RenderLens

Created By
NicolaDonadoni3 months ago
Give your AI coding agent eyes. RenderLens is an MCP server with 3 tools: render (code → screenshot), audit (Lighthouse + WCAG accessibility), diff (pixel-level visual comparison). Free during beta — 100 calls/month, no API key, no signup.
Overview

What is RenderLens?

An MCP server that gives your AI coding agent eyes. Instead of writing UI code blind, your agent can verify what it builds visually.

Tools

render

Send HTML or React code, get back a screenshot. Supports custom viewports, full-page capture, and framework auto-detection.

audit

Run Lighthouse + WCAG accessibility audits on any code. Returns violations, passes count, and scores.

diff

Compare two versions of UI code pixel-by-pixel. Returns a diff image and percentage of changed pixels.

Quick Setup

Works with Claude Code, Claude Desktop, Cursor, Windsurf, and any MCP client.

Features

  • No API key, no signup — just paste the config and go
  • 100 free calls/month during beta
  • Playwright-powered rendering
  • GDPR compliant (no code stored, IPs anonymized)

Server Config

{
  "mcpServers": {
    "renderlens": {
      "type": "streamable-http",
      "url": "https://app.renderlens.dev/mcp"
    }
  }
}
Project Info
Created At
3 months ago
Updated At
3 months ago
Author Name
NicolaDonadoni
Star
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Language
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License
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Category

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