# Services from circadian-agent.com on Zero

> circadian-agent.com serves 3 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/circadian-agent.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/circadian-agent.com/health.json

## Services

- [Circadian Web Page Extractor](https://www.zero.xyz/c/circadian-web-page-extractor-9abe9fb3/llms.txt): $0.01/call via x402. Fetches a public URL and returns its title, full markdown text, word count, and extracted links for agent consumption.
- [Circadian AI Brief API](https://www.zero.xyz/c/circadian-ai-brief-api-db306b1e/llms.txt): $3/call via x402. Submits a research topic to an autonomous AI agent for a comprehensive brief, delivered asynchronously within 36 hours
- [Circadian Web Page Metadata Inspector](https://www.zero.xyz/c/circadian-web-page-metadata-inspector-5565462e/llms.txt): $0.005/call via x402. Fetches and returns structured metadata (title, language, OpenGraph, Twitter cards, feeds, icons) for any public URL

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)