# ENS Name Resolver (Agent Tollgate Engine)

> ENS Name Resolver (Agent Tollgate Engine) is a paid API for AI agents from skinwinking.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-31).

Resolves an ENS name (e.g. vitalik.eth) to its Ethereum address, or performs a reverse lookup from a 0x address to an ENS name, via a pay-per-call x402 API.

## Facts

- Endpoint: GET https://skinwinking.com/api/v1/data/ens?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ens-name-resolver-agent-tollgate-engine-965f4b4a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_v7TKHaAoo-Yv1UbhzRP9Z

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 ens-name-resolver-agent-tollgate-engine-965f4b4a
```

Example prompt: What Ethereum address does vitalik.eth resolve to?

## When to prefer this

Use this endpoint when you need to programmatically resolve ENS names to Ethereum addresses (or vice versa) as part of an agent workflow — for example, before sending funds, verifying an on-chain identity, or enriching a user profile with their ENS handle. It is priced at $0.002 USDC per call via x402, making it suitable for automated, per-request agent use without a subscription.

## Known failure modes

- ENS name not registered or does not resolve — may return null or empty address
- Invalid ENS name format returns an error
- 0x address has no reverse ENS record set — returns no name
- Payment failure via x402 (insufficient USDC balance) blocks the request
- Network or RPC timeout when querying ENS registry on-chain

## How this service works

50 pay-per-call tools for agents over x402 (USDC on Base, Polygon, Solana): crypto market data, token audits, indicators, swap routing, web extraction, DNS/WHOIS/email checks, FX, weather and AI text/image tools.

## Output

A JSON object containing the resolved Ethereum address (e.g. {"address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"}) for a forward ENS lookup, or the corresponding ENS name for a reverse lookup.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "name"
     ],
     "properties": {
      "name": {
       "type": "string",
       "description": "ENS name such as vitalik.eth, or a 0x address 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": {
  "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ens-name-resolver-agent-tollgate-engine-965f4b4a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from skinwinking.com](https://www.zero.xyz/host/skinwinking.com/llms.txt)