# x402-tools-hub Extract Keywords

> x402-tools-hub Extract Keywords is a paid API for AI agents from tools-hub-v4-xi.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Extracts the most relevant keywords from a given text or content input using a paid AI-powered endpoint.

## Facts

- Endpoint: POST https://tools-hub-v4-xi.vercel.app/api/extract-keywords
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-tools-hub-extract-keywords-e1d67b4a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pR16O4nKAcmLY5WMrvHdX

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 x402-tools-hub-extract-keywords-e1d67b4a -d '<json body>'
```

Example prompt: Can you extract the key keywords from this article text: 'Decentralized finance is reshaping global banking by enabling permissionless lending, yield farming, and cross-border payments without intermediaries.'

## When to prefer this

Choose this endpoint when you need lightweight, pay-per-call keyword extraction without setting up your own NLP pipeline, especially in agent workflows where content tagging, SEO enrichment, or topic identification is needed on-the-fly at low cost ($0.05 per call).

## Known failure modes

- Empty or very short input text returns few or no keywords
- Malformed request body causes a 400 error
- Payment not attached or insufficient USDC balance results in 402 Payment Required
- Rate limiting or server error returns 500
- Non-English or unsupported language content may produce poor results

## How this service works

Agent Toolkit + AI Gateway + Alpha Scraper — 13 paid endpoints for AI agents.

## Output

Returns a list of extracted keywords or key phrases identified as most relevant within the submitted text, suitable for tagging, indexing, or downstream NLP tasks.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-tools-hub-extract-keywords-e1d67b4a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tools-hub-v4-xi.vercel.app](https://www.zero.xyz/host/tools-hub-v4-xi.vercel.app/llms.txt)