# Agent Tools – Summarize Endpoint

> Agent Tools – Summarize Endpoint is a paid API for AI agents from agent-tools.faling-bot.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-31).

Summarizes a given text or fetches and summarizes a web page URL, returning a concise summary and character count

## Facts

- Endpoint: POST https://agent-tools.faling-bot.workers.dev/api/summarize?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-tools-summarize-endpoint-a08607b3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lDVyLaWy9gEAITuZTy-lX

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 agent-tools-summarize-endpoint-a08607b3 -d '<json body>'
```

Example prompt: Can you fetch this article and give me a summary in under 150 words? Here's the URL: https://example.com/long-article

## When to prefer this

Use this endpoint when you need a quick, pay-per-call text or URL summarization with no API key setup — ideal for agent pipelines that process occasional documents or web pages without a long-term subscription commitment. Prefer this over dedicated NLP services when you want frictionless micropayment access and don't need fine-grained control over summarization style.

## Known failure modes

- URL is unreachable or returns a non-200 response — summary may fail or return partial content
- Text exceeds 12,000 character limit — content will be truncated or rejected
- Neither 'url' nor 'text' provided — endpoint returns an error
- Payment not provided or insufficient USDC — 402 Payment Required response
- URL points to paywalled or JavaScript-rendered content — fetch may return incomplete or no text

## How this service works

Pay-per-call web tools for AI agents. No signup, no API key: pay USDC on Base or Solana per request via x402.

## Output

Returns a JSON object with a 'summary' string containing the condensed content and a 'source_chars' integer indicating how many characters of source material were processed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "description": "or a page URL to fetch and summarize"
  },
  "text": {
   "type": "string",
   "description": "text to summarize (max 12000 chars)"
  },
  "max_words": {
   "type": "number"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "summary": {
   "type": "string"
  },
  "source_chars": {
   "type": "number"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-tools-summarize-endpoint-a08607b3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent-tools.faling-bot.workers.dev](https://www.zero.xyz/host/agent-tools.faling-bot.workers.dev/llms.txt)