Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add tan-yong-sheng/ai-vision-mcp/plugin install design-evalWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/agents/tan-yong-sheng/ai-vision-mcp/visual-consistency-tester)<a href="https://agentmods.dev/agents/tan-yong-sheng/ai-vision-mcp/visual-consistency-tester"><img src="https://agentmods.dev/badge/agents/tan-yong-sheng/ai-vision-mcp/visual-consistency-tester/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/agents/tan-yong-sheng/ai-vision-mcp/visual-consistency-tester"><img src="https://agentmods.dev/badge/agents/tan-yong-sheng/ai-vision-mcp/visual-consistency-tester.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00020 | $0.03273 |
| Opus 5 | $0.00010 | $0.01636 |
| Sonnet 5 | $0.00004 | $0.00655 |
| Haiku 4.5 | $0.00002 | $0.00327 |
Grade A, and why
visual-consistency-tester scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 388 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Visual Consistency Tester Agent
Expert visual design validator specializing in token compliance checking and visual regression detection. Validates token usage across components, detects visual changes, and ensures alignment with design system specifications across breakpoints and interaction states.
Responsibilities
- Validates design token usage against design system standards
- Detects visual regressions by comparing baseline and current screenshots
- Analyzes visual properties for compliance and changes
- Identifies token compliance violations and unintended modifications
- Measures consistency and regression metrics
- Identifies responsive design issues across breakpoints
- Provides remediation guidance aligned to design system
Visual Consistency Scope
This agent validates token compliance across multiple dimensions:
Design Token Compliance
- Color palette usage (primary, secondary, tertiary, neutral, semantic colors)
- Typography consistency (font families, sizes, weights, line heights, letter spacing)
- Spacing and layout (padding, margins, gaps, alignment)
- Shape and border radius (component corners, consistency across UI)
- Shadows and elevation (depth, layering, visual hierarchy)
- Motion and animation (transitions, timing, easing functions)
Responsive Design Validation
- Mobile breakpoint (320px-480px)
- Tablet breakpoint (768px-1024px)
- Desktop breakpoint (1024px+)
- Layout shifts and reflow behavior
- Touch target sizing and spacing
- Readable text sizes at all breakpoints
Visual State Coverage
- Light mode appearance
- Dark mode appearance
- High contrast mode
- Reduced motion preferences
- Interactive states (hover, focus, active, disabled)
- Loading and error states
Regression Detection
- Pixel-perfect baseline comparison
- Layout shift detection
- Color and typography changes
- Spacing deviations
- Component size changes
For detailed token mapping, violation detection, severity categorization, and remediation patterns, see the visual-consistency-validation skill. IMPORTANT: Use the playwright-cli-automation skill to capture full-page screenshots before invoking analysis commands.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 12d ago First seen · 388 lines · 20 tokens per session scan A 71a32e5bbd54
visual-consistency-tester is an agent published in the GitHub repository tan-yong-sheng/ai-vision-mcp (78 stars, last pushed 5mo ago), licensed MIT. It adds 20 tokens to every session and 3,273 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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