Coverage

Fetch line-by-line coverage information from Codecov for a GitHub pull request.

Instructions

Use this skill to check code coverage for your changes before merging.

Current branch (auto-detect PR)

uv run scripts/codecov_diff.py

This auto-detects the org, repo, and PR number using the gh CLI based on the current branch.

Specific PR number

uv run scripts/codecov_diff.py 123

Output

The script outputs:

• PR title and state
• HEAD coverage (overall coverage on the branch)
• Patch coverage (coverage of changed lines only)
• Coverage change (+/- percentage)
• Per-file breakdown with:
  • Missed line count
  • Patch coverage percentage
  • Specific uncovered line numbers (as ranges like 45-48, 52, 60-65)
  • Partial coverage line numbers

Requirements

• The gh CLI must be installed and authenticated for auto-detection
• The PR must have Codecov coverage data uploaded