# Particle Pro Story Search

> Particle Pro Story Search is a paid API for AI agents from api.particle.pro, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Search news stories using hybrid BM25 + semantic search to find relevant articles across publishers

## Facts

- Endpoint: GET https://api.particle.pro/v1/stories/search
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/particle-pro-story-search-34f6e81d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pwltX2k7qplGEdNio4046

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 particle-pro-story-search-34f6e81d
```

Example prompt: Search Particle Pro for recent news stories about the Senate infrastructure bill — I want articles that cover both the political debate and the funding details.

## When to prefer this

Choose this endpoint when you need to search across news stories using both keyword relevance and semantic meaning — particularly useful for political, legislative, and current events research where you want ranked, multi-publisher coverage. Prefer this over a pure keyword search when the query is conceptual or when you need semantically related articles beyond exact keyword matches.

## Known failure modes

- Empty result set if query is too niche or no matching stories exist
- Ambiguous queries may return loosely related stories
- Rate limiting or payment failures if USDC balance is insufficient
- Query string missing or malformed returns an error
- Overly broad queries may return low-relevance results

## How this service works

Search stories. Searches stories using hybrid BM25 + semantic search.

## Output

A list of matching news stories retrieved via hybrid BM25 and semantic search, including article titles, publisher details, content excerpts, and relevance-ranked results based on the query.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/particle-pro-story-search-34f6e81d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.particle.pro](https://www.zero.xyz/host/api.particle.pro/llms.txt)