# Vextorium ENS Resolver

> Vextorium ENS Resolver is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-01).

Resolves ENS names to Ethereum addresses and Ethereum addresses to their primary ENS names, with round-trip reverse-record verification.

## Facts

- Endpoint: POST https://api.vextorium.com/ens-pago?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-ens-resolver-24cbc83c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5SLzH1-vQklRjoEoTj280

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 vextorium-ens-resolver-24cbc83c -d '<json body>'
```

Example prompt: What is the Ethereum wallet address for vitalik.eth? Also give me a link to its block explorer page.

## When to prefer this

Use this endpoint when you need to resolve ENS names to Ethereum addresses or reverse-resolve addresses to .eth names on Ethereum mainnet, especially when round-trip verification of reverse records is important. Prefer it over generic Web3 libraries when you need a simple HTTP POST without managing your own Ethereum node or RPC connection.

## Known failure modes

- ENS name not registered — returns null address
- Address has no primary ENS name set — returns null nombre_ens
- Reverse record mismatch — forward and reverse resolution disagree
- Invalid input format — non-ENS string and non-0x address
- Network RPC timeout causing lookup failure
- ENS name recently transferred with uncached records

## How this service works

ENS resolution on Ethereum: name to address (vitalik.eth -> 0x...) or address to primary name, with round-trip verification of reverse records.

## Output

Returns a JSON object containing the resolved Ethereum address (direccion), the matched ENS primary name (nombre_ens), and a block explorer URL (explorador) for the resolved address. Fields may be null if no record exists or verification fails.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "required": [
      "consulta"
     ],
     "properties": {
      "consulta": {
       "type": "string",
       "description": "ENS name (e.g. vitalik.eth) or 0x address"
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "direccion": {
       "type": [
        "string",
        "null"
       ]
      },
      "explorador": {
       "type": [
        "string",
        "null"
       ]
      },
      "nombre_ens": {
       "type": [
        "string",
        "null"
       ]
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-ens-resolver-24cbc83c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)