# Tempest AI Content Engine — Keyword Extraction

> Tempest AI Content Engine — Keyword Extraction 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).

Extracts a specified number of keywords from a given block of text using AI

## Facts

- Endpoint: POST https://tempestars.vercel.app/api/keywords
- 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-content-engine-keyword-extraction-e8176ebf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SboodCr7zoGRNjS_yBJTp

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-keyword-extraction-e8176ebf -d '<json body>'
```

Example prompt: Pull the top 8 keywords from this product description: 'Introducing the Apex Pro running shoe — engineered for trail runners who demand grip, durability, and ultra-light performance on any terrain.'

## When to prefer this

Choose this endpoint when you need fast, AI-powered keyword extraction from arbitrary text at pay-per-call pricing — ideal for automating SEO workflows, content tagging, or topic analysis without committing to a subscription. Prefer it over general NLP libraries when you want a managed, low-friction API with no model setup required.

## Known failure modes

- Empty or missing text field returns an error
- Count parameter too large may return fewer keywords than requested
- Very short input text may yield fewer keywords than the count requested
- Network or payment failure returns a non-2xx HTTP response
- Malformed JSON body causes a 400-level error

## 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 extracted keywords from the input text, up to the requested count.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "text"
 ],
 "properties": {
  "text": {
   "type": "string",
   "description": "Text to extract keywords from"
  },
  "count": {
   "type": "number",
   "description": "Number of keywords"
  }
 }
}
```

## 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-keyword-extraction-e8176ebf/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)