# Agent Data Tools – ENS Name/Address Lookup

> Agent Data Tools – ENS Name/Address Lookup is a paid API for AI agents from agent-data-tools.revmesh2074.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-14).

Resolves an ENS name to its Ethereum address (and metadata), or performs a reverse lookup from an address to its ENS name

## Facts

- Endpoint: GET https://agent-data-tools.revmesh2074.workers.dev/ens?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-data-tools-ens-name-address-lookup-7c3fd721
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ar_ePH6es-wo2CKAc9VLz

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability agent-data-tools-ens-name-address-lookup-7c3fd721
```

Example prompt: What Ethereum address does vitalik.eth resolve to, and does it have an avatar set?

## When to prefer this

Use this endpoint when you need a quick, pay-per-call ENS resolution without setting up an Ethereum node or managing API keys. Ideal for agents that occasionally need to resolve .eth names or reverse-lookup addresses on Base/Ethereum without committing to a subscription. For high-volume ENS lookups, a dedicated ENS SDK or Ethereum RPC provider may be more cost-effective.

## Known failure modes

- ENS name not registered or expired — returns null address or error
- Address has no reverse ENS record — no name returned
- Invalid ENS name format — returns 400 or validation error
- ENS resolver node temporarily unavailable — upstream timeout
- Network congestion on Ethereum causing slow resolution

## How this service works

Read public static documentation as text or Markdown with code, tables, headings and links for $0.002 USDC on Base via x402. Inspect real cached examples and an unsigned quote, then buy with a capped Node CLI. No account or API key. No JavaScript rendering, authenticated or paywalled access. Other paid utilities remain available.

## Output

Returns a JSON object with the resolved ENS name, the query type (name or address), the original query, the avatar URL (if set), the resolved Ethereum address, and a timestamp of when the lookup was performed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "name"
     ],
     "properties": {
      "name": {
       "type": "string",
       "description": "An ENS name such as vitalik.eth, or an address (0x...) for reverse lookup"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "name": "vitalik.eth",
  "type": "name",
  "query": "vitalik.eth",
  "avatar": "https://euc.li/vitalik.eth",
  "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
  "checkedAt": "2026-10-13T09:40:00.000Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-data-tools-ens-name-address-lookup-7c3fd721/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent-data-tools.revmesh2074.workers.dev](https://www.zero.xyz/host/agent-data-tools.revmesh2074.workers.dev/llms.txt)