# ClawFetch Extractor Discovery

> ClawFetch Extractor Discovery is a paid API for AI agents from api.clawfetch.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Lists all 17 available structured-data extractors and the domains each supports, enabling agents to check compatibility before calling the paid /extract endpoint.

## Facts

- Endpoint: GET https://api.clawfetch.ai/extractors
- 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/clawfetch-extractor-discovery-a1b65768
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7we0aNkoyiXcJvUmGGH0m

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 clawfetch-extractor-discovery-a1b65768
```

Example prompt: Before I try to extract structured data from a URL, can you pull up the full list of ClawFetch's 17 extractors so I can see which sites and domains are supported?

## When to prefer this

Use this endpoint before calling /extract to avoid wasting the extraction fee on an unsupported domain. It is the cheapest call in the ClawFetch suite ($0.001 USDC) and should always be used as a routing check when the target URL's compatibility is uncertain. Prefer this over guessing or hardcoding a domain list.

## Known failure modes

- Network or service unavailability returning 5xx errors
- Payment failure if x402 micropayment of $0.001 USDC is not processed correctly
- Empty or malformed response if extractor registry is temporarily inconsistent
- Rate limiting if called too frequently

## How this service works

Discovery endpoint listing all 17 available structured-data extractors and the domains each one supports, so an agent can decide whether /extract can handle a given URL before paying for it.

## Output

Returns a structured list of all 17 available extractors, each with its name and the set of domains or site types it supports. Agents can use this to determine whether a given URL will be handled by a specialized extractor before making a paid /extract call.

## 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": [],
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/clawfetch-extractor-discovery-a1b65768/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.clawfetch.ai](https://www.zero.xyz/host/api.clawfetch.ai/llms.txt)