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MCP Think Tool Server

@abhinav-mangla

Repository

Basic information

Category

Other

License

MIT

Transports

stdio

Author

abhinav-mangla

About MCP Think Tool Server

MCP Think Tool Server

#mathgpt#math-solver#math-assistant

MCP Think Tool Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "think-tool-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "think-tool-mcp"
      ]
    }
  }
}

MCP Think Tool Server tools

1

Use this tool to think about something. It will not obtain new information or change anything. Use it when complex reasoning is needed. Args: thought: A thought to think about. This can be structured reasoning, step-by-step analysis, policy verification, or any other mental process that helps with problem-solving.

Overview

What is MCP Think Tool Server?

The MCP Think Tool Server is a Model Context Protocol (MCP) server that implements a "think" tool for Large Language Models (LLMs). Based on Anthropic's research, it gives LLMs a dedicated space for structured thinking during complex reasoning tasks, improving performance on policy adherence, multi-step analysis, and decision-making. It works with any LLM supporting MCP, such as Claude and GPT-4.

How to use MCP Think Tool Server?

Install and run with npx -y think-tool-mcp. For Cursor IDE (v0.45.6+), add a new MCP server in Settings → Features with the command npx -y think-tool-mcp. For Claude Desktop, add the entry to claude_desktop_config.json. The server registers a single tool called think that takes a thought (string) parameter; the LLM invokes it automatically when needed.

Key features of MCP Think Tool Server

  • Dedicated structured thinking space for LLMs
  • Context memory aid during long tool call chains
  • Policy verification for complex decision-making
  • Problem decomposition into manageable steps
  • Lightweight with minimal overhead
  • Easy integration with Cursor, Claude Desktop, and other MCP platforms

Use cases of MCP Think Tool Server

  • Complex problem solving (e.g., supply chain optimization)
  • Policy adherence and compliance verification (e.g., return policy analysis)
  • Multi-tool analysis and synthesis (e.g., re-engagement campaign creation)
  • Sequential decision making requiring step-by-step reasoning

Frequently asked questions

1

What are the requirements to run the server?

Node.js version 16 or higher, npm, and an MCP-compatible platform such as Cursor or Claude Desktop.

2

How do I configure it for Cursor IDE?

Open Cursor Settings → Features → MCP Servers, click "+ Add New MCP Server", set Name to `think-tool-mcp`, Type to `command`, and Command to `npx -y think-tool-mcp`. Save and restart Cursor.

3

What does the think tool do?

The think tool provides a space for the LLM to record structured thoughts, reasoning, or analysis. It does not retrieve information or make changes—it purely aids the model’s internal reasoning process.

4

Does using the think tool improve performance?

Yes. On τ-Bench airline domain, the think tool with an optimized prompt achieved a 54% relative improvement in pass^1 metric (0.584 vs baseline 0.332). On the retail domain it improved by 3.7%. On SWE-Bench, the think tool contributed to a 64.9% score (vs 62.3% baseline).

5

How do I troubleshoot if the server doesn't start?

Ensure Node.js 16+ is installed, verify the command path in your MCP configuration, and check for port conflicts. If the tool does not appear in your AI platform, restart the platform and confirm the server is running.

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