# Tempest AI Content Compose

> Tempest AI Content Compose is a paid API for AI agents from tempestars.vercel.app, paid per call via x402, $0.3/call, status unknown (last checked 2026-09-15).

Generates original written content from a prompt with configurable tone, style, length, and target audience

## Facts

- Endpoint: POST https://tempestars.vercel.app/api/compose
- Price: $0.3/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-content-compose-05f2d14c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EsOyVWYfo6vBa18Yekw7_

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-content-compose-05f2d14c -d '<json body>'
```

Example prompt: Write me a medium-length blog post aimed at small business owners about the benefits of email marketing — use a friendly, conversational tone and an educational style.

## When to prefer this

Choose this endpoint when you need to generate original written content from scratch given a topic or prompt, and want fine-grained control over tone, style, length, and audience. It is well-suited for automating content pipelines, marketing copy generation, or drafting documents at scale via pay-per-call without a subscription.

## Known failure modes

- Missing required 'prompt' field returns a validation error
- Invalid or unsupported tone/style values may produce unexpected output
- Very vague prompts may result in generic or low-quality content
- Payment failure via x402 protocol prevents request processing
- Rate limiting or server unavailability on Vercel hosting may cause 5xx errors

## 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 AI-generated written content based on the provided prompt, tone, style, length, and audience parameters.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "prompt"
 ],
 "properties": {
  "tone": {
   "type": "string",
   "description": "Tone"
  },
  "style": {
   "type": "string",
   "description": "Writing style"
  },
  "length": {
   "type": "string",
   "description": "Desired length: short, medium, long"
  },
  "prompt": {
   "type": "string",
   "description": "The writing prompt"
  },
  "audience": {
   "type": "string",
   "description": "Target audience"
  }
 }
}
```

## 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-content-compose-05f2d14c/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)