Best up-to-date docs for coding MCP server for Claude Code, tested

Dated results

• Context7 passed in Claude Code on 2026-10-20 (Claude Code 2.1.296, @upstash/context7-mcp 4.4.4, connected in 2.7s). Full result
• Microsoft Learn MCP passed in Claude Code on 2026-10-22 (Claude Code 2.1.296, mcp-remote 0.15.2, connected in 4.8s). Full result
• Svelte MCP passed in Claude Code on 2026-10-23 (Claude Code 2.1.296, @sveltejs/mcp 0.1.27, connected in 3.6s). Full result
• MDN MCP (experimental) passed in Claude Code on 2026-10-23 (Claude Code 2.1.296, mcp-remote 0.15.2, connected in 3.4s). Full result
• mcpdoc (LangChain) failed in Claude Code on 2026-10-15 (Claude Code 2.1.296, package version not recorded, connect time not recorded). Full result
• Docfork failed in Claude Code on 2026-10-15 (Claude Code 2.1.296, server reported v2.2.5, connect time not recorded). Full result

Why Context7 is the candidate

Context7 passed every step in Claude Code. It is the group’s site-wide candidate (judged 2026-10-20): Found React's library ID and looked up Vite's default dev-server port (5173) in its docs, in both Claude Code and Cursor (6 calls in total), and it passed its library-ID task in ChatGPT (Codex) on Oct 15 (the Vite task hasn't run there yet). No runner-up: Docfork's search failed on every call ('fetch failed': its docs API didn't respond on Oct 15; the repo is archived), and mcpdoc failed to start in both clients. Confirmed Oct 20, 2026: a second run in Claude Code and Cursor passed both tasks again (Context7 4.4.4).

Provisional: based on one dated run per app (no repeat runs yet), so treat it as a candidate, not a final pick. How we test.

What failed or is partial in Claude Code

• mcpdoc (LangChain): failed on 2026-10-15. Recorded reason: no successful call to this server's tools; answer missing ['5173']; no tool result containing ['5173']
• Docfork: failed on 2026-10-15. Recorded reason: no successful call to this server's tools; answer missing ['5173']; no tool result containing ['5173']

Install in Claude Code

The exact snippet we tested is on the Context7 page (pick the Claude Code tab). Not connecting? Claude Code MCP troubleshooting.

Not tested in Claude Code yet

Ref (docs search MCP), Laravel Boost, pg-aiguide (Timescale), Next.js DevTools MCP, 21st.dev Magic MCP, Grounded Docs MCP Server, xmcp. Listed from their source; no result in Claude Code yet.

Questions

What is the best up-to-date docs for coding MCP server for Claude Code?

In ToolPassed's hands-on tests in Claude Code, Context7 is our provisional candidate for up-to-date docs for coding: it passed install, connect, tools and an agent task on 2026-10-20. We ran 6 up-to-date docs for coding MCP servers in Claude Code; 4 passed every step; not a pass: mcpdoc (LangChain) (failed), Docfork (failed).

Does Context7 work with Claude Code?

Context7 passed in Claude Code on 2026-10-20 (Claude Code 2.1.296, @upstash/context7-mcp 4.4.4, connected in 2.7s).

Does mcpdoc (LangChain) work with Claude Code?

No, not in our test: mcpdoc (LangChain) failed in Claude Code on 2026-10-15 (Claude Code 2.1.296, package version not recorded, connect time not recorded). Recorded reason: no successful call to this server's tools; answer missing ['5173']; no tool result containing ['5173']

Does Docfork work with Claude Code?

No, not in our test: Docfork failed in Claude Code on 2026-10-15 (Claude Code 2.1.296, server reported v2.2.5, connect time not recorded). Recorded reason: no successful call to this server's tools; answer missing ['5173']; no tool result containing ['5173']