Best MCP servers for Claude Code (2026): only ones we verified live

Cross-checked against official docs and live curl reachability.

Our bar: primary sources + live checks

Listed only if (1) documented in Anthropic's official help/docs, and (2) reachable via a real curl from this Mac. We haven't verified full post-auth behavior — check that yourself.

Sentry (error monitoring)

From official help text. `curl https://mcp.sentry.dev/mcp` returned 401 (auth required) — confirmed live.

$ claude mcp add --transport http sentry https://mcp.sentry.dev/mcp

GitHub (code & PRs)

Listed in Anthropic's connector directory per official docs; a GitHub Copilot MCP endpoint also returned 401 on curl from this Mac.

Notion (docs search & edits)

Official Notion MCP server at `https://mcp.notion.com/mcp` — confirmed reachable (401) from this Mac.

$ claude mcp add --transport http notion https://mcp.notion.com/mcp

Linear (issue tracking)

Per Linear's own docs. Confirmed reachable (401) from this Mac.

$ claude mcp add --transport http linear-server https://mcp.linear.app/mcp

Before you connect

All of these require auth. Decide how much access to grant, and remember `claude mcp remove` if you stop using one.

FAQ

What's the selection bar?

Documented officially, and confirmed reachable via a live curl from this Mac.

Isn't a 401 a bad sign?

No — it's the correct response when unauthenticated, proving the server is alive.

What's the common connect command?

`claude mcp add --transport http <name> <url>`, then authenticate (e.g. OAuth) as needed.

What if I stop using one?

Remove it with `claude mcp remove <name>`.

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