Doncheli Visual Test
Run visual regression tests by comparing UI screenshots against baselines. Activate when user mentions "visual test", "screenshot", "UI regression", "visual diff", "pixel diff", "visual snapshot".
Install
$ agentstack add skill-doncheli-don-cheli-sdd-doncheli-visual-test ✓ scanned · ✓ verified — works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
About
Don Cheli: Visual Test
Instructions
- Detect the visual testing tool in use: Playwright, Cypress, Percy, Chromatic, Storybook, or custom
- Run the visual test suite and capture screenshots of the current state
- Compare against the stored baseline snapshots
- Report each visual difference:
- Component / page name
- Diff percentage (pixels changed vs. total)
- Category: layout shift, color change, missing element, new element
- Classify severity:
- > 5% diff → blocker (likely regression)
- 1-5% diff → warning (review required)
- .md`
Output Format
## Visual Test Report — 2026-03-28T15:00Z
### Summary
- Compared: 24 snapshots
- Passed: 21
- Diffs: 3 (1 blocker, 2 warnings)
### Blocker 🔴
- CheckoutPage/desktop — 12.3% diff
Category: layout shift — payment form moved 40px down
Baseline: .visual/baselines/checkout-desktop.png
Current: .visual/current/checkout-desktop.png
### Warnings 🟡
- Button/primary — 2.1% diff — color shift (likely theme variable change)
- NavBar/mobile — 1.8% diff — font rendering difference (check font loading)
### New Snapshots (approval required)
- VoiceModal/desktop — no baseline found — run with --approve to set baselineSource & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: doncheli
- Source: doncheli/don-cheli-sdd
- License: Apache-2.0
- Homepage: https://doncheli.tv
Install and usage instructions live in the source repository linked above.
Reviews
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Versions
- v0.1.0 Imported from the upstream source.