Agent-Skills.md

Agent Skills: github-images

Download images from GitHub issues and PRs using authenticated signed URLs. Use when a user shares a GitHub issue/PR URL and the agent needs to view screenshots or image attachments, especially from private repos, or asks to "grab the screenshots from that issue" or similar.

UncategorizedID: connorads/dotfiles/github-images

Repository

connorads/dotfiles
connorads
142

Install this agent skill to your local

pnpm dlx add-skill https://github.com/connorads/dotfiles/tree/HEAD/.config/skills/personal/github-images

Skill Files

Browse the full folder contents for github-images.

Download Skill

Loading file tree…

.config/skills/personal/github-images/SKILL.md

Skill Metadata

Name
github-images
Description
Downloads images from GitHub issues and PRs using authenticated signed URLs. Use when a user shares a GitHub issue/PR URL and the agent needs to view screenshots or image attachments, especially from private repos, or asks to "grab the screenshots from that issue" or similar.

github-images

Download image attachments from GitHub issues and pull requests, including private repos that require authentication.

Usage

# From a full GitHub URL
ghimg https://github.com/owner/repo/issues/39

# From a PR URL
ghimg https://github.com/owner/repo/pull/42

# Using owner/repo and number separately
ghimg owner/repo 39

# Custom output directory
ghimg owner/repo 39 -o ./screenshots

# Print signed URLs only (pipe-friendly)
ghimg owner/repo 39 --urls-only

Default output: /tmp/ghimg/<owner>/<repo>/<number>/

After downloading, use Read to view the images.

Manual fallback

If ghimg is unavailable, use gh api directly:

# Fetch body_html with signed image URLs (valid ~5 min)
gh api repos/owner/repo/issues/39 \
  -H "Accept: application/vnd.github.full+json" \
  --jq '.body_html'

# Fetch comment images too
gh api repos/owner/repo/issues/39/comments \
  -H "Accept: application/vnd.github.full+json" \
  --paginate --jq '.[].body_html'

# Download a signed URL
curl -sL -o image.png "https://private-user-images.githubusercontent.com/..."

The key insight: application/vnd.github.full+json returns body_html containing JWT-signed URLs for private image attachments. These URLs expire after ~5 minutes.

Limitations

ghimg queries only the issue/PR body and issue comments — images in PR inline (review) comments and review summaries are not fetched. Get those manually with the same Accept header:

gh api repos/owner/repo/pulls/42/comments \
  -H "Accept: application/vnd.github.full+json" \
  --paginate --jq '.[].body_html'

gh api repos/owner/repo/pulls/42/reviews \
  -H "Accept: application/vnd.github.full+json" \
  --paginate --jq '.[].body_html'