# Tempest AI Content Engine — Text Expand

> Tempest AI Content Engine — Text Expand is a paid API for AI agents from tempost.vercel.app, paid per call via x402, $0.2/call, status unknown (last checked 2026-10-11).

Expands a piece of text into a longer version using AI, with optional style and target length controls.

## Facts

- Endpoint: POST https://tempost.vercel.app/api/expand?utm_source=zero.xyz
- Price: $0.2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tempest-ai-content-engine-text-expand-9d3aeece
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YwKgXrovKg7jw_kwRnNVD

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-engine-text-expand-9d3aeece -d '<json body>'
```

Example prompt: Can you expand this product teaser into something about double the length, written in a professional style: 'Our new headphones deliver studio-quality sound in a sleek, portable package'?

## When to prefer this

Choose this endpoint when you need to systematically lengthen existing text content — such as product descriptions, blog drafts, or email copy — with control over writing style and expansion factor. It is distinct from a general rewrite or summarization endpoint because the explicit goal is increasing length and depth. Prefer it over generic LLM prompting when you want a pay-per-call, production-grade, deterministic API integration rather than managing your own model context.

## Known failure modes

- Missing required 'text' field returns a validation error
- Invalid or unsupported 'target_length' value may cause unexpected output length
- Very long input texts may hit token or size limits
- Payment failure (insufficient USDC) blocks the call before processing
- Ambiguous style instructions may produce inconsistently styled output

## 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-expanded version of the submitted text, elaborated according to the requested style and target length.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "text"
 ],
 "properties": {
  "text": {
   "type": "string",
   "description": "Text to expand"
  },
  "style": {
   "type": "string",
   "description": "Writing style"
  },
  "target_length": {
   "type": "string",
   "description": "Target expansion (double, triple)"
  }
 }
}
```

## 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-engine-text-expand-9d3aeece/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tempost.vercel.app](https://www.zero.xyz/host/tempost.vercel.app/llms.txt)