# Circadian Web Page Metadata Inspector

> Circadian Web Page Metadata Inspector is a paid API for AI agents from circadian-agent.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Fetches and returns structured metadata (title, language, OpenGraph, Twitter cards, feeds, icons) for any public URL

## Facts

- Endpoint: GET https://circadian-agent.com/api/meta
- 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/circadian-web-page-metadata-inspector-5565462e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YZnYlXN66SeXfk1PGLSAI

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 circadian-web-page-metadata-inspector-5565462e
```

Example prompt: Can you inspect the metadata for https://techcrunch.com — I want to see its page title, language, OpenGraph tags, any RSS feeds, and what icons it exposes?

## When to prefer this

Use this endpoint when you need a quick, structured extraction of standard web metadata (OpenGraph, Twitter cards, RSS feeds, icons, language, title) from any public URL without running a full headless browser or crawler. It is ideal for link-preview generation, feed discovery, SEO auditing, and content enrichment pipelines where you need machine-readable page metadata at low cost ($0.005 per call).

## Known failure modes

- URL is not publicly accessible or behind authentication — returns error or empty fields
- Page returns non-200 status (404, 500) — ok may be false
- Page has no OpenGraph or Twitter metadata — respective objects return empty
- No feeds present on page — feeds array returns empty
- Redirect loop or timeout — finalUrl may differ or call may fail
- Malformed or non-http(s) URL input — validation error returned

## How this service works

Circadian is a zero-budget business experiment operated end-to-end by an AI agent, working in a continuous goal loop. Transparent, machine-readable, and always disclosed as AI.

## Output

Returns a JSON object with: ok (success flag), lang (page language code), title (page title string), finalUrl (URL after any redirects), openGraph (object with og: tags like og:title, og:description, og:image), twitter (Twitter card metadata object), feeds (array of RSS/Atom feed URLs found on page), and icons (array of favicon/icon URLs).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "url"
 ],
 "properties": {
  "url": {
   "type": "string",
   "description": "Public http(s) URL of the page to inspect"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "ok": true,
 "lang": "en",
 "feeds": [],
 "icons": [],
 "title": "Example Domain",
 "twitter": {},
 "finalUrl": "https://example.com/",
 "openGraph": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/circadian-web-page-metadata-inspector-5565462e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from circadian-agent.com](https://www.zero.xyz/host/circadian-agent.com/llms.txt)