# agentshelf.syntexa.ch Extract Meta Tags

> agentshelf.syntexa.ch Extract Meta Tags is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).

Extracts all key metadata from a public web page including title, description, canonical URL, robots directives, Open Graph tags, Twitter Card tags, and favicons

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/extract-meta?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-syntexa-ch-extract-meta-tags-8afd1399
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_orhPoQzf9W1VM_cBE8bvo

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 agentshelf-syntexa-ch-extract-meta-tags-8afd1399 -d '<json body>'
```

Example prompt: Can you pull all the meta tags from https://example.com — I need the title, description, canonical URL, Open Graph tags, Twitter Card tags, and any icons the page has?

## When to prefer this

Use this endpoint when you need a comprehensive snapshot of all head metadata from a single public URL in one call — covering SEO, social preview (OG + Twitter), robots, canonical, and icons simultaneously. It is more efficient than calling individual sibling endpoints (e.g. og:title-only or description-only extractors) when you need multiple tag types at once. Prefer the free sandbox variant (/v1/sandbox/extract-meta) for development or low-volume use; use this paid endpoint for production workloads where reliability matters. Best suited for SEO auditing, link preview generation, brand research, and content enrichment pipelines.

## Known failure modes

- URL is not publicly accessible or returns a non-200 status — partial or empty result
- SSRF-blocked URL (private IP ranges, localhost) — rejected with error
- Malformed or missing URL input — validation error
- Page uses JavaScript rendering and meta tags are injected client-side — static tags only returned
- Network timeout fetching the target page — timeout error
- Page has no meta tags — empty fields returned with just the title

## How this service works

Call when an agent needs title, description, canonical, robots, og:*, twitter:*, and icons[] from a public page. SSRF-safe. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/extract-meta first.

## Output

Returns a structured object containing: page title, meta description, canonical URL, robots directives, full set of og:* Open Graph properties (og:title, og:description, og:image, og:url, og:type, etc.), twitter:* Twitter Card properties, and an array of icon/favicon URLs found in the page head.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "examples": [
    "https://example.com/"
   ],
   "maxLength": 2048,
   "minLength": 8,
   "description": "Public http(s) URL to fetch. Private, localhost, link-local, and metadata hosts are rejected."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentshelf-syntexa-ch-extract-meta-tags-8afd1399/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentshelf.syntexa.ch](https://www.zero.xyz/host/agentshelf.syntexa.ch/llms.txt)