# Tempest AI Proofreader

> Tempest AI Proofreader is a paid API for AI agents from tempestars.vercel.app, paid per call via x402, $0.15/call, status unknown (last checked 2026-09-15).

Proofreads submitted text using AI, identifying and correcting grammar, spelling, punctuation, and style errors.

## Facts

- Endpoint: POST https://tempestars.vercel.app/api/proofread
- Price: $0.15/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tempest-ai-proofreader-06c73ecf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MmZHUIBGwImoyndCgIun-

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-06c73ecf -d '<json body>'
```

Example prompt: Can you proofread the following paragraph and fix any grammar, spelling, or punctuation errors: 'The team have recieved you're report and are currently revewing it's contents to ensure all the requirments are meet.'

## When to prefer this

Choose this endpoint when you need lightweight, pay-per-call proofreading without a subscription, especially inside automated content pipelines or agent workflows that process user-generated text, blog drafts, emails, or documents. It is ideal when you want AI-powered grammar and spelling correction without integrating a full writing assistant SDK.

## Known failure modes

- Empty or missing 'text' field returns a validation error
- Extremely long text may time out or exceed token limits
- Non-English text may produce inaccurate corrections if the model is primarily English-trained
- Ambiguous or highly technical jargon may be incorrectly flagged as errors
- Payment failure (insufficient USDC) results in a 402 response before processing begins

## 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 flag and a data object containing the proofread or corrected version of the input text, along with any identified errors or suggested corrections.

## 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-06c73ecf/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tempestars.vercel.app](https://www.zero.xyz/host/tempestars.vercel.app/llms.txt)