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ENS Reverse Resolver
x402
ENS Reverse Resolver is a paid API for AI agents from x402-gateway-production.up.railway.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Reverse-resolves an Ethereum wallet address to its human-readable ENS (Ethereum Name Service) name
Price / call$0.001
Success—
StatusUnknown
How this service works
Reverse-resolve an Ethereum address to its ENS name
Output
Returns the ENS (.eth) domain name associated with the given Ethereum address, or an indication that no ENS name is registered to that address.
Example use cases
Example prompt
“What's the ENS name registered to the Ethereum address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045? Just give me the .eth domain if one exists.”
Technical details
Endpoint
GEThttps://x402-gateway-production.up.railway.app/api/ens/reverseWhen to prefer
Use this endpoint when you need to convert a raw Ethereum address into a human-readable ENS identity. Ideal for enriching wallet address data in UIs, identifying counterparties in transactions, or displaying friendly names instead of hex strings. Prefer this over a full ENS forward-resolution endpoint when you already have the address and want the name.
Side effects
- Address has no reverse ENS record registered — returns null or empty result
- Malformed Ethereum address (not a valid hex address) — returns 400 error
- ENS resolution service unavailable or timeout — returns 500 error
- Address exists but ENS reverse record not set by owner — returns no name found
Input
{
"address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"name": "vitalik.eth",
"address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
}Tags
x402
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