# Crypto Shark Fleet – Research Brief Worker

> Crypto Shark Fleet – Research Brief Worker is a paid API for AI agents from cryptoshark-fleet.duckdns.org, paid per call via x402, $0.12/call, status unknown (last checked 2026-10-11).

Generates an AI-produced research brief from a text prompt, paid per-call via x402 on Base mainnet

## Facts

- Endpoint: POST https://cryptoshark-fleet.duckdns.org/worker/research-brief?utm_source=zero.xyz
- Price: $0.12/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-research-brief-worker-e46d817f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_n0WTkCGSDDUYbqGYzQ5ri

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-research-brief-worker-e46d817f -d '<json body>'
```

Example prompt: Can you put together a research brief on the competitive landscape of Layer 2 blockchain networks in 2025, including key players, market share trends, and technology differentiators?

## When to prefer this

Choose this endpoint when you need a quick AI-generated research brief on any topic and are comfortable paying $0.12 USDC per call via the x402 protocol on Base mainnet. It is well-suited for agents that need on-demand research synthesis without maintaining their own LLM infrastructure. Prefer alternatives if you need deterministic structured data extraction, real-time web search, or free-tier access.

## Known failure modes

- Payment not received or x402 handshake fails — request rejected before processing
- Input text exceeds 16,000 character limit — validation error returned
- Model unavailable or overloaded — service timeout or 503 error
- Malformed JSON input — 400 bad request
- Insufficient USDC balance on Base mainnet — payment failure

## How this service works

x402-paid AI utility workers on Base mainnet

## Output

A JSON object containing the name of the AI model used (e.g. 'gpt-5.6-luna') and a 'result' field with the generated research brief as a text string.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "string",
   "maxLength": 16000
  }
 }
}
```

## 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-research-brief-worker-e46d817f/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)