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richards199999/thinking-claude

Analysis updated 2026-06-24

17,014TypeScriptAudience · vibe coderComplexity · 2/5Setup · easy

TLDR

Retired project that gave Claude a step-by-step thinking protocol via custom instructions, plus a Chrome extension that formatted the chain-of-thought into collapsible sections.

Mindmap

mindmap
  root((Thinking Claude))
    Inputs
      Custom instruction text
      Claude responses
    Outputs
      Step by step reasoning
      Collapsible thinking blocks
    Use Cases
      Read Claude reasoning
      Copy reasoning sections
      Visible chain of thought
    Tech Stack
      TypeScript
      Chrome Extension
      Markdown
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Code map

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What do people build with it?

USE CASE 1

Paste the thinking protocol into claude.ai custom instructions to force step-by-step reasoning.

USE CASE 2

Install the Chrome extension to fold Claude's long reasoning into collapsible sections.

USE CASE 3

Read the protocol files as a study example for designing your own reasoning prompts.

USE CASE 4

Fork the extension as a starting point for a browser tool that reformats LLM output.

What is it built with?

TypeScriptChrome ExtensionJavaScriptMarkdown

How does it compare?

richards199999/thinking-claudematerial-components/material-components-webclauderic/dnd-kit
Stars17,01417,07217,109
LanguageTypeScriptTypeScriptTypeScript
Setup difficultyeasyeasyeasy
Complexity2/52/53/5
Audiencevibe coderdeveloperdeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · easy Time to first run · 5min

Project is retired, the protocol still works as a custom instruction but the extension may lag behind current claude.ai DOM changes.

In plain English

Thinking Claude is a now-retired project that aimed to make Claude (an AI assistant) reason more carefully and show its thought process before giving answers. The project has been officially retired because Claude's built-in reasoning capabilities have since improved enough to make this add-on unnecessary. While it was active, the project had two main pieces: a "thinking protocol" (a set of detailed instructions you could paste into Claude's custom instructions settings to guide it through a more systematic, step-by-step reasoning process before replying) and a browser extension for Chrome that made Claude's internal thinking process easier to read, collapsing and expanding sections, letting you copy parts, and organizing the output cleanly. To use it, you'd paste one of the included instruction files into Claude's custom style settings on claude.ai, and the browser extension would automatically format any thinking Claude displayed into readable, collapsible sections. This made long reasoning chains much easier to follow. The project was not designed to improve Claude's performance on math benchmarks or hard logic puzzles, the creator was more interested in exploring how deeply Claude could reason through everyday tasks, and in making that inner monologue visible and fun to read. The repository is written in TypeScript and was available for Chrome (with a Firefox version in development at the time of retirement).

Copy-paste prompts

Prompt 1
Help me adapt the Thinking-Claude protocol file into a custom instruction for ChatGPT or Gemini.
Prompt 2
Walk me through loading the Thinking-Claude Chrome extension from source for local testing.
Prompt 3
Show me the parts of the Thinking-Claude protocol that enforce self-checking before the final answer.
Prompt 4
Help me port the Thinking-Claude collapsible reasoning UI to a Firefox extension.
Prompt 5
Explain why the Thinking-Claude project was retired and what newer Claude features replace it.

Frequently asked questions

What is thinking-claude?

Retired project that gave Claude a step-by-step thinking protocol via custom instructions, plus a Chrome extension that formatted the chain-of-thought into collapsible sections.

What language is thinking-claude written in?

Mainly TypeScript. The stack also includes TypeScript, Chrome Extension, JavaScript.

How hard is thinking-claude to set up?

Setup difficulty is rated easy, with roughly 5min to a first successful run.

Who is thinking-claude for?

Mainly vibe coder.

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