Sequential Thinking MCP Server

Sequential Thinking MCP Server provides a dedicated MCP tool that guides problem-solving through a structured, step-by-step thinking process. It supports dynamic adjustment of the number of thoughts and allows revision and branching within a controlled workflow, making it ideal for complex analysis and solution hypothesis development. This server is designed to register a single tool, sequential_thinking, and is integrated with common MCP deployment methods (NPX, Docker) as well as editor integrations like Claude Desktop and VS Code for quick setup. The documentation provides exact configuration snippets, usage patterns, and building instructions to help you deploy and use the MCP server effectively, including Codex CLI, NPX, and Docker installation examples.

Use this MCP when you need a reproducible, transparent thinking process broken into discrete steps. The sequential_thinking tool accepts inputs that describe the current thinking step, whether another thought is needed, the current thought number, and an estimated total of thoughts, along with optional revision and branching metadata. This enables you to orchestrate multi-step reasoning and easily revise or branch paths as new information arises. Code examples from the docs show how to configure and run the server via NPX or Docker, and how to integrate with Claude Desktop or VS Code for convenient usage in your development environment. Example usage via Codex CLI demonstrates how to register the tool in an external workflow. Typical usage patterns include:

Code examples from the docs:

// NPX installation snippet
{
  "servers": {
    "sequential-thinking": {
      "command": "npx",
      "args": [\
        "-y",\
        "@modelcontextprotocol/server-sequential-thinking"\
      ]
    }
  }
}

// Docker installation snippet
{
  "servers": {
    "sequential-thinking": {
      "command": "docker",
      "args": [\
        "run",\
        "--rm",\
        "-i",\
        "mcp/sequentialthinking"\
      ]
    }
  }
}

// Claude Desktop configuration (NPX)
"npx" config snippet:
{
  "mcpServers": {
    "sequential-thinking": {
      "command": "npx",
      "args": [\
        "-y",\
        "@modelcontextprotocol/server-sequential-thinking"\
      ]
    }
  }
}

// Claude Desktop configuration (Docker)
"docker" config snippet:
{
  "mcpServers": {
    "sequentialthinking": {
      "command": "docker",
      "args": [\
        "run",\
        "--rm",\
        "-i",\
        "mcp/sequentialthinking"\
      ]
    }
  }
}

// VS Code NPX installation (VS Code integration)
{
  "servers": {
    "sequential-thinking": {
      "command": "npx",
      "args": [\
        "-y",\
        "@modelcontextprotocol/server-sequential-thinking"\
      ]
    }
  }
}

// VS Code Docker installation (VS Code integration)
{
  "servers": {
    "sequential-thinking": {
      "command": "docker",
      "args": [\
        "run",\
        "--rm",\
        "-i",\
        "mcp/sequentialthinking"\
      ]
    }
  }
}

// Codex CLI usage to add sequential-thinking via NPX
codex mcp add sequential-thinking npx -y @modelcontextprotocol/server-sequential-thinking