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Visual accessibility inspector. WCAG contrast, touch targets, heading audits, screenshots.
About
Visual accessibility inspector. WCAG contrast, touch targets, heading audits, screenshots.
Security Report
lo-eyes is a well-intentioned accessibility auditing MCP server with appropriate permissions for its purpose. Code quality is good with proper input validation and error handling. The server has a hardcoded BASE_URL in one file (server.py) pointing to likeone.ai, which is a minor concern but appears to be a development artifact rather than a security risk. Permissions align well with the stated purpose of visual testing and accessibility auditing. Supply chain analysis found 4 known vulnerabilities in dependencies (0 critical, 2 high severity). Package verification found 1 issue.
7 files analyzed · 10 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-sophiacave-lo-eyes": {
"args": [
"lo-eyes"
],
"command": "uvx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
lo-eyes
Visual frontend accessibility inspector MCP server. WCAG contrast checking, touch target validation, heading hierarchy audits, responsive screenshots, and S+ grading across mobile and desktop viewports.
Built by Like One Foundation (501(c)(3) nonprofit). Works with any site by changing BASE_URL.
Tools
| Tool | Description |
|---|---|
eyes_screenshot | Viewport-sized screenshot at any device preset |
eyes_scan | Auto-chunk full page into readable viewport pieces with RAG manifest |
eyes_audit | Responsive + accessibility audit with S+ grading |
eyes_devices | List available device presets |
Device Presets
| Name | Viewport | Type |
|---|---|---|
iphone-se | 375x667 | Mobile |
iphone-14 | 390x844 | Mobile |
ipad | 768x1024 | Tablet |
laptop | 1280x800 | Desktop |
desktop | 1440x900 | Desktop |
Audit Checks
- Overflow: Elements exceeding viewport width (respects scroll parents)
- Font size: Text below 12px minimum
- Touch targets: Interactive elements below Apple HIG 44px minimum
- Heading hierarchy: Skipped heading levels (h1 -> h3)
Grading
| Grade | Criteria |
|---|---|
| S+ | Zero issues |
| A | 1-5 medium, zero high |
| B | 6+ medium, zero high |
| C | 1-2 high |
| D | 3-5 high |
| F | 6+ high |
Setup
cd lo-eyes
python3 -m venv .venv
source .venv/bin/activate
pip install playwright mcp
python3 -m playwright install chromium
Usage
As MCP Server (Claude Code)
Add to .mcp.json:
{
"mcpServers": {
"lo-eyes": {
"command": "/path/to/lo-eyes/.venv/bin/python3",
"args": ["/path/to/lo-eyes/server.py"]
}
}
}
As CLI
./lo-eyes audit / # Audit homepage
./lo-eyes screenshot /blog/ --device ipad # iPad screenshot
./lo-eyes scan / --device iphone-14 # Full-page chunked scan
./lo-eyes responsive /academy/ # All 5 viewports
Stack
- Python 3
- Playwright (headless Chromium)
- MCP SDK (FastMCP, stdio transport)
License
MIT
Built with love by Like One.
Reviews
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