How to scrape JavaScript-rendered pages so your agent sees the content
A plain HTTP GET often gets the empty shell. Your agent needs the page after JavaScript runs — then only the fields it asked for, not the DOM.
If your coding agent fetches a JavaScript-heavy page and sees an empty shell, the fetch never ran the page's scripts. Browserless and similar APIs solve that by returning the rendered HTML. That still leaves the agent to parse a blob.
Plainscrape runs the render for you, then extracts the answer. You send a URL and a plain-language instruction; you get structured JSON. Rendering is included in the page price. A page that fails or is blocked is not billed.
What this is not
- Not a “return the full rendered HTML” API. If you need the DOM, a browser service is the better fit.
- Not a guarantee that every bot-gated site will yield. Failed fetches stay free.
- Residential proxying (
use_proxy: true) is available for sites that block datacentre IPs, but does not guarantee access to every heavily-gated site.
Try it on a public listing: playground, or from Cursor via MCP.
FAQ
Plainscrape renders JavaScript-heavy pages for you. You still ask in plain language and get structured JSON — not the rendered HTML dump for your agent to parse.
Point Plainscrape at the URL and describe the fields. Rendering is included in the page price. A page that fails or is blocked is not billed.
Only the structured answer. CSV and markdown output are on the docs roadmap; today the API returns JSON.
No. Failed and blocked pages are always free. You are billed for pages actually fetched.