| name | web-reading |
| description | Read complex or JavaScript-rendered web pages cleanly. When a plain URL fetch returns an empty shell, garbled HTML, or "enable JavaScript", re-fetch the page through Jina Reader (https://r.jina.ai/) to get rendered, LLM-ready Markdown. Keyless, no setup. Use whenever a fetched page looks broken or you need the real article/body text. |
Web reading: get clean text from complex pages
Plain HTTP fetch tools (e.g. the fetch MCP tool) download the raw HTML and
strip tags. That fails on modern sites whose content is rendered by JavaScript
(SPAs, infinite-scroll, app-shell pages): the raw HTML is an empty shell, so
you get little or no real text.
Jina Reader (https://r.jina.ai/) renders the page in a real browser and
returns clean Markdown of the main content. It is keyless (anonymous, rate
limited) — no API key or config needed — so it works in any generated harness
that has a URL-fetching tool.
When to use this
Use Jina Reader whenever a normal fetch of a page returns any of:
- empty or near-empty body, or only nav/menu/footer boilerplate
- "Please enable JavaScript", a loading spinner, or an obvious app shell
- garbled / truncated content that doesn't match what the page clearly contains
- a long, content-heavy article you want as clean Markdown
How to use it
Prepend https://r.jina.ai/ to the original URL and fetch THAT with your
existing fetch / HTTP-GET tool:
https://r.jina.ai/https://example.com/some/article
For example, to read https://news.site/article/123, fetch
https://r.jina.ai/https://news.site/article/123. The result is rendered
Markdown of the page's main content.
Notes:
- Keep the original URL's scheme (
https://...) after the prefix.
- It is rate limited when keyless; if you hit a limit or a page is anti-bot
protected, say so and fall back to the plain fetch result rather than looping.
- If this harness has the
jina-reader MCP server enabled (with a JINA_API_KEY),
prefer its read_url tool instead — same engine, higher quota, more reliable.
