MCP Reference Servers: Controlled LLM Access to Files, Git, and Web Data
A set of MCP server examples for developers, giving LLMs controlled access to files, Git, and web tools—not production products.
GitHub modelcontextprotocol/servers Updated 2026-10-01 Branch main Stars 90.8K Forks 11.7K
TypeScript Python Model Context Protocol LLM tool access Claude Desktop Dockerfile

🧭 Decision Guide

Why trending now: The materials do not establish why it is trending now

Try it if you

  • You want to learn how MCP prompts, resources, and tools are implemented together
    The README's “Reference Servers” section defines Everything as a reference/test server containing prompts, resources, and tools
  • You want to connect Memory or Filesystem to Claude Desktop
    The README's “Using an MCP Client” section provides Claude Desktop configuration examples for memory and filesystem
  • Your MCP server uses the TypeScript or Python SDK
    The README lists the TypeScript MCP SDK and Python MCP SDK, and states that TypeScript servers use npx while Python servers use uvx or pip
  • You need an MCP example for Git, web fetching, or timezone functionality
    The README's reference-server list includes Git, Fetch, and Time and describes each capability

Skip it if you

  • You need an MCP server that can directly handle production traffic
    The README WARNING explicitly says these servers are reference implementations, not production-ready solutions
  • Your security requirements cannot be met with safeguards beyond the examples
    The README WARNING requires developers to implement safeguards based on their security requirements, threat model, and use case
  • You want a complete MCP server directory rather than a small set of official reference implementations
    The README IMPORTANT section says to browse the MCP Registry for a server list and says this repository contains only a small number of reference servers
  • You need the currently maintained version of an archived server
    The README's “Archived” section says AWS KB Retrieval, PostgreSQL, Puppeteer, and others moved to servers-archived

Requirements

  • TypeScript servers can be used directly with npx; the README example command for Memory is npx -y @modelcontextprotocol/server-memory.
  • Python servers can use uvx or pip; the README explicitly recommends uvx for easier installation and setup.
  • Servers should be configured into an MCP client; the README uses Claude Desktop's mcpServers configuration as an example.
  • On Windows, npx-based entries require cmd /c wrapping; the README says to change command to cmd and prepend /c and npx to args.

First step (verbatim from README)

npx -y @modelcontextprotocol/server-memory

Watch out

  • Do not treat the Memory npx example as a production deployment solution
    The README WARNING explicitly says the repository servers are not production-ready solutions
  • Filesystem access controls still require safeguards based on your threat model
    The README WARNING requires appropriate safeguards for the specific threat model and use case
  • The Git Python launch path requires choosing between uvx and pip
    The README's “Getting Started” section provides uvx mcp-server-git, pip install mcp-server-git, and python -m mcp_server_git
  • On Windows, do not copy the Linux command field unchanged for npx servers
    The README explicitly requires cmd /c wrapping for npx-based entries on Windows

Alternatives

  • MCP Registry：When you want to browse published MCP servers rather than use the repository's small set of reference servers
    README IMPORTANT section
  • Brave Search MCP Server：When you need the current official Brave Search server instead of the archived Brave Search reference server
    README Archived section
  • servers-archived：When you specifically need archived examples such as AWS KB Retrieval, PostgreSQL, or Puppeteer
    README Archived section

Not stated in the README

  • The README does not specify the MCP protocol versions or client compatibility matrix for each server.
  • The README does not provide performance, resource-consumption, or concurrency limits for Memory, Filesystem, or Git.
  • The README does not list test coverage or production incident history for each reference server.
  • The README does not specify the runtime versions corresponding to the TypeScript and Python examples.
  • The README does not provide complete implementation details for permission boundaries, data isolation, or auditing in each server.

💡 Deep Analysis

6
No I am prototyping MCP access to PostgreSQL, SQLite, or Redis and want all servers to be maintained uniformly by this repository. Can I directly depend on those connectors in the current repository?
For: A prototype developer seeking archived database connectors for PostgreSQL, SQLite, or Redis and expecting unified repository maintenance

No, not as a current-repository dependency, because the README explicitly says PostgreSQL, SQLite, and Redis have been archived and moved out of the active reference-server set.

