MCP server exposing the 4PDA forum lofi (text) version: forums tree, topics, posts.
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# 4PDA MCP MCP server exposing the [4PDA](https://4pda.to) forum **lofi (text) version** without a browser. Uses [`impit`](https://github.com/zimmski/impit) to pass Cloudflare's TLS challenge. ## Why lofi? The lofi/text version is ~50x smaller than the full page and has stable, simple markup — ideal for LLM consumption. The full version (`?act=idx`, `?showforum=`, `?showtopic=`) is JS-heavy and Cloudflare-gated. ## URL conventions (discovered) 4PDA changed the lofi entry. `lofiversion/index.php?index.html` now 404s. The live format is: - `lofiversion/index.php?f{forum_id}.html` — a forum page (subforums + topics list) - `lofiversion/index.php?t{topic_id}.html` — topic page 1 - `lofiversion/index.php?t{topic_id}-{offset}.html` — topic page N, step **20** - `index.php?act=idx` — full index, used only to enumerate top categories The pinned header post repeats on every topic page; this server drops it on page ≥ 2. ## Tools - `list_forums(forum_id?)` — top categories when `forum_id` omitted, else the subforums (and topics summary) of a forum as a flat list. Returns a tree the client can nest. - `list_topics(forum_id)` — topics in a forum: id, title, replies, is_important. - `list_posts(topic_id, page=1)` — posts on a page: author, date, html (with internal links rewritten to lofi where possible). Header post dropped on page ≥ 2. ## Run ```bash pip install -e . 4pda-mcp # stdio MCP server # or: mcp run src/fourpda_mcp/server.py ``` No browser, no auth needed (read-only public content). impit impersonates Chrome to clear Cloudflare. ## Rate limiting 4PDA fronts the lofi endpoint with Cloudflare; it is uncached, so every request hits origin and Cloudflare rate-limits it. The limit is not published; measured empirically (Aug 2026): | Request rate | Result | | ---------------------- | ---------------------------------------- | | 1 req / 2s | clean (10/10) | | 1 r…
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