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Sequential Thinking MCP Server

sequentialthinking-mcp

Installation

Add the following to your MCP client configuration file.

Configuration

{
  "mcpServers": {
    "cmarin-sequentialthinking-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-sequential-thinking"
      ],
      "env": {
        "DISABLE_THOUGHT_LOGGING": "true"
      }
    }
  }
}

You can run the Sequential Thinking MCP Server to enable a structured, step-by-step problem-solving workflow with the ability to revise, branch, and verify thoughts. This server pairs with MCP clients to provide an interactive thinking process that helps you decompose problems and generate tested solutions.

How to use

Connect an MCP client to the Sequential Thinking MCP Server to start a guided, reflective analysis session. Use the client to send a sequence of thinking steps, revising or branching as needed. You can adjust the total number of thoughts, mark revisions, and create branches to explore alternate reasoning paths. The tool is designed for tasks that benefit from a structured, multi-step approach and ongoing context across steps.

How to install

Prerequisites you need before installing: a runtime capable of running MCP servers (Node.js for npx-based usage, and Docker if you prefer containerized execution). Ensure you have access to a terminal or shell with permissions to install and run processes.

Option A: NPX installation (recommended for quick start) use the following MCP server configuration snippet exactly as shown:

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

Option B: Docker installation use the following MCP server configuration snippet exactly as shown:

{
  "mcpServers": {
    "sequentialthinking": {
      "command": "docker",
      "args": [
        "run",
        "--rm",
        "-i",
        "mcp/sequentialthinking"
      ]
    }
  }
}

Optional environment control: to disable logging of thought information, set the environment variable DISABLE_THOUGHT_LOGGING to true in your runtime environment. This can be configured in your MCP client or hosting environment as appropriate.

Additional sections

Configuration overview: you can choose either NPX-based or Docker-based execution. Use the NPX approach for a quick, local setup, or Docker if you prefer isolated, containerized runs. Both options expose the same Sequential Thinking tool to your MCP client.

Security note: ensure only trusted clients can access the MCP server, especially when running with Docker or exposing a URL. Adjust access controls and monitor logs according to your environment’s security requirements.

Troubleshooting tips: if the server does not respond, verify that the command you chose is installed and accessible in your environment (npx for NPX usage or Docker for containerized usage). Check that the MCP client is correctly configured to connect to the server and that any required environment variables are set.

Available tools

sequential_thinking

A tool that facilitates a detailed, step-by-step thinking process for problem-solving and analysis, enabling you to break down problems, revise thoughts, branch paths, and verify solution hypotheses.