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ENS/Basename Resolver & Address Lookup
x402
ENS/Basename Resolver & Address Lookup is a paid API for AI agents from x402-services-production.up.railway.app, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Resolves an ENS name or Basename to its underlying wallet address (or vice versa), returning on-chain identity metadata for a given name or 0x address.
Price / call$0.003
Success—
StatusUnknown
How this service works
Resolve an ENS name or Basename to an address, or reverse-resolve a 0x address to its name + avatar. Send { input }. Human-readable identity for agents.
Output
Returns the resolved 0x wallet address for a given ENS name or Basename, or the ENS/Basename associated with a given address, along with any available on-chain identity metadata such as avatar, description, or linked records.
Example use cases
Wallet address from ENS before sending funds
“I want to send crypto to alice.eth — can you look up the actual 0x wallet address that ENS name points to before I sign the transaction?”
Reverse-resolve address to human name
“I have this wallet address 0x71C7656EC7ab88b098defB751B7401B5f6d8976F — can you check if it has an ENS name or Basename associated with it?”
Validate counterparty identity on-chain
“Before I interact with this contract deployer, can you tell me if the address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 has a known ENS name or verified on-chain identity?”
Technical details
Endpoint
POSThttps://x402-services-production.up.railway.app/api/crypto/ensWhen to prefer
Use this endpoint when an agent needs to translate between human-readable ENS/Basename identifiers and raw 0x wallet addresses, or to enrich a known address with its on-chain identity. It is the right choice for pre-transaction identity checks, display name resolution, and any workflow where you need to map a name to an address or vice versa without managing your own ENS RPC connection. Prefer over generic ENS libraries when operating in a pay-per-call, no-API-key environment.
Side effects
- ENS name not registered or expired — returns null or empty resolution
- Address has no reverse ENS record — reverse lookup returns nothing
- Invalid input format (neither valid ENS/Basename nor 0x address) — returns error
- ENS resolution temporarily unavailable due to RPC issues — returns timeout or 5xx
- Basename not found on Base L2 — returns null
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | string | An ENS/Basename (e.g. vitalik.eth) or a 0x address |
Tags
x402
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