pr-gfm-validator

GitHub Flavored Markdown links break on feature branches because repo-relative paths like /path/to/file.md don't resolve correctly. This Skill converts those links to branch-specific blob URLs, preventing 404 errors when reviewers visit the PR page.

The validator detects repo-root links (/path/to/file.md), relative paths (./relative/path.md and ../parent/path.md), and converts them to branch-aware blob URLs. It skips absolute URLs, in-page anchors, and mailto links to preserve their original behavior.

Run validation during PR creation and editing workflows—before running gh pr create or gh pr edit—to catch repo-relative links on your current branch and fix them automatically before submission.

Yes, the Skill provides ready-to-run preflight validation that scans PR bodies, identifies repo-relative links, and applies fixes automatically while preserving external links and other link types unchanged.

The Skill gathers repository context—owner, repo name, and current branch—to construct accurate blob URLs and replace matched repo-relative links with branch-specific paths that resolve correctly in PRs.