The Inner Monologue MCP Server is an MCP server that implements a cognitive reasoning tool inspired by Google DeepMind's Inner Monologue. It enables Large Language Models to conduct private, structured self-reflection and multi-step reasoning before generating responses, simulating the human thinking process. The server provides a silent workspace where internal reasoning, debugging logic, and approach verification can occur without exposing intermediate thoughts in external outputs. By isolating reasoning steps, it aims to improve reasoning quality, reduce errors, and enhance problem-solving capabilities across coding, mathematics, and analytical tasks. The MCP-compatible design allows Claude and other MCP clients to integrate seamlessly, enabling a consistent interface for internal reasoning workflows. The repository emphasizes practical usage patterns, example payloads, and configuration guidance for routing inner-monologue through common developer tools such as Claude Desktop, Cursor, and VS Code. It highlights benefits in reasoning quality, efficiency, memory optimization, and a structured approach to complex tasks, including decomposition, planning, and verification. The content focuses on privacy-preserving internal thinking that augments model performance while keeping intermediate thoughts hidden from the user-facing outputs.