  • The Archived section describes PostgreSQL as read-only database access, SQLite as database interaction, and Redis as key-value-store interaction, but all links point to servers-archived.
  • The README also says this repository contains only a small number of reference servers maintained by the MCP steering group, not a complete server directory.
  • For Brave Search and Slack, it further shows that some capabilities are now maintained by official servers or other maintainers, demonstrating that ownership can move.
  • The repository can still explain MCP reference patterns, but it cannot establish that these database connectors are currently published, updated, or uniformly supported here.
  • README Archived: PostgreSQL, SQLite, and Redis are listed among archived servers
  • README: "small number of reference servers maintained by the MCP steering group"
  • README Archived: Brave Search was replaced by an official server and Slack is maintained by Zencoder
  • README: "If you are looking for a list of MCP servers ... browse ... MCP Registry"
Not stated in the README：The README does not state whether archived servers still have installable packages, compatible versions, or security fixes.；It does not define maintenance SLAs or release policies for corresponding servers in the MCP Registry.
No We want to integrate the Filesystem, Git, and Memory servers into a multi-user internal environment, while the README mainly shows local client startup. Can this repository directly serve as our production foundation?
For: An enterprise data-prototyping team that needs MCP servers in a multi-user or remote environment rather than only as desktop processes

No, not directly, because the README explicitly labels these servers as reference implementations and requires users to add safeguards based on their threat model.

  • The README warns that they demonstrate SDK capabilities and are not production-ready solutions.
  • Filesystem’s allowed-directory boundary demonstrates scope control, but it does not replace multi-user authentication, tenant isolation, or auditing.
  • Project insights state that local-process startup is better suited to desktop or development environments; remote, multi-user, and containerized deployments need additional identity, isolation, network-control, and audit design.
  • The repository is therefore useful for protocol and integration prototypes, not as an enterprise-ready connector platform.
  • README WARNING: "not production-ready solutions"
  • README WARNING: "implement appropriate safeguards based on their specific threat model"
  • Project insights: remote, multi-user, and containerized environments need additional identity, isolation, network control, and auditing
  • Project insights: Filesystem demonstrates path scoping through allowed directories
Not stated in the README：The README does not define a multi-user identity model, tenant-isolation mechanism, or server-side audit format.；It provides no production SLA, rate-limiting design, failure-recovery guarantees, or long-term compatibility commitment.
Yes I use Python and local Git repositories and want to launch an MCP Git server with uvx or pip. Can this repository reduce installation and build work?
For: A developer maintaining a Python-based Git assistant service who needs client access to local Git repositories without manually building packages

Yes, because the README gives explicit uvx and pip launch paths for the Python Git server.

  • It states that Python servers can be used through uvx or pip, recommending uvx for easier setup.
  • The Git example supports reading, searching, and operating on Git repositories, matching your local-repository constraint.
  • The README includes the executable command uvx mcp-server-git and also shows pip installation followed by Python module execution.
  • It does not define behavior for different repository sizes, submodules, credentials, or write permissions, so those boundaries cannot be inferred from the README.
  • Getting Started: "Python-based servers ... can be used directly with uvx or pip"
  • Getting Started: "uvx is recommended for ease of use and setup"
  • Getting Started: Git server uvx, pip, and Python launch examples
  • Project insights: The Git server provides tools for reading, searching, and operating on Git repositories
uvx mcp-server-git
Not stated in the README：The README does not state the required Python version for the Git server.；It does not define the exact write-operation scope, credential handling, or large-repository performance.
Yes I use an MCP-capable client and want to connect local files, Git repositories, and web content from a Node.js environment. Can this repository help me prototype quickly?
For: An individual developer integrating local files, Git, and web capabilities into Claude or other MCP clients, with a Node.js environment for direct server startup

Yes, because the repository provides runnable reference servers for files, Git, and web content instead of requiring you to implement the MCP protocol from scratch.

