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docs(mcp): fix #1 install failure — uv onboarding + troubleshooting + 1-click deeplinks - #35

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mavxdegods wants to merge 2 commits into
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fix/mcp-install-uv-onboarding
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mavxdegods wants to merge 2 commits into
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fix/mcp-install-uv-onboarding

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Why

Users report "MCP server failed to connect." Root cause confirmed by reproduction: the config runs uvx gen-mcp-server, but uvx (uv) isn't installed on the user's machine, so the client can't spawn it → surfaces as a connect failure. The package itself is healthy (clean stdout, valid initialize handshake).

What changed (guides/claude-code.mdx)

  • Quick Install leads with installing uv (mac/Linux/Windows/brew), then "open a new terminal" so it's on PATH.
  • "first launch ~30s" note — avoids first-run connect timeouts.
  • pip/pipx fallback promoted to a first-class no-uvx path (command: "gen-mcp-server").
  • Troubleshooting section keyed to the exact failed/cannot connect error: uvx --version check, a copy-paste manual handshake test, and the pip escape hatch.
  • One-click install for the top 3 clients: Claude Code (CLI), Cursor + VS Code (verified deeplink formats).
  • Capability summary block (products / transport / access / auth / tools).

Verification

  • npm run build green (65 pages) on a tree synced to origin/main.
  • Deeplinks generated per Cursor + VS Code official deeplink specs and confirmed in built HTML.

🤖 Generated with Claude Code

NEOxplus and others added 2 commits June 22, 2026 05:21
…oting + 1-click deeplinks

People hit "MCP server failed to connect"; root cause is uvx not installed.
- Quick Install now leads with the cross-platform `uv` install command
- "first launch ~30s" note (avoids connect timeout on first run)
- pip/pipx fallback elevated to a first-class no-uvx path
- Troubleshooting section keyed to the exact "cannot/failed to connect" error
  (uvx --version check, manual handshake test, pip escape hatch)
- One-click install for the top 3: Claude Code (CLI), Cursor + VS Code (verified deeplinks)
- Capability summary block (products / transport / access / auth / tools)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
llms.txt is what AI clients read. It now carries an explicit self-heal recipe
so when the gen MCP "fails to connect", the agent knows the cause (uv/uvx not
installed) and the exact fix — install uv, pre-download, manual handshake test,
or the pip no-uvx escape hatch — without a human in the loop.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

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2 participants