# Live ENS Name and Address Resolver

> Live ENS Name and Address Resolver is a paid API for AI agents from ai-data-marketplace-1042299154756.us-central1.run.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Resolve an ENS name to its current Ethereum address, or reverse-lookup an Ethereum address to its ENS name with forward-confirmation against the live ENS registry.

## Facts

- Endpoint: GET https://ai-data-marketplace-1042299154756.us-central1.run.app/api/v1/ens_resolve
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/live-ens-name-and-address-resolver-08df1854
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ldsGVD5ohyk3mMPek17mZ

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 live-ens-name-and-address-resolver-08df1854
```

Example prompt: What Ethereum address does vitalik.eth resolve to right now on the live ENS registry?

## When to prefer this

Use this endpoint when you need a real-time, authoritative resolution of an ENS name to an Ethereum address (or reverse), with forward-confirmation to prevent spoofing. Prefer it over cached or aggregated ENS lookups when correctness and liveness matter — e.g., before sending funds, verifying user identity, or checking current ENS ownership. It is best suited for single-record lookups; for batch processing many names, consider an alternative approach.

## Known failure modes

- ENS name not registered or has no resolver — returns success: false
- Address has no reverse ENS record set — returns success: false with empty ens_name
- ENS name forward and reverse records do not match — confirmation fails
- Invalid input format (malformed .eth name or non-hex address) — request error
- ENS registry temporarily unreachable — network or timeout error

## How this service works

Resolve an ENS name to its current Ethereum address or perform a reverse address lookup with forward-confirmation against the live ENS registry.

## Output

A JSON object containing: success (boolean), network (e.g. 'mainnet'), mode ('forward' or 'reverse'), ens_name (the resolved or confirmed ENS name), and address (the resolved or confirmed 0x Ethereum address). For reverse lookups, forward-confirmation is performed to ensure the reverse record matches the forward record.

## 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": [
      "input"
     ],
     "properties": {
      "input": {
       "type": "string",
       "description": "ENS name for forward resolution or EVM address for reverse resolution."
      }
     },
     "additionalProperties": true
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "success",
      "network",
      "mode",
      "ens_name",
      "address"
     ],
     "properties": {
      "mode": {
       "type": "string"
      },
      "address": {
       "type": "string"
      },
      "network": {
       "type": "string"
      },
      "success": {
       "type": "boolean"
      },
      "ens_name": {
       "type": "string"
      }
     },
     "additionalProperties": true
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "mode": "forward",
  "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
  "network": "ethereum",
  "success": true,
  "ens_name": "vitalik.eth"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/live-ens-name-and-address-resolver-08df1854/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ai-data-marketplace-1042299154756.us-central1.run.app](https://www.zero.xyz/host/ai-data-marketplace-1042299154756.us-central1.run.app/llms.txt)