How is it different from extended thinking?

Extended thinking happens before response generation, whereas the “think” tool allows Claude to pause *during* response generation to consider whether it has all necessary information to proceed.

What are the runtime requirements and dependencies?

think-mcp-server is written in TypeScript and runs as a Node.js MCP server. Dependencies are managed via npm. It uses stdio for communication, so a Node.js runtime is required.

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Think MCP Server

A minimal MCP Server based on the Anthropic's "think" tool research

Local serverstdioTypeScript

What is the Think MCP Server?

A minimal MCP Server based on the Anthropic's "think" tool research

What the server does

This project implements a minimal Message Control Protocol (MCP) server that provides Claude AI models with the "think" tool capability. Based on Anthropic's research published on March 20, 2025, this implementation enables Claude to perform better on complex reasoning tasks involving multi-step tool usage.

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.

Recorded tools

Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.

Tool	What it does
think	Enables Claude to think about a problem or analyze information

How to install the Think MCP Server

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

Configuration as documented by the project. Restart the client after saving.

Example prompts to try

“Use Think to think.”
“Use Think to Required.”
“Use Think to Tools.”

Frequently asked questions

The “think” tool gives Claude a dedicated space to pause during response generation and include an additional thinking step. It does not fetch new information or change any database; it simply appends the thought to a log.