What is Chain Of Thought Mcp Server

The chain-of-thought-mcp-server is a specialized MCP server designed to inject raw chain-of-thought tokens from a reasoning model, enhancing the performance of language models in complex scenarios.

Use cases

Use cases include assisting AI agents in decision-making processes, improving user interactions in chatbots, and enhancing the accuracy of responses in complex queries.

How to use

To use the chain-of-thought-mcp-server, clone the repository, install dependencies using ‘uv sync’, obtain a Groq API key, and update your MCP configuration to include the server details and environment variables.

Key features

Key features include the ability to generate a stream of chain-of-thought tokens, improved performance in reasoning tasks, and integration with Groq’s API for accessing advanced language models.

Where to use

This MCP server can be used in various fields such as natural language processing, AI-driven customer support, and any application requiring enhanced reasoning capabilities in language models.

Chain of Thought MCP Server

Anthropic’s recent article “The “think” tool: Enabling Claude to stop and think in complex tool use situations” shows that using an external think tool notably increases performance on SWE Bench.

This MCP Server uses Groq’s API to call LLMs which expose raw chain-of-thought tokens from Qwen’s qwq model.

Installation

1. Clone this repository to your local machine.
2. Run uv sync to install depencies
3. Get a Groq API key from here.
4. Update your mcp configuration with:

The path should be the local path to this repository. You can get this easily by running pwd in the terminal from the root of the repository.

Instructing The AI To Use This MCP Server

I personally prefer the agent call this tool on every request to increase performance. I add this to my rules for the agent:

<IMPORTANT>
<when_to_use_tool>
You should call the mcp chain_of_thought tool every time you talk to the user, which generates a chain-of-thought stream which you will use to complete the user's request.
</when_to_use_tool>

Before taking any action or responding to the user use the chain of thought 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 

Here are some examples of what to iterate over inside the think tool:
<cot_tool_example_1>
User wants to cancel flight ABC123
- Need to verify: user ID, reservation ID, reason
- Check cancellation rules:
  * Is it within 24h of booking?
  * If not, check ticket class and insurance
- Verify no segments flown or are in the past
- Plan: collect missing info, verify rules, get confirmation
</cot_tool_example_1>

<cot_tool_example_2>
User wants to book 3 tickets to NYC with 2 checked bags each
- Need user ID to check:
  * Membership tier for baggage allowance
  * Which payments methods exist in profile
- Baggage calculation:
  * Economy class × 3 passengers
  * If regular member: 1 free bag each → 3 extra bags = $150
  * If silver member: 2 free bags each → 0 extra bags = $0
  * If gold member: 3 free bags each → 0 extra bags = $0
- Payment rules to verify:
  * Max 1 travel certificate, 1 credit card, 3 gift cards
  * All payment methods must be in profile
  * Travel certificate remainder goes to waste
- Plan:
1. Get user ID
2. Verify membership level for bag fees
3. Check which payment methods in profile and if their combination is allowed
4. Calculate total: ticket price + any bag fees
5. Get explicit confirmation for booking
</cot_tool_example_2>

</IMPORTANT>