Understand any codebase in plain English
The fastest way to understand any codebase using real project signals. Not blind AI summarization. ExplainThisRepo analyzes configs, entrypoints, manifests, dependencies, file structure, and high-signal files.
explainthisrepo owner/repoFeatures
Everything you need to understand code
ExplainThisRepo uses real repository data, not just the README, to ground every explanation in actual structure and signals.
GitHub & Local Analysis
Analyze any public GitHub repository or local directory. Works with private repos when authenticated.
Real Project Signals
Derives architectural summaries from configs, entrypoints, manifests, dependencies, and file structure—not blind AI.
High-Signal Files
Extracts architecture signals from package.json, pyproject.toml, Dockerfile, configs, and more.
Multiple Explanation Modes
Quick one-liner, simple, detailed with architecture, or pure tech stack detection. Choose your level of detail.
Flexible Input Formats
Paste any GitHub URL, issue/PR link, SSH clone link, or owner/repo. All inputs auto-normalized internally.
CLI Aliases & Portability
Works via pip, npm, npx, or as a standalone binary. Run as explainthisrepo, explain-this-repo, or etr.
Modes
Multiple ways to understand a repo
Choose the right level of detail. From a one-liner to a full architectural breakdown.
Flexible Input
Paste any GitHub format
No need to reformat URLs. ExplainThisRepo accepts repositories the way you actually copy them. All inputs are normalized internally to owner/repo.
https://github.com/owner/repoowner/repogithub.com/owner/repoowner/repoowner/repoowner/repohttps://github.com/owner/repo/issues/123owner/repohttps://github.com/owner/repo?tab=readmeowner/repogit@github.com:owner/repo.gitowner/repoConfiguration
Choose your LLM provider
Run explainthisrepo init to configure your preferred model backend, then use --llm flag to override.
Gemini
explainthisrepo owner/repo --llm geminiOpenAI
explainthisrepo owner/repo --llm openaiOllama
explainthisrepo owner/repo --llm ollamaAnthropic
explainthisrepo owner/repo --llm anthropicGroq
explainthisrepo owner/repo --llm groqOpenRouter
explainthisrepo owner/repo --llm openrouterGitHub Token for Private Repos
ExplainThisRepo supports GitHub authentication to access private repositories and increase API rate limits. When you run explainthisrepo init, you'll be prompted to provide your GitHub token.
Why you need a GitHub token:
- ✓ Access private repositories
- ✓ Increase API rate limits (5000 req/hour vs 60 req/hour)
- ✓ Analyze repos you have access to
How to set up:
- Run
explainthisrepo init - Follow the prompts to create or paste your GitHub token
- Token is securely stored locally in your config
See GITHUB_TOKEN.md for detailed step-by-step instructions.
Standalone Binaries
Download for your platform
Pre-built executables for macOS, Linux, and Windows. No Python or Node.js required.
Advanced
Advanced usage & environments
Powerful features for power users: local analysis, command aliases, and mobile support.
Local Directory Analysis
Analyze any local directory directly without GitHub. Works with all modes (--quick, --simple, --detailed, --stack). Perfect for private or non-GitHub projects.
explainthisrepo . # Current directoryexplainthisrepo ./path/to/directoryCLI Aliases
Three command names that all work identically. Pick your favorite: explainthisrepo, explain-this-repo, or etr for faster typing.
explainthisrepo owner/repoexplain-this-repo owner/repoetr owner/repoTermux (Android)
Run ExplainThisRepo on your phone via Termux. Install with pip --user or use the Node.js version with npx for better compatibility.
pip install --user -U explainthisreponpx explainthisrepo owner/repoInstallation
Get started in seconds
Install via pip or npm and start explaining repos right away. Requires Python 3.9+ or Node.js.
First time setup: Run explainthisrepo init to configure your preferred LLM provider.
Supported providers: Gemini, OpenAI, Ollama, Anthropic, Groq, OpenRouter
Stop guessing. Start understanding.
Run a single command and get a clear explanation of any public GitHub repository.