# Whatchuneed Tempest Proofreader

> Whatchuneed Tempest Proofreader is a paid API for AI agents from whatchuneed.vercel.app, paid per call via x402, $0.15/call, status unknown (last checked 2026-09-14).

Proofreads submitted text and returns a corrected version with a detailed list of individual corrections and error count

## Facts

- Endpoint: POST https://whatchuneed.vercel.app/api/tempest/proofread
- Price: $0.15/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/whatchuneed-tempest-proofreader-33be3c86
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_b_8jM3jaIB2Z1FEGH3NZ1

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 whatchuneed-tempest-proofreader-33be3c86 -d '<json body>'
```

Example prompt: Can you proofread this for me and show me exactly what was wrong: 'The quik brown fox jumpd over the lasy dog and it's freind'?

## When to prefer this

Choose this endpoint when you need both a corrected version of text AND a structured, position-indexed list of individual corrections — ideal for pipelines that need to audit, log, or display specific changes rather than just receive a clean output. It is pay-per-call with no subscription overhead, making it suitable for sporadic or agent-driven proofreading tasks. Prefer it over LLM-based prompting when you want deterministic, structured correction metadata rather than a free-form rewrite.

## Known failure modes

- Empty or missing 'text' field returns validation error
- Extremely long text may hit payload size limits
- Non-English text may produce unreliable corrections or no corrections
- Payment failure (HTTP 402) if USDC balance is insufficient
- Service unavailability returns 5xx error with no correction data

## How this service works

320+ pay-per-call API endpoints across accommodation, LLM, code execution, crypto, medical, finance, and more. One API, one payment. Powered by x402 protocol.

## Output

Returns a JSON object containing: a 'corrected' string with all errors fixed, a 'corrections' array where each item includes the error type, the original erroneous fragment, its character position in the original text, and the corrected replacement, plus an 'error_count' integer summarizing the total number of corrections made.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "text"
 ],
 "properties": {
  "text": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "corrected": {
   "type": "string"
  },
  "corrections": {
   "type": "array",
   "items": {
    "type": "object",
    "properties": {
     "type": {
      "type": "string"
     },
     "original": {
      "type": "string"
     },
     "position": {
      "type": "integer"
     },
     "corrected": {
      "type": "string"
     }
    }
   }
  },
  "error_count": {
   "type": "integer"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/whatchuneed-tempest-proofreader-33be3c86/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from whatchuneed.vercel.app](https://www.zero.xyz/host/whatchuneed.vercel.app/llms.txt)