10 MCP servers

MCP servers for Claude Code

Claude Code adds an MCP server with one command: claude mcp add. Run the command from a terminal; add --scope user if you want a server available in every project rather than just the current one. Hosted servers (marked with a URL below) use --transport http instead of a local process and open a browser tab for OAuth on first use.

All clients For Claude Code For Cursor

Context7

Live library docs, piped into your coding agent

claude mcp add context7 -- npx -y @upstash/context7-mcp

Works unauthenticated on a low rate limit. Add --api-key <key> (free, from context7.com/dashboard) for higher limits.

Supabase MCP

Query and migrate your database from the agent

claude mcp add supabase -e SUPABASE_ACCESS_TOKEN=<token> -- npx -y @supabase/mcp-server-supabase@latest --read-only --project-ref=<project-ref>

Needs a Supabase personal access token. Drop --read-only only once you actually want the agent applying migrations.

PostHog MCP

Ask your product analytics in plain English

claude mcp add --transport http posthog https://mcp.posthog.com/mcp

Hosted by PostHog. It asks for a PostHog personal API key the first time a tool call runs.

Brave Search MCP

Web, image, and news search results for an agent

claude mcp add brave-search -e BRAVE_API_KEY=<key> -- npx -y @brave/brave-search-mcp-server

Needs a Brave Search API key. Brave removed the always-free tier in 2026; a new key starts on metered billing.

Filesystem MCP

Give an agent read/write access to a real folder

claude mcp add filesystem -- npx -y @modelcontextprotocol/server-filesystem /path/to/allowed/directory

Every path you list becomes readable and writable by the agent. Only list directories you mean to hand over.

GitHub MCP Server

Issues, PRs, and repo search from inside the agent

claude mcp add github -e GITHUB_PERSONAL_ACCESS_TOKEN=<token> -- docker run -i --rm -e GITHUB_PERSONAL_ACCESS_TOKEN ghcr.io/github/github-mcp-server

Needs Docker running locally and a GitHub personal access token with repo scope.

Playwright MCP

Drive a real browser from the agent, no screenshots needed

claude mcp add playwright -- npx @playwright/mcp@latest

First run downloads a Chromium build via Playwright. No API key.

Postgres MCP Pro

Query plans, index tuning, and safe SQL for your database

claude mcp add postgres -e DATABASE_URI=<connection-string> -- uvx postgres-mcp --access-mode=restricted

Needs uv/uvx installed and a Postgres connection string. --access-mode=unrestricted allows writes; restricted is read-only.

Sentry MCP

Ask an agent to triage your error backlog

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

Hosted by Sentry. First use opens a browser tab for OAuth; no local process to run.

Slack MCP Server

Search and post to Slack from the agent, officially

claude mcp add --transport http slack https://mcp.slack.com/mcp

Hosted by Slack, GA since February 2026. A workspace admin has to approve the connection before it works.