Servers
io.github.modelcontextprotocol/server-everything

Everything

io.github.modelcontextprotocol/server-everything · v2025.9.12

stdio

Reference test server that exercises every MCP feature: tools, resources, prompts, sampling, logging and progress. Useful for testing clients, not for production.

reference testing official

Claude Code

claude mcp add server-everything -- npx -y @modelcontextprotocol/server-everything

mcpServers JSON (Claude Desktop, Cursor, Windsurf, VS Code)

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

Tools (8)

echoaddlongRunningOperationprintEnvsampleLLMgetTinyImageannotatedMessagegetResourceReference

server.json manifest

{
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-09-29/server.schema.json",
  "_meta": {
    "io.mcpregistry/license": "MIT",
    "io.mcpregistry/tags": [
      "reference",
      "testing",
      "official"
    ],
    "io.mcpregistry/tools": [
      "echo",
      "add",
      "longRunningOperation",
      "printEnv",
      "sampleLLM",
      "getTinyImage",
      "annotatedMessage",
      "getResourceReference"
    ],
    "io.mcpregistry/transport": "stdio"
  },
  "description": "Reference test server that exercises every MCP feature: tools, resources, prompts, sampling, logging and progress. Useful for testing clients, not for production.",
  "name": "io.github.modelcontextprotocol/server-everything",
  "packages": [
    {
      "environmentVariables": [],
      "identifier": "@modelcontextprotocol/server-everything",
      "registryType": "npm",
      "transport": {
        "type": "stdio"
      },
      "version": "2025.9.12"
    }
  ],
  "repository": {
    "source": "github",
    "url": "https://github.com/modelcontextprotocol/servers"
  },
  "title": "Everything",
  "version": "2025.9.12"
}