MCP servers

An MCP server connects an agent to external data and tools over a single protocol: files, databases, APIs and services. This section lists servers with their transport, auth method and environment variables, an install command and an honest read on the risks.

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Official

Supabase's official MCP server: the agent manages tables, reads project config and queries data after an OAuth login

MCP serverHigh risk2.9KRepository stars
Official

Translates scientific PDFs while keeping formulas, tables and layout intact, as a CLI, Docker image and MCP server for agents

MCP serverMedium risk37.2KRepository stars
Official

Long-term memory for agents: a remote MCP server, plugins for Claude Code, Cursor and Codex, and an API for your own apps

MCP serverMedium risk31KRepository stars
Official

MCP server and CLI for flight and hotel search and booking: hundreds of airlines, real prices, booking via a tool call

MCP serverHigh risk2.1KRepository stars
Official

Official Paddle Billing MCP server: catalog, customers, transactions, subscriptions and reports via your agent, with a filter for risky operations

MCP serverHigh risk51Repository stars

Frequently asked questions

What is an MCP server?

An MCP server connects an agent to external data and tools over a single protocol: files, databases, APIs and services. The agent calls its tools while it works.

How do I connect an MCP server to an agent?

The entry lists how to run it (npx, uvx, docker or a remote URL) and the environment variables. A config snippet goes into the agent settings.

Do I need a key or a paid account?

It depends on the server. Each entry states the auth method and requirements, including paid accounts, in the limitations block.