Extract structured JSON from a webpage using Firecrawl v2 scrape with the json format and a schema

Documented steps

1. POST https://api.firecrawl.dev/v2/scrape with Authorization: Bearer <api key>
2. Body: 'url' plus formats: [{"type": "json", "schema": {<JSON Schema object>}}] — e.g. {"type":"object","properties":{"title":{"type":"string"},"price":{"type":"number"}},"required":["title"]}
3. Optionally combine with onlyMainContent (default true) to focus extraction on main content, and waitFor/timeout for JS-heavy pages
4. Read the extracted object from the json key of the response data field
5. Reference: https://docs.firecrawl.dev/api-reference/scrape