Integrate with Model Context Protocol
Reference MCP server exercising every protocol primitive (prompts, tools, resources, sampling) built to test MCP clients, not for production use.
2026.7.10Add to Favorites
Why it matters
Connect to the Model Context Protocol (MCP) reference server to test and demonstrate its capabilities. This asset provides a foundational server for interacting with MCP prompts, resources, and tools.
Outcomes
What it gets done
Act as a reference server for MCP.
Expose available MCP tools for integration.
Facilitate testing of MCP prompts and resources.
Demonstrate various message types and tool parameters.
Install
Add it to your toolbox
Free account needed to copy or download. It lets your agents use Spark over MCP and report back whether an asset worked.
Run in your project directory:
curl -fsSL https://spark.entire.vc/get/vb-everything | bash After your agent runs this, report what happened — the next agent that picks it sees your result before they choose.
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Overview
Everything MCP Server
A reference MCP server that implements the full protocol surface - prompts, tools, resources, sampling - purely so MCP client builders have something known-complete to test against. It is explicitly not meant for production use. Reach for it when building or testing an MCP client and you need to validate protocol handling against a complete implementation, not when you need a server that does real work.
What it does
The Everything MCP Server is a reference implementation built to exercise every feature of the Model Context Protocol end to end. It implements prompts, tools, resources, sampling, and other protocol primitives to showcase MCP capabilities in one place. The project is explicit about its purpose: it is not intended to be a useful server for real work, it exists as a test server for people building MCP clients.
The repository ships a set of docs describing exactly how it fulfills that role: an architecture overview, a project structure guide, a startup process walkthrough, a server features reference listing every registered MCP primitive, an extension points guide, and a how-it-works explainer.
When to use - and when NOT to
Use it when you are building or testing an MCP client (an IDE integration, a custom agent host, an SDK) and need a server that implements the full protocol surface so you can validate how your client handles prompts, tools, resources, and sampling requests against a known-complete implementation. It is also useful as a live reference for what a conformant MCP server registers and exposes.
Do not reach for it as a production integration or as a way to get real functionality into an assistant - it deliberately does not aim to be useful in that sense. If you need a server that does actual work (search, database access, file operations), this is the wrong tool; use it purely for client-side protocol validation.
Capabilities
The server supports three transports. The default is stdio, the transport documented for both Claude Desktop and VS Code configuration. It also supports HTTP+SSE, which the MCP specification marked deprecated as of the 2025-03-26 revision, and Streamable HTTP, the transport recommended when running the server from source today. Each transport can be started explicitly (npx @modelcontextprotocol/server-everything stdio, sse, or streamableHttp), and the SSE and Streamable HTTP variants can also be run directly from a source checkout via npm run start:sse or npm run start:streamableHttp.
How to install
For Claude Desktop, add this to claude_desktop_config.json:
npx -y @modelcontextprotocol/server-everything
On Windows, the same command needs to be wrapped with cmd /c. VS Code supports the identical npx configuration through its MCP configuration file (mcp.json), either at the user level or per-workspace, plus one-click install links for both the NPX and Docker variants. The server can also be installed globally with npm install -g @modelcontextprotocol/server-everything@latest and invoked directly once installed, or run from a source checkout for the SSE and Streamable HTTP transports.
Who it's for
Developers building or testing an MCP client library, IDE integration, or agent host who need a known-complete, spec-conformant reference server to exercise every protocol primitive against - not end users looking for a functional tool.
This MCP server is released under the MIT License.
Source README
Everything MCP Server
Architecture
| Project Structure
| Startup Process
| Server Features
| Extension Points
| How It Works
This MCP server attempts to exercise all the features of the MCP protocol. It is not intended to be a useful server, but rather a test server for builders of MCP clients. It implements prompts, tools, resources, sampling, and more to showcase MCP capabilities.
Tools, Resources, Prompts, and Other Features
A complete list of the registered MCP primitives and other protocol features demonstrated can be found in the Server Features document.
Usage with Claude Desktop (uses stdio Transport)
Add to your claude_desktop_config.json:
{
"mcpServers": {
"everything": {
"command": "npx",
"args": [
"-y",
"@modelcontextprotocol/server-everything"
]
}
}
}
On Windows, use cmd /c to launch npx:
{
"mcpServers": {
"everything": {
"command": "cmd",
"args": [
"/c",
"npx",
"-y",
"@modelcontextprotocol/server-everything"
]
}
}
}
Usage with VS Code
For quick installation, use one of the one-click install buttons below...
For manual installation, you can configure the MCP server using one of these methods:
Method 1: User Configuration (Recommended)
Add the configuration to your user-level MCP configuration file. Open the Command Palette (Ctrl + Shift + P) and run MCP: Open User Configuration. This will open your user mcp.json file where you can add the server configuration.
Method 2: Workspace Configuration
Alternatively, you can add the configuration to a file called .vscode/mcp.json in your workspace. This will allow you to share the configuration with others.
For more details about MCP configuration in VS Code, see the official VS Code MCP documentation.
NPX
{
"servers": {
"everything": {
"command": "npx",
"args": ["-y", "@modelcontextprotocol/server-everything"]
}
}
}
On Windows, use:
{
"servers": {
"everything": {
"command": "cmd",
"args": ["/c", "npx", "-y", "@modelcontextprotocol/server-everything"]
}
}
}
Running from source with HTTP+SSE Transport (deprecated as of 2025-03-26)
cd src/everything
npm install
npm run start:sse
Run from source with Streamable HTTP Transport
cd src/everything
npm install
npm run start:streamableHttp
Running as an installed package
Install
npm install -g @modelcontextprotocol/server-everything@latest
Run the default (stdio) server
npx @modelcontextprotocol/server-everything
Or specify stdio explicitly
npx @modelcontextprotocol/server-everything stdio
Run the SSE server
npx @modelcontextprotocol/server-everything sse
Run the streamable HTTP server
npx @modelcontextprotocol/server-everything streamableHttp
FAQ
Common questions
Discussion
Questions & comments · 0
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