, or wallet lookups. It is especially valuable when you need bidirectional verification and a safe-to-send flag rather than a raw resolver call. No API key is required — payment is per-call via x402 USDC on Base, making it suitable for autonomous agent pipelines.
Side effects
- ENS name does not exist or has expired — returns null address
- Address has no reverse ENS record set — reverse lookup returns empty
- Forward and reverse records do not match — verified:false and safe_to_send:false
- Invalid address format (not 0x + 40 hex chars) — schema validation error
- Name resolution timeout due to ENS provider unavailability
- Payment failure via x402 if USDC balance is insufficient
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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