Tool detail

ENS Resolver

Resolves an ENS name to its Ethereum address, or an address to its primary ENS name, auto-detecting the direction.

Categories: Onchain data

Use when

look up the address behind an ENS name like vitalik.eth
find the primary ENS name for an Ethereum address

Not for

not for non-ENS naming systems such as Unstoppable Domains

Inputs

POST JSON body: { query: string } (required) - an ENS name or a 0x Ethereum address

Admitted input schema

{
  "type": "object",
  "properties": {
    "query": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "description": "An ENS name like vitalik.eth, or an Ethereum address starting with 0x. The service automatically figures out which one you gave it."
    }
  },
  "required": [
    "query"
  ],
  "additionalProperties": false
}

Endpoint

Method: POST
URL: https://ens-resolver.underscoredone.com/resolve

Payment

Protocol: x402
Listed price: 0.01 USDC per call on Base
Payment method: exact
Network: eip155:8453
Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.

Source

Directory: Coinbase x402 Bazaar
Record: POST https://ens-resolver.underscoredone.com/resolve
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z