# AskClaude Haiku — Pay-per-Question AI

> AskClaude Haiku — Pay-per-Question AI is a paid API for AI agents from askclaude.shop, paid per call via x402, $0.010000/call, status unknown (last checked 2026-09-16).

Answers a single user question using Claude Haiku for $0.01 USDC via the x402 payment protocol

## Facts

- Endpoint: POST https://askclaude.shop/ask/haiku
- Price: $0.010000/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 20
- Tags: x402
- Canonical page: https://www.zero.xyz/c/askclaude-shop-2b03859a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ra93-xSHb_TCSk9_Wr5Zd

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 askclaude-shop-2b03859a -d '<json body>'
```

Example prompt: Ask Claude Haiku this question for me — what are the main differences between TCP and UDP? — and use any system prompt you want to keep the answer concise.

## When to prefer this

Use this endpoint when you need a fast, cheap AI answer and cost-efficiency matters most — Claude Haiku is optimized for speed and low cost at $0.01/question. Prefer this over the Sonnet or Opus endpoints when the query is straightforward and doesn't require deep reasoning or nuanced long-form output.

## Known failure modes

- Payment not included or insufficient — 402 Payment Required
- Prompt field missing or empty — 400 Bad Request
- Claude API upstream error — 502 or 503
- Rate limit exceeded on the provider side — 429 Too Many Requests
- Invalid system prompt format — 400 Bad Request

## How this service works

Ask Claude Haiku — fast AI answers, $0.01/question

## Output

A text response generated by Claude Haiku answering the submitted prompt, returned after a $0.01 USDC x402 micropayment is processed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "prompt": {
   "type": "string",
   "description": "Your question for Claude"
  },
  "system": {
   "type": "string",
   "description": "Optional system prompt"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/askclaude-shop-2b03859a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from askclaude.shop](https://www.zero.xyz/host/askclaude.shop/llms.txt)