Metadata Extraction

Get a page's metadata: Open Graph, Twitter Card tags, JSON-LD, favicon, canonical URL, RSS feeds and robots directives.

Pay by wallet (x402) meta-extract

Example

Input

{
  "url": "https://strale.dev"
}

Answer

{
  "og": {
    "url": null,
    "type": "website",
    "image": "https://pub-bb2e103a32db4e198524a2e9ed8f35b4.r2.dev/40c97463-fb0c-4144-aa8c-9db65573a574/id-preview-5c2a5484--51ddd28d-009f-48ba-9c99-c76ee3e05d53.lovable.app-1772307174433.png",
    "title": "Strale — Ship AI agents faster",
    "site_name": null,
    "description": "Your agent calls strale.do() and gets company data, compliance checks, financial validation — structured JSON with audit trails. 233+ capabilities, one API key."
  },
  "url": "https://strale.dev",
  "feeds": [],
  "title": "Strale — Ship AI agents faster",
  "robots": null,
  "favicon": "https://strale.dev/favicon.ico",
  "json_ld": [
    {
      "url": "https://strale.dev",
      "name": "Strale",
      "@type": "SoftwareApplication",
      "author": {
        "url": "https://strale.dev",
        "name": "Strale",
        "@type": "Organization"
      },
      "offers": {
        "@type": "Offer",
        "price": "0",
        "description": "Free trial with €2.00 in credits",
        "priceCurrency": "EUR"
      },
      "@context": "https://schema.org",
      "description": "Your agent calls strale.do() and gets company data, compliance checks, financial validation — structured JSON with audit trails. 233+ capabilities, one API key.",
      "operatingSystem": "Any",
      "applicationCategory": "DeveloperApplication"
    }
  ],
  "twitter": {
    "card": "summary_large_image",
    "site": null,
    "image": "https://pub-bb2e103a32db4e198524a2e9ed8f35b4.r2.dev/40c97463-fb0c-4144-aa8c-9db65573a574/id-preview-5c2a5484--51ddd28d-009f-48ba-9c99-c76ee3e05d53.lovable.app-1772307174433.png",
    "title": "Strale — Ship AI agents faster",
    "creator": null,
    "description": "Your agent calls strale.do() and gets company data, compliance checks, financial validation — structured JSON with audit trails. 233+ capabilities, one API key."
  },
  "language": "en",
  "description": "Your agent calls strale.do() and gets company data, compliance checks, financial validation — structured JSON with audit trails. 233+ capabilities, one API key.",
  "canonical_url": null
}

Inputs

Field	Type	Required	What it is
`url`	string	Yes	URL to extract metadata from

Output fields

How reliably each field appears in a successful answer.

Field	Type	Appears
`og`	object	Always (present in every successful answer)
`feeds`	array	Always (present in every successful answer)
`title`	string	Always (present in every successful answer)
`json_ld`	array	Always (present in every successful answer)
`twitter`	object	Always (present in every successful answer)
`description`	string	Always (present in every successful answer)

How to call it

The same tool through each route. MCP clients reach it through Strale’s server at https://api.strale.io/mcp; the call below is what the agent sends.

# Needs an API key. max_price_cents caps what this call may cost.
curl -X POST https://api.strale.io/v1/do \
  -H "Authorization: Bearer $STRALE_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
    "capability_slug": "meta-extract",
    "inputs": {
      "url": "https://strale.dev"
    },
    "max_price_cents": 3
  }'

{
  "tool": "strale_execute",
  "arguments": {
    "slug": "meta-extract",
    "inputs": {
      "url": "https://strale.dev"
    },
    "max_price_cents": 3
  }
}

import { Strale } from "straleio";

const strale = new Strale({ apiKey: process.env.STRALE_API_KEY! });
const result = await strale.do({
  capability_slug: "meta-extract",
  inputs: {
    "url": "https://strale.dev"
  },
  max_price_cents: 3,
});

import os
from straleio import Strale, DoRequest

strale = Strale(api_key=os.environ["STRALE_API_KEY"])
result = strale.do(DoRequest(
    capability_slug="meta-extract",
    inputs={
        "url": "https://strale.dev",
    },
    max_price_cents=3,
))

# No account. The first request answers 402 with the price in USDC;
# an x402 client pays it from your wallet and repeats the request.
curl -i 'https://api.strale.io/x402/v2/meta-extract?url=https%3A%2F%2Fstrale.dev'

Limitations

JavaScript-generated meta tags are not captured
Extracts meta tags from the initial HTML response — dynamically injected meta tags via JavaScript are not captured
What to do instead: Inspect the page in a browser for meta tags added by JavaScript.
Pages are limited to 16 MiB of HTML
Pages with more than 16 MiB of HTML are refused with a caller_input error naming the input field. The call is not charged, and the page is not retried through another fetch or rendering route.

Bundled checks that include it

Competitor Read €0.20
Page SEO Check €0.30