  • The README defines the project as MCP reference implementations for demonstrating MCP features and SDK usage.
  • TypeScript servers can be launched directly with npx; the README includes a runnable Memory example.
  • The Filesystem server supports allowed-directory configuration, the Git server targets local repositories, and the Fetch server converts fetched web content for LLM use.
  • However, these are not production-ready components. Authentication, validation, and stronger authorization boundaries remain your responsibility.
  • README: "collection of reference implementations"
  • Getting Started: "TypeScript-based servers ... can be used directly with npx"
  • Project insights: Filesystem, Git, and Fetch servers cover local files, repositories, and web content
  • README: "not production-ready solutions"
npx -y @modelcontextprotocol/server-memory
Not stated in the README：The README does not specify the exact configuration format or compatibility versions of the target MCP client.；It does not define Fetch compatibility with particular websites, authenticated sessions, or anti-bot policies.
Yes I already use the TypeScript MCP SDK and want an officially maintained project to validate tools, resources, prompts, and client discovery. Is this repository suitable?
For: An application team maintaining a TypeScript MCP server and wanting to understand tools, resources, and prompts together

Yes, because the Everything server is specifically useful for examining MCP’s core capabilities in one reference implementation.

  • The README says servers are typically implemented with an MCP SDK and explicitly lists the TypeScript SDK, matching your stack.
  • Project insights state that Everything demonstrates prompts, resources, and tools together, making it useful for checking discovery, invocation, and context transfer.
  • Servers are organized as separate implementations, so protocol capabilities can be studied independently from other examples.
  • The repository is educational and referential rather than a complete conformance test suite; the README does not promise coverage of every lifecycle, error code, or cross-SDK behavior.
  • README: "Typically, each MCP server is implemented with an MCP SDK"
  • README: TypeScript MCP SDK is listed
  • Project insights: Everything demonstrates prompts, resources, and tools together
  • README: "intended as reference implementations ... not as production-ready solutions"
Not stated in the README：The README does not provide a complete MCP conformance test matrix.；It does not specify compatibility with your exact TypeScript SDK version.
It depends I need to compare MCP client interoperability across the TypeScript, Python, Go, and Rust SDKs. Can this repository serve as a complete cross-language compatibility test suite?
For: A protocol tester validating MCP client interoperability across TypeScript, Python, Go, and Rust SDK implementations

It depends, because the repository provides multilingual SDK references but does not claim to be a complete cross-language conformance suite.

  • The README lists C#, Go, Java, Kotlin, PHP, Python, Ruby, Rust, Swift, and TypeScript SDKs, which is useful for defining a comparison scope.
  • The actual project is primarily TypeScript and Python, with project data showing 490,686 and 100,153 bytes respectively; it does not provide a complete server set in every listed language.
  • Project insights note that SDK versions, runtime behavior, and individual server implementations can introduce compatibility differences.
  • It is therefore a useful source of reference cases and an interoperability starting point, but it cannot by itself cover every client, lifecycle, and error-handling combination.
  • README: C#, Go, Java, Kotlin, PHP, Python, Ruby, Rust, Swift, and TypeScript SDKs are listed
  • Project data: TypeScript 490686, Python 100153
  • Project insights: SDK versions, runtime characteristics, and server behavior can create cross-language differences
  • README: the project is positioned as reference implementations
Not stated in the README：The README provides no cross-language interoperability matrix or automated conformance results.；It does not specify SDK versions or shared test cases for each reference server.

✨ Highlights

  • Everything demonstrates MCP prompts, resources, and tools together
  • Filesystem provides file operations with configurable access controls
  • Git supports reading, searching, and manipulating Git repositories
  • TypeScript servers run with npx; Python servers use uvx or pip
  • The repository has 90,815 stars but only 10 contributors

🔧 Engineering

  • Memory provides knowledge-graph persistent memory and starts with npx
  • Fetch retrieves and converts web content for efficient LLM usage
  • Time handles time and timezone conversion; Sequential Thinking supports thought sequences

⚠️ Risks

  • The README explicitly states that these servers are not production-ready solutions
  • The README requires developers to implement safeguards for their own threat model
  • Servers such as AWS KB Retrieval have moved to servers-archived
  • Licensing is mixed: Apache-2.0 for new contributions and MIT for existing code

👥 For who?

  • Developers who need to learn MCP SDKs and server implementations
  • Individual developers connecting Memory or Filesystem to Claude Desktop
  • MCP integration teams needing TypeScript or Python reference code