Poly-Glot AI — AI Code Comment Generator for 12 Languages

Developers can add professional JSDoc, PyDoc, Javadoc, Doxygen, and why-comments to any codebase in seconds using Poly-Glot AI. The tool supports 12 programming languages and operates with complete privacy—users bring their own API keys from OpenAI, Anthropic, or Google, and their code never touches Poly-Glot's servers. The platform offers multiple ways to generate documentation. Engineers can use the web application, which stores API keys locally in the browser and connects directly to AI providers without routing data through Poly-Glot's infrastructure. Alternatively, the CLI tool (version 2.1.36, available on npm) enables batch commenting from the terminal, making it suitable for CI/CD pipelines and scripting workflows. Poly-Glot emphasizes that comments serve as instructions for AI coding assistants. Modern tools like GitHub Copilot, ChatGPT, and Claude actively read comments to understand developer intent, context, and business logic. The platform generates both "what" comments that describe code functionality and "why" comments that explain decisions, trade-offs, edge cases, and reasoning behind implementation choices. The tool integrates directly into existing development workflows. Engineers can select code in their editor, trigger documentation generation via keyboard shortcut, and receive inline comments without context switching. GitHub Copilot users can invoke Poly-Glot by typing @poly-glot in Copilot Chat. The platform also supports MCP clients including Goose, Claude Desktop, Cursor, and Windsurf, allowing developers to document and analyze code without leaving their workflow. For legacy codebases, Poly-Glot provides a repeatable workflow to bring undocumented code up to modern standards without requiring costly rewrites. The platform addresses common problems in older systems: tribal knowledge, inconsistent comment styles across teams and timeframes, and documentation gaps from departed engineers. Additional capabilities include a context-aware AI assistant for Q&A, debugging, refactoring suggestions, and test generation, as well as automated pull request reviews that scan changed files and post inline documentation suggestions. New users can create a free account and start generating documentation in 30 seconds. For large teams, Poly-Glot offers custom enterprise pricing with SSO, compliance features, private deployment options, and dedicated onboarding.