# Basebuilder2 Search - Extract Keywords

> Basebuilder2 Search - Extract Keywords is a paid API for AI agents from bbx-search.vercel.app, paid per call via x402, $0.05205/call, status unknown (last checked 2026-10-10).

Extracts keywords from text or content using the BaseBuilder Search API hub

## Facts

- Endpoint: POST https://bbx-search.vercel.app/api/extract-keywords?utm_source=zero.xyz
- Price: $0.05205/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/basebuilder2-search-extract-keywords-d5bd209e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hH0iGu0v4xKWSgn_gg9ui

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 basebuilder2-search-extract-keywords-d5bd209e -d '<json body>'
```

Example prompt: Can you extract the main keywords from this article text so I can use them for search tagging: 'Renewable energy sources like solar and wind power are transforming how we generate electricity, reducing reliance on fossil fuels and lowering carbon emissions globally.'

## When to prefer this

Choose this endpoint when you need to programmatically extract searchable or meaningful keywords from raw text content, especially within a paid API workflow using x402 micropayments. Useful for SEO tagging, search indexing, content categorization, or NLP preprocessing pipelines where keyword identification is a discrete step.

## Known failure modes

- Empty or missing input text returns an error or empty keyword list
- Very short input (single word) may yield minimal or no useful keywords
- Malformed request body may return a 400 Bad Request error
- Payment not included or insufficient USDC results in a 402 Payment Required response
- Rate limiting or server overload may cause timeouts or 503 errors

## How this service works

BaseBuilder Search API hub - 18 paid endpoints

## Output

Returns a list of extracted keywords and key phrases identified from the input text, representing the most semantically significant terms for search, tagging, or indexing purposes.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/basebuilder2-search-extract-keywords-d5bd209e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bbx-search.vercel.app](https://www.zero.xyz/host/bbx-search.vercel.app/llms.txt)