# Tempest AI Proofreader

> Tempest AI Proofreader is a paid API for AI agents from tempest-2zzx.vercel.app, paid per call via x402, $0.15/call, status unknown (last checked 2026-09-14).

Proofreads submitted text using AI, returning corrected and refined content with grammar, spelling, and style improvements.

## Facts

- Endpoint: POST https://tempest-2zzx.vercel.app/api/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/tempest-ai-proofreader-ae81919c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_31AIPT4tRFdm6083ARFuk

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 tempest-ai-proofreader-ae81919c -d '<json body>'
```

Example prompt: Can you proofread this paragraph for me and fix any grammar, spelling, or punctuation issues: 'The team have been working hardly to meets the deadline, but their is still alot of work to be done before we can launches the product.'

## When to prefer this

Choose this endpoint when you need AI-powered proofreading that corrects grammar, spelling, punctuation, and style in a single API call with pay-per-use USDC pricing via x402. Prefer it over standalone grammar tools when integrating into an automated content pipeline that already uses Tempest's ecosystem of 25 AI content endpoints, or when you need lightweight per-call billing without a subscription.

## Known failure modes

- Empty or missing `text` field returns a 400 validation error
- Extremely long text may exceed token limits and return an error or truncated result
- Payment failure (insufficient USDC) results in 402 Payment Required before processing
- Ambiguous text with domain-specific jargon may be over-corrected by the AI
- Non-English text submitted without context may be incorrectly processed

## How this service works

Compose, rewrite, translate, and refine content at scale. 25 AI-powered endpoints. Pay-per-call with USDC on Tempo.

## Output

Returns a JSON object with a `success` boolean and a `data` object containing the proofread version of the submitted text, with grammar, spelling, punctuation, and style corrections applied by AI.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "text"
 ],
 "properties": {
  "text": {
   "type": "string",
   "description": "Text to proofread"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "type": "object"
  },
  "success": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tempest-ai-proofreader-ae81919c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tempest-2zzx.vercel.app](https://www.zero.xyz/host/tempest-2zzx.vercel.app/llms.txt)