Anthropic Official Dev tools

Everything

Demonstration server exercising every MCP primitive — tools, resources, prompts, sampling.

91,191 stars 11,782 forks Last commit 2d ago Language TypeScript License MIT
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Install

npm install -g @modelcontextprotocol/server-everything

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Show your README readers it's in a curated directory — and give them a one-click path to install docs and config.

Listed on Prismix ← links back here

Markdown

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Theme-aware version (auto dark/light on GitHub) →
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Claude Desktop / Cursor config

Drop into your claude_desktop_config.json or Cursor MCP settings. Replace the ${…} placeholders with your own values.

{
  "mcpServers": {
    "everything": {
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-everything"]
    }
  }
}

About

Reference server that touches every part of the protocol — tools, resources, prompts, sampling — designed for testing MCP-client implementations. Install when you're building your own client and need a known-good counterpart.

Recent releases (5)

All releases →
  • v1.0.0 Latest Oct 11, 2026
    ## Packages
    
    | Package | Version | Registry | In this release |
    | --- | --- | --- | --- |
    | `@modelcontextprotocol/server-everything` | `1.0.0` | npm | **published** |
    | `@modelcontextprotocol/server-filesystem` | `1.0.0` | npm | **published** |
    | `@modelcontextprotocol/server-memory` | `1.0.0` | npm | **published** |
    | `@modelcontextprotocol/server-sequential-thinking` | `1.0.0` | npm | **published** |
    | `mcp-server-fetch` | `2026.10.10` | PyPI | **published** |
    | `mcp-server-git` | `2026.10.10` | PyPI | **published** |
    | `mcp-server-time` | `2026.10.10` | PyPI | **published** |
    
    Release ledger: [v2/chore/5080-release-v1.0.0-sdk1](https://claude.ai/artifact/GP9jycCFtcYBaikubx3xwc)
    
    ## @modelcontextprotocol/server-everything 1.0.0
    
    ### What's Changed
    
    * fix(everything): clean up subscriptions on session disconnect by @arimu1 in https://github.com/modelcontextprotocol/servers/pull/4712
    * Agentic software factory Part 2: AGENTS.md, the absolute rules; delete CLAUDE.md by @cliffhall in https://github.com/modelcontextprotocol/servers/pull/4894
    * Agentic software factory Part 4: TypeScript workspace gate (Prettier, ESLint, root validate, CI) by @cliffhall in https://github.com/modelcontextprotocol/servers/pull/4896
    * feat: changesets for the TypeScript servers, GitHub-Release-triggered publishing by @cliffhall in https://github.com/modelcontextprotocol/servers/pull/4927
    * fix(everything): SSE reports a port already in use instead of "Server is running" by @cliffhall in https://github.com/modelcontextprotocol/servers/pull/4936
    * test(everything): protocol-level characterization suite and per-file 90% coverage gate by @cliffhall in https://github.com/modelcontextprotocol/servers/pull/4978
    * fix(everything): label dynamic blob resources application/octet-stream by @cliffhall in https://github.com/modelcontextprotocol/servers/pull/5005
    * fix(everything): answer unknown and duplicate HTTP+SSE sessions (#4981) by @cliffhall in https://github.com/modelcontextprotocol/servers/pull/5020
    * fix(everything): scope session resources to their server (#4808) by @cliffhall in https://github.com/modelcontextprotocol/servers/pull/5032
    * fix(everything): instructions qualify capability-gated tools; gate trigger-elicitation-request on form mode by @cliffhall in https://github.com/modelcontextprotocol/servers/pull/5034
    * fix(everything): keep async task tools within their client task (#4986, #4987) by @cliffhall in https://github.com/modelcontextprotocol/servers/pull/5014
    * fix(everything): Streamable HTTP 404 for unknown sessions, per-stream replay, shutdown closes sessions by @cliffhall in https://github.com/modelcontextprotocol/servers/pull/5006
    * chore(everything): keep compiled tests and vitest config out of the published package by @cliffhall in https://github.com/modelcontextprotocol/servers/pull/5053
    * v1.0.0: release audit for the SDK 1.x release branch by @cliffhall in https://github.com/modelcontextprotocol/servers/pull/5087
    * v1.0.0: fold pending changesets into a 1.0.0 CHANGELOG (release branch) by @cliffhall in https://github.com/modelcontextprotocol/servers/pull/5088
    * Release v1.0.0: merge v2/release/1.0.0 into main by @cliffhall in https://github.com/modelcontextprotocol/servers/pull/5090
    
    ## @modelcontextprotocol/server-filesystem 1.0.0
    
    ### What's Changed
    
    * fix: declare zod runtime dependencies by @he-yufeng in https://github.com/modelcontextprotocol/servers/pull/4289
    * Agentic software factory Part 4: TypeScript workspace gate (Prettier, ESLint, root validate, CI) by @cliffhall in https://github.com/modelcontextprotocol/servers/pull/4896
    * filesystem: fix unicode-paths tests on macOS by @cliffhall in https://github.com/modelcontextprotocol/servers/pull/4901
    * feat: changesets for the TypeScript servers, GitHub-Release-triggered publishing by @cliffhall in https://github.com/modelcontextprotocol/servers/pull/4927
    * test(filesystem): in-process characterization suite and per-file 90% coverag
    View on GitHub ↗
  • Release 2026.8.31 2026.8.31 Aug 31, 2026
    # Release : v2026.8.31
    
    ## Updated packages
    - @modelcontextprotocol/server-filesystem@2026.8.31
    - @modelcontextprotocol/server-memory@2026.8.31
    - @modelcontextprotocol/server-sequential-thinking@2026.8.31
    - @modelcontextprotocol/server-everything@2026.8.31
    
    View on GitHub ↗
  • Release 2026.8.18 2026.8.18 Aug 18, 2026
    # Release : v2026.8.18
    
    ## Updated packages
    - @modelcontextprotocol/server-everything@2026.8.18
    - mcp-server-time@2026.8.18
    - mcp-server-fetch@2026.8.18
    - mcp-server-git@2026.8.18
    
    View on GitHub ↗
  • Release 2026.7.10 2026.7.10 Jul 10, 2026
    # Release : v2026.7.10
    
    ## Updated packages
    - @modelcontextprotocol/server-filesystem@2026.7.10
    - mcp-server-time@2026.7.10
    - mcp-server-fetch@2026.7.10
    - mcp-server-git@2026.7.10
    
    View on GitHub ↗
  • Release 2026.7.4 2026.7.4 Jul 4, 2026
    # Release : v2026.7.4
    
    ## Updated packages
    - @modelcontextprotocol/server-everything@2026.7.4
    - @modelcontextprotocol/server-filesystem@2026.7.4
    - @modelcontextprotocol/server-sequential-thinking@2026.7.4
    - @modelcontextprotocol/server-memory@2026.7.4
    
    View on GitHub ↗

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