# ENS Name Valuation Estimator

> ENS Name Valuation Estimator is a paid API for AI agents from api.web3identity.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Returns an estimated market value for an ENS (Ethereum Name Service) name based on its length, character composition, and current market data

## Facts

- Endpoint: GET https://api.web3identity.com/api/ens/value/web3
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-web3identity-com-f97e1235
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_b7IB_XGwjZmQ9ykkk2FSX

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-f97e1235
```

Example prompt: Can you estimate the market value of the ENS name 'web3.eth' — I want to know what it might be worth based on its length and current ENS market conditions before I decide whether to sell it.

## When to prefer this

Use this endpoint when you need a programmatic appraisal of an ENS name's market value before buying, selling, or listing it. Prefer this over manual comparables when you need a quick automated estimate that factors in name length, character composition, and live market signals for ENS domains specifically.

## Known failure modes

- ENS name not found or not registered — returns null or 404
- Invalid ENS name format — returns 400 bad request
- Market data unavailable — returns partial or cached valuation
- Rate limit exceeded — returns 429
- Payment not processed — returns 402 payment required

## How this service works

ENS name valuation estimate based on length, characters, and market data

## Output

Returns an estimated valuation for the given ENS name, factoring in name length, character type (numeric, alphabetic, emoji), rarity signals, and current ENS secondary market data. Likely includes a numeric price estimate in ETH or USD equivalent.

## Example request

```json
{
 "name": "web3.eth"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-web3identity-com-f97e1235/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)