Codewiki-

verified

AI-native code documentation with chat and diagrams.

What it does

CodeWiki, introduced by Google in November 2025, is an AI-native documentation fabric for Google Cloud customers, currently in public preview at codewiki.google. It revolutionizes code documentation by using a Gemini-powered system to scan entire repositories after every commit, regenerating hyperlinked documentation and injecting diagrams to ensure engineers always have current and accurate information. Each CodeWiki page includes a Gemini chat agent that answers natural-language questions using the documentation as context, accelerating onboarding for new contributors, SREs, and auditors. Google is also developing a Gemini CLI extension for local use, extending CodeWiki's automation to private or air-gapped repositories.

Core features

✦Automated, Always-Current Docs
✦Gemini AI Chat
✦Interactive Navigation
✦Live Visual Diagrams

Use cases

→Accelerate onboarding for new contributors by distilling repo intent and dependencies.
→Enable senior developers to rapidly understand unknown libraries through diagrams and hyperlinked docs.
→Ensure continuous synchronization of architecture, class, and sequence diagrams with current code.
→Provide unified natural-language Q&A about the codebase via the Gemini agent.
→Extend automated documentation workflows to private or air-gapped repositories using the Gemini CLI extension.