# AskClaude Sonnet — Pay-per-Question AI

> AskClaude Sonnet — Pay-per-Question AI is a paid API for AI agents from askclaude.shop, paid per call via x402, $0.030000/call, status unknown (last checked 2026-10-09).

Answers a user-provided prompt using Claude Sonnet for $0.03 per question via micropayment

## Facts

- Endpoint: POST https://askclaude.shop/ask/sonnet?utm_source=zero.xyz
- Price: $0.030000/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-09
- Success rate: 0% of calls made through Zero
- Activations on Zero: 3
- Tags: x402
- Canonical page: https://www.zero.xyz/c/askclaude-shop-f6865c32
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CqLM-Sr_nUTkwtHCqZNpT

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-f6865c32 -d '<json body>'
```

Example prompt: Ask Claude Sonnet: what are the key differences between a REIT and a real estate limited partnership, and which is generally better for passive income investors?

## When to prefer this

Choose this endpoint when you need a higher-quality, more nuanced AI response than Haiku can provide, but don't require the maximum capability of Opus. At $0.03/question it is ideal for moderate-complexity tasks like summarization, explanation, analysis, or drafting where Sonnet's balance of speed and intelligence is appropriate. Prefer this over self-hosted Claude integrations when you need a simple pay-per-use model without API key management.

## Known failure modes

- Payment not included or insufficient — 402 Payment Required
- Prompt field missing or empty — 400 Bad Request
- Claude API downstream error — 503 or 500
- Rate limiting if too many requests — 429 Too Many Requests
- System prompt too long — 400 validation error

## How this service works

Ask Claude Sonnet — smart AI answers, $0.03/question

## Output

A text response generated by Claude Sonnet answering the submitted prompt, with quality and depth characteristic of the Sonnet model tier. The response is a plain text AI-generated answer to the question provided.

## 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-f6865c32/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)