# ENS Name Resolver

> ENS Name Resolver is a paid API for AI agents from api.web3identity.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).

Resolves an ENS (Ethereum Name Service) name to its underlying Ethereum address and associated records

## Facts

- Endpoint: GET https://api.web3identity.com/api/ens/resolve/base.eth
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-web3identity-com-43e353ca
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_547HsPgJNRVOawJhLwMtu

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 api-web3identity-com-43e353ca
```

Example prompt: What Ethereum address does vitalik.eth resolve to? Can you look up all the ENS records for that name too?

## When to prefer this

Use this endpoint when you need to resolve a human-readable ENS name (e.g. alice.eth, base.eth) to its underlying Ethereum address or retrieve its associated profile records. Prefer this over on-chain lookups when you need a simple HTTP API without managing your own Ethereum node or web3 provider. Ideal for agents that need to identify wallet addresses from social/human-readable identifiers in the Ethereum ecosystem.

## Known failure modes

- ENS name does not exist or has not been registered — returns 404 or null address
- ENS name is expired — may return stale or empty records
- Network or RPC timeout when querying Ethereum — returns 503 or timeout error
- Invalid ENS name format provided — returns 400 bad request
- Name exists but has no resolver set — returns empty records

## How this service works

Resolve ENS name to address and records

## Output

Returns the resolved Ethereum wallet address and associated ENS records (e.g. avatar, email, content hash, social handles) for the given ENS name

## Example request

```json
{
 "name": "vitalik.eth"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-web3identity-com-43e353ca/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.web3identity.com](https://www.zero.xyz/host/api.web3identity.com/llms.txt)