# Multi-Source News Sentiment Timeline

> Multi-Source News Sentiment Timeline is a paid API for AI agents from x402.professorsausages.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).

Returns volume of matching news headlines bucketed by hour or day, plus average GDELT sentiment score per bucket, forming a local sentiment timeline

## Facts

- Endpoint: POST https://x402.professorsausages.com/news/timeline
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/multi-source-news-sentiment-timeline-ee0e825f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YVRL-jciObMrLjnRXty2w

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 multi-source-news-sentiment-timeline-ee0e825f -d '<json body>'
```

Example prompt: Can you pull up the news headline volume and GDELT sentiment scores for 'OpenAI' bucketed by day over the last two weeks so I can see how coverage has shifted?

## When to prefer this

Use this endpoint when you need a temporal view of news coverage — combining both volume (how many headlines) and sentiment (how positive or negative) in time buckets. Prefer it over simple headline search when the goal is trend analysis, media intensity tracking, or sentiment shift detection over time rather than retrieving individual articles.

## Known failure modes

- No headlines found for the query — returns empty buckets or zero counts
- Invalid or missing query parameter — likely a 400 bad request or empty response
- Date range too large or unsupported bucket size — may return an error or truncated results
- GDELT data unavailability for a time window — sentiment values may be null or missing for some buckets
- Payment failure (x402) — 402 response if USDC payment is not processed correctly

## Output

A time series array of buckets (hour or day granularity), each containing the count of matching headlines and the average GDELT sentiment score for that bucket, enabling trend and intensity analysis of news coverage for a given topic.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/multi-source-news-sentiment-timeline-ee0e825f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.professorsausages.com](https://www.zero.xyz/host/x402.professorsausages.com/llms.txt)