# Pulse402 News Search API

> Pulse402 News Search API is a paid API for AI agents from pulse402.6ynqsr8bxd.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Searches recent news articles by keyword query with tone, language, source, and country metadata, paid per-call via x402 micropayment protocol.

## Facts

- Endpoint: POST https://pulse402.6ynqsr8bxd.workers.dev/v1/news/search
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pulse402-news-search-api-6cf07cf1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_S2pgxM8jV5OLdQmKLVyQe

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 pulse402-news-search-api-6cf07cf1 -d '<json body>'
```

Example prompt: Search Pulse402 for the latest news about Nvidia from the past 24 hours and give me the article titles, sources, and tone for each result.

## When to prefer this

Choose this endpoint when you need machine-readable, structured news search results with source metadata (domain, language, country, tone) suitable for AI agent pipelines, and when you want micropayment-based access without API key subscription overhead. Prefer it over traditional news APIs when you need GDELT-backed global coverage or when operating in an x402 payment environment. It is especially useful for agents that need to search news on demand without committing to a subscription tier.

## Known failure modes

- Payment not processed or x402 handshake fails — request is rejected before search executes
- Query returns zero results if the topic has no indexed coverage in the requested time window
- Tone and country fields may be null for many results depending on GDELT data availability
- Invalid or missing query parameter causes a 400-level error
- Time window parameter not recognized — defaults or errors depending on implementation
- Service unavailability on the Cloudflare Workers host returns 5xx errors

## How this service works

Machine-readable paid news search and pulse intelligence over x402 v2.

## Output

A JSON object containing the search query, time window, and a list of news article results. Each result includes the article URL, title, publication timestamp, source domain, source name, language, country, and tone (when available). Also includes a result count, request ID, an as_of timestamp, and attribution to the underlying provider (GDELT Project).

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "as_of": "2026-09-01T04:02:00.000Z",
  "query": "nvidia",
  "window": "24h",
  "results": [
   {
    "url": "https://example.com/article",
    "tone": null,
    "title": "Example result title",
    "country": null,
    "language": "English",
    "source_name": null,
    "published_at": "2026-09-01T04:02:00.000Z",
    "source_domain": "example.com"
   }
  ],
  "request_id": "00000000-0000-4000-8000-000000000000",
  "attribution": {
   "provider": "GDELT Project (Static Web NGrams)"
  },
  "result_count": 1
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pulse402-news-search-api-6cf07cf1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pulse402.6ynqsr8bxd.workers.dev](https://www.zero.xyz/host/pulse402.6ynqsr8bxd.workers.dev/llms.txt)