Thinking Claude is a browser extension and instruction framework that enhances Claude's reasoning by prompting it to think through problems systematically before responding.
The project addresses the desire to observe and leverage Claude's internal reasoning process. It works by providing a comprehensive set of instructions that guide Claude toward deeper, more methodical thinking, paired with a browser extension that makes this extended reasoning visible and manageable within the Claude web interface. The extension automatically organizes Claude's thoughts into collapsible sections, allowing users to fold and unfold different parts of the reasoning, copy specific sections, and view the complete thought process in a clean, readable format.
The tool is designed for developers and users who want to understand how Claude arrives at its answers rather than just see the final response. It works with both free and paid versions of Claude on the web, using Claude 3.5 Sonnet. The project explicitly notes it is not aimed at benchmark performance or mathematical leaps, which are determined by the base model itself, but rather at exploring Claude's reasoning depth for practical daily tasks where seeing the inner monologue proves interesting and useful.
The repository has been retired because Claude now includes strong built-in reasoning capabilities, making this supplementary approach unnecessary. The project consisted of versioned instruction sets in the model_instructions directory and browser extension implementations for Chrome and Firefox, with the Chrome extension available both through the Chrome Web Store and as manual installations from the releases page.
