The official collection of reference servers and example implementations maintained by the Model Context Protocol project.
MCP Servers
Connect agents to tools and data through the Model Context Protocol
An MCP server that connects agents to Chrome DevTools for page debugging, performance analysis, network inspection, and browser automation.
Lets agents navigate websites, read pages, and perform actions through structured browser interaction.
Serena is an open-source MCP toolkit for coding agents. It uses language servers or an optional JetBrains backend to provide symbol search, reference lookup, rename, and structured code editing, with official setup for Codex CLI and App.
A Python MCP application framework for building servers, clients, and interactive apps through one API, with stdio and Streamable HTTP transports.
Google's open-source database MCP server and custom-tool framework connects many databases to MCP clients while letting operators constrain agent actions through prebuilt or parameterized tools.
MCP Inspector is the official Model Context Protocol debugging tool. Its Web, CLI, and TUI clients connect to MCP servers and inspect tools, resources, prompts, transports, authentication, and MCP Apps.
A local tool server for desktop MCP clients, exposing file read/write and search, surgical edits, terminal commands, process management, and structured-data analysis over STDIO. Its broad host permissions require narrow directory scope and container or VM isolation for sensitive work.
An MCP server and standalone CLI that give coding agents access to Xcode builds, tests, simulators, devices, debugging, and UI automation.
Callstack's cross-platform app automation toolkit drives mobile, TV, web, and desktop apps through a stdio MCP server, CLI, and typed TypeScript API while collecting screenshots, logs, network, and performance evidence.
An official Grafana MCP server that lets compatible AI clients discover dashboards and data sources, query Prometheus metrics and Loki logs, and work with alerts, incidents, and OnCall flows within existing Grafana permissions, with read-only, query-free, and network-hardening controls.
A native Go MCP server that exposes Kubernetes and OpenShift resources, pod diagnostics, events, Helm operations, and optional ecosystem toolsets, with controls for read-only access, denied resources, and RBAC-scoped identities.
Azure DevOps MCP Server lets MCP-capable agents read and operate on Azure DevOps projects, work items, repositories, pipelines, test plans, wikis, and Advanced Security data.
Stripe MCP Server lets agents search Stripe documentation and manage customers, products, prices, payment links, invoices, refunds, subscriptions, and disputes within Restricted API Key permissions.
MongoDB's official MCP server for inspecting schemas, running queries, and assisting with database operations, including a read-only mode.
OpenAI's self-hosted client for connecting private or localhost MCP servers to ChatGPT, Codex, the Responses API, and AgentKit through Secure MCP Tunnel without exposing the MCP listener to the public internet.













