
MCP Think Tool Server
โ 39from cgize
An MCP server implementing the 'think' tool to improve Claude's complex reasoning capabilities.
MCP Think Tool Server
A Model Context Protocol (MCP) server implementing the "think" tool for improving Claude's complex reasoning capabilities.
Overview
This MCP server implements Anthropic's "think" tool, which provides Claude with a dedicated space for structured thinking during complex problem-solving tasks. As described in Anthropic's blog post, the think tool has been shown to significantly improve performance in complex tasks requiring policy adherence and reasoning in long chains of tool calls.
Custom Instructions
Add these custom instructions to Claude to optimize its use of the think tool:
You have access to a "think" tool that provides a dedicated space for structured reasoning. Using this tool significantly improves your performance on complex tasks.
## When to use the think tool
Before taking any action or responding to the user after receiving tool results, use the think tool as a scratchpad to:
- List the specific rules that apply to the current request
- Check if all required information is collected
- Verify that the planned action complies with all policies
- Iterate over tool results for correctness
- Analyze complex information from web searches or other tools
- Plan multi-step approaches before executing them
## Key Use Cases
- **Complex Tool Chains**: When Claude needs to call complex tools and analyze outputs carefully
- **Policy Adherence**: For navigating policy-heavy environments with detailed guidelines
- **Sequential Decision Making**: When each step builds on previous ones and mistakes are costly
- **Multi-step Analysis**: Breaking down complex problems into manageable steps
## Available Tools
- **think**: Record structured reasoning during problem-solving
- **get_thoughts**: Retrieve all recorded thoughts
- **clear_thoughts**: Reset the thinking process
- **get_thought_stats**: Analyze thinking patterns
## Example Prompt
Using the think tool, solve this multi-step problem:
A train travels at a constant speed of 60 km/h. It departs from station A at 9:00 AM and arrives at station B at 11:30 AM. What is the distance between stations A and B?
npx -y @smithery/cli install @cgize/claude-mcp-think-tool --client claudeHow to use the think tool effectively
When using the think tool:
- Break down complex problems into clearly defined steps
- Identify key facts, constraints, and requirements
- Check for gaps in information and plan how to fill them
- Evaluate multiple approaches before choosing one
- Verify your reasoning for logical errors or biases
## Installation
### Installing via Smithery
To install Think Tool Server for Claude Desktop automatically via [Smithery](https://smithery.ai/server/@cgize/claude-mcp-think-tool):
```bash
npx -y @smithery/cli install @cgize/claude-mcp-think-tool --client claudeManual Installation
npm install -g @cgize/mcp-think-toolConfiguration
Add this configuration to your MCP configuration file:
{
"mcpServers": {
"think-tool": {
"command": "npx",
"args": [
"-y",
"@cgize/mcp-think-tool"
],
"type": "stdio",
"pollingInterval": 30000,
"startupTimeout": 30000,
"restartOnFailure": true
}
}
}Configuration file location:
C:\Users\[username]\AppData\Roaming\Claude\claude_desktop_config.json
If installed globally, you can also use:
{
"mcpServers": {
"think-tool": {
"command": "claude-mcp-think-tool",
"args": [],
"type": "stdio",
"pollingInterval": 30000,
"startupTimeout": 30000,
"restartOnFailure": true
}
}
}No common issues documented yet. If you hit a problem, the repository's GitHub Issues page is the best place to look.
Licensed under MITโ you can use, modify, and redistribute it under that license's terms.
License
MIT