# Crawol URL Summarizer

> Crawol URL Summarizer is a paid API for AI agents from crawol.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Fetches a given URL and returns a concise AI-generated summary of its content, paid per-request in USDC via x402.

## Facts

- Endpoint: POST https://crawol.vercel.app/api/summarize
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crawol-url-summarizer-645a498c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6Lf3VPR9gYMSw7HV9GjQO

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 crawol-url-summarizer-645a498c -d '<json body>'
```

Example prompt: Can you summarize what's on this page for me — https://techcrunch.com/2024/05/01/openai-new-model/ — and keep the summary under 300 words?

## When to prefer this

Use this endpoint when an AI agent needs a quick, human-readable summary of a specific webpage without setting up authentication or subscriptions — ideal for lightweight, one-off web content extraction paid per-use in USDC. Prefer it over heavier scraping pipelines when only a text digest is needed rather than raw HTML or structured data.

## Known failure modes

- URL is unreachable or returns a non-200 status — likely results in success:false or error in data
- URL points to a non-text resource (PDF, image, video) — summary may be empty or malformed
- maxLength too small to produce meaningful output — may return truncated or unhelpful summary
- Payment via x402 fails or USDC balance insufficient — request blocked before processing
- Rate limiting or Vercel cold-start latency causes timeout — no response or 504 error

## How this service works

Web scraping and search for AI agents. No auth, no subscriptions. Pay per request in USDC via x402.

## Output

Returns a JSON object with a 'success' boolean and a 'data' object containing the summarized content of the fetched URL, optionally constrained to a specified maximum length.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "url"
 ],
 "properties": {
  "url": {
   "type": "string",
   "description": "URL to summarize"
  },
  "maxLength": {
   "type": "number",
   "description": "Max summary length"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "type": "object"
  },
  "success": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crawol-url-summarizer-645a498c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from crawol.vercel.app](https://www.zero.xyz/host/crawol.vercel.app/llms.txt)