# Crypto Shark Fleet – Text Summarizer

> Crypto Shark Fleet – Text Summarizer is a paid API for AI agents from cryptoshark-fleet.duckdns.org, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-11).

Summarizes a block of text (up to 12,000 characters) using an AI language model, returning a concise summary via an x402-paid endpoint on Base mainnet

## Facts

- Endpoint: POST https://cryptoshark-fleet.duckdns.org/worker/summarize?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-shark-fleet-text-summarizer-6380eab4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dtOAotOKO3BJGRVD8a1Om

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 crypto-shark-fleet-text-summarizer-6380eab4 -d '<json body>'
```

Example prompt: Can you summarize this article for me? Here it is: [paste up to 12,000 characters of text]. I just want the key points in a few sentences.

## When to prefer this

Use this endpoint when you need a quick, pay-per-call AI text summarization without committing to a subscription, particularly in crypto-native or agent workflows that already use x402 micropayments on Base. Good choice when your pipeline handles USDC payments on-chain and needs lightweight text condensation at $0.03 per call.

## Known failure modes

- Input text exceeds 12,000 character limit — request rejected
- Payment not settled on Base mainnet via x402 — 402 Payment Required error
- Model unavailable or overloaded — upstream timeout or 503 error
- Malformed JSON body missing required 'input' field — 400 Bad Request
- Empty or whitespace-only input — may return trivial or error response

## How this service works

x402-paid AI utility workers on Base mainnet

## Output

A JSON object containing the AI model name used (e.g. 'gpt-5.6-luna') and a 'result' field with the generated summary text. The response reflects the compressed meaning of the submitted input.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "string",
   "maxLength": 12000
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "model": "gpt-5.6-luna",
  "result": "..."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-shark-fleet-text-summarizer-6380eab4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from cryptoshark-fleet.duckdns.org](https://www.zero.xyz/host/cryptoshark-fleet.duckdns.org/llms.txt)