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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Found: 786

An MCP server and CLI that build a knowledge graph of a monorepo and let an agent query, understand and edit multi-language code

Medium risk5.2KRepository stars

A self-hosted MCP server that gives ChatGPT and other clients access to code on your machine: read, edit, search and run commands

High risk5.2KRepository stars

Agentgateway

agentgateway

Official

A proxy for agentic traffic: routes and secures connections to MCP servers, LLMs, and other agents over A2A

High risk5.1KRepository stars
Official

A desktop SQL workspace with a built-in MCP server: the agent reads the schema and runs queries in the same client you already use

High risk5.1KRepository stars
Official

A lightweight database workspace with an MCP server: the agent reads the schema, runs queries and explores data in PostgreSQL, MySQL and more

High risk5KRepository stars

An MCP server for Home Assistant: the agent reads smart-home state and controls devices through your instance

High risk4.9KRepository stars

An MCP server for market data and technical analysis: quotes, indicators, screeners and backtesting for stocks, crypto, forex and futures

Medium risk4.8KRepository stars
Official

Official local MCP server for the Notion API: search, read and edit pages as Markdown, and work with databases

High risk4.7KRepository stars
Official

Instant REST and MCP over PostgreSQL: the agent reads an existing database through an MCP endpoint with no backend to write

Medium risk4.6KRepository stars

An IBM gateway and registry that federates MCP servers, A2A agents and REST or gRPC APIs behind one endpoint with auth and observability

High risk4.5KRepository stars

An MCP memory server for agents built on a knowledge graph: relevance as an evidence path, not just vector similarity

Medium risk4.5KRepository stars

An MCP server for an Obsidian vault via the Local REST API plugin: search, read, append and patch notes

Medium risk4.5KRepository stars
Official

An MCP server from AntV for generating charts and diagrams: 25+ visualization types, from lines and bars to maps, mind maps and network graphs

Medium risk4.4KRepository stars

A Unity plugin with an MCP server, skills and CLI: the agent drives scenes, assets, scripts and tests in the Unity Editor

High risk4.4KRepository stars

MCP server for spec-driven development: requirements, design and tasks step by step, with a web dashboard and a VS Code extension

Medium risk4.3KRepository stars
Official

A local-first workflow engine in a single binary with a built-in MCP server so an agent can inspect and run jobs

High risk4.2KRepository stars

Long-term agent memory in local Markdown files with a link graph, semantic search and MCP access

Medium risk4.1KRepository stars

An MCP server for the Ghidra disassembler: hundreds of tools for reverse engineering, decompilation, renaming, structures, emulation and debugging

High risk4.1KRepository stars
Official

A Dagger MCP server that gives each agent its own container and git branch for safe parallel work

Medium risk4KRepository stars
Official

A WSL distro manager with a GUI and an MCP server so an agent can manage distros and run commands inside them

High risk4KRepository stars
Official

An MCP and CLI that let an agent control your real Chrome, with its own logins and extensions, through Playwright

High risk3.9KRepository stars
Official

An MCP server for long-term agent memory: compresses dialogues into atomic facts, resolves pronouns and anchors relative time to absolute dates

Medium risk3.8KRepository stars

An MCP server that inserts a human feedback step into agent tasks: a web or desktop window for text, images and prompts

Medium risk3.8KRepository stars
Official

An open-source Kubernetes UI with a built-in MCP server: the agent inspects the cluster, diagnoses breakages and operates it with RBAC in mind

High risk3.5KRepository 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.