Poly-Glot — AI Code Comment Generator for 12 Languages

Developers working across multiple languages can use Poly-Glot to instantly generate standardized code documentation — JSDoc, PyDoc, Javadoc, KDoc, Doxygen, and why-comments — for JavaScript, TypeScript, Python, Java, Go, Rust, Swift, Kotlin, and more. The tool takes inconsistent or undocumented code and transforms it into professional-grade documentation tailored to the language and the team's standards. Poly-Glot works with twelve programming languages in total: JavaScript, Python, TypeScript, Java, C++, C#, Go, Rust, Ruby, PHP, Swift, and Kotlin. Code can be pasted directly, uploaded, or processed via the command line, making it flexible for individual developers and team workflows alike. The web application runs entirely in the browser, meaning code and API keys never leave the user's machine. It supports both OpenAI and Anthropic API keys, which are stored locally and never transmitted to Poly-Glot's servers. For developers who prefer working in the terminal, the poly-glot-ai-cli is a zero-dependency command-line tool available on npm. It supports batch commenting, integration into CI/CD pipelines, and scripting workflows. The CLI offers multiple modes to control exactly which types of comments get added, includes preview flags so nothing touches disk without confirmation, and can process entire directories — confirming before writing and displaying a summary upon completion. A VS Code extension is also in development, which will bring AI-powered comment generation directly into the editor without requiring copy-pasting or context switching. Beyond code readability, Poly-Glot addresses a practical need in AI-assisted development. Tools like GitHub Copilot, ChatGPT, and Claude actively read code comments to understand developer intent, context, and business logic. Well-structured comments improve how AI assistants identify bugs, generate implementation code from intent, suggest refactoring improvements, and produce pull request summaries and onboarding documentation. Standardized comments also improve retrieval in RAG-based systems and make code more discoverable for generative engine optimization. Poly-Glot positions clean, consistent documentation as a direct multiplier on AI-assisted productivity. The tool is built for individual developers, engineering teams, and anyone working in polyglot codebases who wants documentation that meets language-specific standards without the manual effort. Most comment generation requests cost less than one cent when using a connected API key, making it accessible for regular use across projects of varying sizes. The free web UI requires no installation, while the npm CLI is available for teams that want to incorporate documentation generation into automated workflows.