GitHub PR stacks

Use this skill for dependent pull requests. Read maintenance and recovery before changing an existing published stack or operating its CI/review queue. Use the pull-request skill for labels, signing, descriptions, and release documentation.

Discover the tool and the actual stack

Start with gh stack --help and the relevant subcommand's --help; commands and supported flags can change. If the extension is missing, identify github/gh-stack as the required extension (gh extension install github/gh-stack). Follow the environment's installation permissions; do not silently replace native stacks with an unregistered branch chain.

A feature branch based on another feature branch is only a dependency chain. GitHub's native stack is a separate object. Creating PRs with gh pr create --base <parent> alone does not register that object. Check both the configured base branches and native stack membership. A bottom PR may target main and still belong to a stack; also look for open PRs based on its head branch.