# Tempest Keyword Extractor

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

Extracts ranked keywords with relevance scores from a given text input

## Facts

- Endpoint: POST https://whatchuneed.vercel.app/api/tempest/keywords
- 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-keyword-extractor-ed976493
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_aFqTy04Bwc5AGpv2XqqlR

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-keyword-extractor-ed976493 -d '<json body>'
```

Example prompt: Extract the top 10 keywords from this article and rank them by relevance: 'Machine learning is transforming healthcare by enabling faster diagnosis, predictive analytics, and personalized treatment plans through large-scale data analysis.'

## When to prefer this

Use this endpoint when you need fast, pay-per-call keyword extraction without provisioning an NLP service. Ideal for lightweight SEO analysis, content tagging, or topic detection pipelines where you want relevance-ranked terms rather than raw frequency counts.

## Known failure modes

- Missing required 'text' field returns a validation error
- Empty string input may return zero keywords
- Very short inputs may yield low-quality or sparse keyword results
- Non-English text may produce unreliable relevance scores
- Count parameter exceeding available distinct keywords returns fewer results than requested

## How this service works

320+ pay-per-call API endpoints across accommodation, LLM, code execution, crypto, medical, finance, and more. One API, one payment. Powered by x402 protocol.

## Output

Returns a list of extracted keywords each with a relevance score (float), plus the total count of keywords found. Keywords are ranked by semantic importance to the input text.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "text"
 ],
 "properties": {
  "text": {
   "type": "string"
  },
  "count": {
   "type": "integer"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "total": {
   "type": "integer"
  },
  "keywords": {
   "type": "array",
   "items": {
    "type": "object",
    "properties": {
     "keyword": {
      "type": "string"
     },
     "relevance": {
      "type": "number"
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tempest-keyword-extractor-ed976493/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from whatchuneed.vercel.app](https://www.zero.xyz/host/whatchuneed.vercel.app/llms.txt)