Update Screenshots Agent Skill
Download screenshot baselines from the latest CI run and commit them. Use when asked to update, accept, or refresh component screenshot baselines from CI, or after the screenshot-test GitHub Action reports differences. This skill should be run as a subagent.
Install
one command, takes just this skill from the repositorynpx skills add https://github.com/microsoft/vscode --skill update-screenshotsWhat it tells the agent to use
found in the instruction textThe instruction itself
3 sections, as written by the authorUpdate Component Screenshots from CI
Screenshot baselines are no longer stored in the repository. They are managed by an external screenshot service (hediet-screenshots.azurewebsites.net). The CI workflow uploads screenshots to this service and diffs them automatically.
When the Checking Component Screenshots GitHub Action detects changes, it posts a PR comment with before/after comparisons. No manual baseline updates are needed — the screenshots on the main branch commit become the new baselines automatically after merge.
What Changed
- Baseline images were removed from
test/componentFixtures/.screenshots/baseline/. - Git LFS is no longer used for screenshot storage.
- The screenshot service stores images keyed by commit SHA and handles diffing.
If Screenshots Need Investigation
- Check the PR comment posted by the CI workflow for visual diffs.
- Download the
screenshotsartifact from the CI run for the raw captured images:
gh run download <run-id> --name screenshots --dir .tmp/screenshots
- Compare locally if needed. The artifact contains the full set of captured screenshots.
Other skills for the same job
different authors, same section of the catalogue
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How to use it
Take microsoft/update-screenshots from the repository into ~/.claude/skills for personal
use, or into .claude/skills inside a project.
The agent identifies a skill by the name field in its header. Two skills with the
same name cannot sit side by side — one of them will be ignored.