Logic-Thinking MCP Server

Model Context Protocol server for formal logical reasoning, mathematical problem-solving, verification, and proof construction.

Features

• 11 logic systems: Syllogistic, Propositional, Predicate, Mathematical, Modal, Temporal, Fuzzy, Deontic, SMT, Probabilistic, ASP

• External solver integration: Z3 for constraint solving, ProbLog for probabilistic reasoning, Clingo for answer set programming

• Proof library with persistent storage and full-text search

• Assumption extraction for detecting hidden assumptions

• Argument scoring with detailed analysis

• Batch processing for multiple concurrent requests

• Cross-system translation between logic systems

• Contradiction detection

• Automatic system detection from input

• Natural language processing with enhanced parsers

• Visualizations: truth tables, Venn diagrams, Kripke frames, parse trees

Related MCP server: Clear Thought 1.5

Installation

git clone https://github.com/quanticsoul4772/logic-thinking.git
cd logic-thinking
npm install
npm run build

External Solver Dependencies

Three external solvers are used for advanced reasoning capabilities:

1. Z3 SMT Solver - Install via pip:

pip install z3-solver

2. ProbLog - Install via pip:

pip install problog

3. Clingo - Install via pip:

pip install clingo

The server will attempt to use Python from pyenv if available, otherwise falling back to system Python. Ensure your Python environment has these packages installed.

Claude Desktop Integration

Add to your Claude Desktop configuration file:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "logic-thinking": {
      "command": "node",
      "args": [
        "--max-old-space-size=4096",
        "--expose-gc",
        "--max-semi-space-size=64",
        "/absolute/path/to/logic-thinking/dist/index.js"
      ]
    }
  }
}

MCP Tools

The server provides 10 tools:

1. logic-thinking - Core operations (validate, formalize, visualize, solve, score)

2. logic-batch - Batch processing

3. logic-translate - Cross-system translation

4. logic-contradiction - Detect contradictions

5. logic-proof-save - Save proofs

6. logic-proof-search - Search proofs

7. logic-proof-get - Retrieve proof by ID

8. logic-proof-list - List proofs

9. logic-proof-stats - Library statistics

10. logic-extract-assumptions - Extract assumptions

Logic Systems

Syllogistic Logic

Traditional Aristotelian categorical logic.

Propositional Logic

Truth-functional reasoning with logical connectives.

Predicate Logic

First-order logic with quantified statements.

Mathematical Logic

Equation solving, sequence detection, pattern recognition.

Modal Logic

Necessity and possibility with Kripke semantics. Systems: K, T, D, B, K4, KB, S4, S5, KD45

Temporal Logic

Time-based reasoning about sequences and processes.

Fuzzy Logic

Reasoning with degrees of truth and linguistic hedges.

Deontic Logic

Normative reasoning about obligations and permissions.

SMT Logic

Constraint satisfaction and optimization using Z3 theorem prover. Supports integer, real, boolean, and bitvector variables with optimization objectives.

Probabilistic Logic

Probabilistic reasoning using ProbLog. Supports probabilistic facts, rules, evidence-based inference, and probability queries.

ASP (Answer Set Programming)

Non-monotonic reasoning using Clingo. Supports choice rules, constraints, optimization, default reasoning, and stable model enumeration.

License

MIT License - see LICENSE file for details

Author

quanticsoul4772

GitHub: https://github.com/quanticsoul4772