Lo Eyes

Visual accessibility inspector. WCAG contrast, touch targets, heading audits, screenshots.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Not yet automatically verified

We haven't yet run this listing's install command through our automated sandbox check. This isn't a red flag — we're steadily working through the catalog.

Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

{
  "mcpServers": {
    "lo-eyes": {
      "command": "uvx",
      "args": [
        "playwright"
      ]
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Capabilities & Tool Schemas (4)Self-reported

Inspect callable tools, capabilities, and parameters exposed to AI agents by Lo Eyes.

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

Documentation Overview

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

bash

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:

config.json

{
  "mcpServers": {
    "lo-eyes": {
      "command": "/path/to/lo-eyes/.venv/bin/python3",
      "args": ["/path/to/lo-eyes/server.py"]
    }
  }
}

As CLI

bash

./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.

Read the full README →View source on GitHub →

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Adoption & maintenance

Factual signals from GitHub, npm, and our automated checks — not a rating.

Last commit

3mo ago

Most recent push to the default branch.

Tools exposed

Callable tools this server registers over MCP.

Reviews

No reviews yet — be the first to share how this listing worked for you.

Frequently Asked Questions about Lo Eyes

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "lo-eyes": { "command": "npx", "args": ["-y", "lo-eyes"] } }

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Technical Specs & Signals

CategoryDeveloper Tools

47Quality signal: Fair · 47/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership10/20

Documentation & tools24/30

Adoption & activity1/15

Community engagement0/10

A guidance signal from public completeness & health data — not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.

★ Featured

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MCP & Agent Skills for Automated Documentation, and codebase conventions + context

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Documentation Overview

lo-eyes

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

bash

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:

config.json

{
  "mcpServers": {
    "lo-eyes": {
      "command": "/path/to/lo-eyes/.venv/bin/python3",
      "args": ["/path/to/lo-eyes/server.py"]
    }
  }
}

As CLI

bash

./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.