What is Google Code Wiki? An AI wiki for open-source repos: is it free, private repos and Gemini CLI
On Google Code Wiki (codewiki.google) you open a public GitHub repository, read the AI-generated wiki, diagrams and code-linked documentation, and chat about the repo. Access is completely free for public, open-source repositories. Only GitHub is supported (GitLab and Bitbucket are planned). Trying it with your own private repo is “Coming Soon”: there is a waitlist for the Gemini CLI extension, with no price or date. Wikis are updated periodically.
- What it does
- Generates a wiki and diagrams for a GitHub repo
- Free
- Yes; for public repositories
- Repositories
- GitHub only, public
- Private repos
- Not yet (Coming Soon)
- Turkish
- Not stated in official sources
What is Google Code Wiki for? Private repos and Gemini CLI
Instead of browsing file by file to understand an open-source project's code, Code Wiki uses AI to generate a wiki for the repository: sections that explain the structure, diagrams, code-linked explanations and a chat where you can ask questions about the repo. For a repo that has no wiki yet, you send a request with “request a repo”.
!Private repository support is not available yet: the home page says “Try it with your own private repository: Coming Soon”. There is a waitlist for the Gemini CLI extension (the link goes to a Google Developer Program badge page); whether the extension has launched, its price and its date are not stated. No source mentions an official MCP server.
Who it helps: developers who want to understand a project's structure quickly before contributing to an open-source project.
Is Google Code Wiki free? Which repositories are supported?
| Public GitHub repositoriesYes | FAQ: access to codewiki.google is completely free for public, open-source repositories. |
|---|---|
| GitLab, BitbucketNo | “Planned for the future”; GitHub only for now. |
| Private repositoriesNo | Not yet; the Gemini CLI extension is on a waitlist. |
The announcement blog post from November 2025 uses the phrase “public preview”; today's home page and FAQ don't say this (only the video component on the page carries a “Beta” label). The official sources don't state the sign-in and limit conditions for chat, the list of covered repositories or a repository size limit. There is no local-currency price or commercial-use statement either.
How does Code Wiki use my data? Turkish support
Because it processes public repositories, the code is already public. Retention period, use of chat data and an opt-out address are not clear in the official sources; the address in the FAQ appears empty.
No official source covers a Turkish interface, Turkish answers or Turkish audio.
How up to date is Code Wiki?
The announcement blog and the home page say the wiki updates on every change or pull request merge; the FAQ says updates are periodic and the frequency varies by project. A sample wiki (python-sdk) showed “Updated on Sep 24, 2026”, so it was about three weeks old. It may differ from the latest code; for critical decisions, check the code in the repository.
This section is based on codewiki.google as shown in the browser.
Frequently asked questions
What is Google Code Wiki and what is it for?
A Google service (codewiki.google) that uses AI to generate a wiki, diagrams and chat for public GitHub repositories.
Is Google Code Wiki free?
Yes, access is completely free for public, open-source repositories.
Does Google Code Wiki work with private repositories?
Not yet; the home page says “Coming Soon” and there is a waitlist for the Gemini CLI extension.
Does Google Code Wiki support GitLab?
No, GitHub only; GitLab and Bitbucket are planned for the future.
Does the Code Wiki wiki update on every change?
The sources conflict: the blog says every change, the FAQ says periodic updates. A sample wiki was about three weeks old.
Related guides
Sources
Not clear in the official sources: Launch of the Gemini CLI extension · Turkish interface, answers and audio · sign-in and limit terms for chat · list of covered repositories and size limit · opt-out address · an official MCP server · local-currency pricing, commercial use and retention period. Each is covered in its section along with what you can do.