Reasoner
A systematic reasoning MCP server implementation for Claude Desktop with beam search and thought evaluation capabilities
Jacck
Tools
mcp-reasoner
Advanced reasoning tool with multiple strategies including Beam Search and Monte Carlo Tree Search
README
MCP Reasoner
A reasoning implementation for Claude Desktop that lets you use both Beam Search and Monte Carlo Tree Search (MCTS). tbh this started as a way to see if we could make Claude even better at complex problem-solving... turns out we definitely can.
Current Version:
v2.0.0
What's New:
Added 2 Experimental Reasoning Algorithms:
- `mcts-002-alpha` - Uses the A* Search Method along with an early *alpha* implementation of a Policy Simulation Layer - Also includes an early *alpha* implementation of Adaptive Exploration Simulator & Outcome Based Reasoning Simulator *NOTE* the implementation of these alpha simulators is not complete and is subject to change - `mcts-002alt-alpha` - Uses the Bidirectional Search Method along with an early *alpha* implementation of a Policy Simulation Layer - Also includes an early *alpha* implementation of Adaptive Exploration Simulator & Outcome Based Reasoning Simulator *NOTE* the implementation of these alpha simulators is not complete and is subject to change
What happened to mcts-001-alpha
and mcts-001alt-alpha
?
Quite simply: It was useless and near similar to the base
mcts
method. After initial testing the results yielded in basic thought processes was near similar showing that simply adding policy simulation may not have an effect.
So why add Polciy Simulation Layer now?
Well i think its important to incorporate Policy AND Search in tandem as that is how most of the algorithms implement them.
Previous Versions:
v1.1.0
Added model control over search parameters:
beamWidth - lets Claude adjust how many paths to track (1-10)
numSimulations - fine-tune MCTS simulation count (1-150)
Features
- Two search strategies that you can switch between:
- Beam search (good for straightforward stuff)
- MCTS (when stuff gets complex) with alpha variations (see above)
- Tracks how good different reasoning paths are
- Maps out all the different ways Claude thinks through problems
- Analyzes how the reasoning process went
- Follows the MCP protocol (obviously)
Installation
git clone https://github.com/frgmt0/mcp-reasoner.git
OR clone the original:
git clone https://github.com/Jacck/mcp-reasoner.git
cd mcp-reasoner
npm install
npm run build
Configuration
Add to Claude Desktop config:
{
"mcpServers": {
"mcp-reasoner": {
"command": "node",
"args": ["path/to/mcp-reasoner/dist/index.js"],
}
}
}
Testing
[More Testing Coming Soon]
Benchmarks
[Benchmarking will be added soon]
Key Benchmarks to test against:
-
MATH500
-
GPQA-Diamond
-
GMSK8
-
Maybe Polyglot &/or SWE-Bench
License
This project is licensed under the MIT License - see the LICENSE file for details.
Recommended Servers
Qdrant Server
This repository is an example of how to create a MCP server for Qdrant, a vector search engine.
Persistent Knowledge Graph
An implementation of persistent memory for Claude using a local knowledge graph, allowing the AI to remember information about users across conversations with customizable storage location.
React MCP
react-mcp integrates with Claude Desktop, enabling the creation and modification of React apps based on user prompts

Any OpenAI Compatible API Integrations
Integrate Claude with Any OpenAI SDK Compatible Chat Completion API - OpenAI, Perplexity, Groq, xAI, PyroPrompts and more.
Exa MCP
A Model Context Protocol server that enables AI assistants like Claude to perform real-time web searches using the Exa AI Search API in a safe and controlled manner.
MySQL Server
Allows AI assistants to list tables, read data, and execute SQL queries through a controlled interface, making database exploration and analysis safer and more structured.
Aindreyway Codex Keeper
Serves as a guardian of development knowledge, providing AI assistants with curated access to latest documentation and best practices.
Perplexity Deep Research
A server that allows AI assistants to perform web searches using Perplexity's sonar-deep-research model with citation support.

OpenRouter MCP Server
Provides integration with OpenRouter.ai, allowing access to various AI models through a unified interface.
Search1API MCP Server
A Model Context Protocol (MCP) server that provides search and crawl functionality using Search1API.