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Comprehensive guidelines for building secure, performant Chrome extensions with Manifest V3. \n \n Covers full extension architecture including background Service Workers, content scripts, popup UI, and inter-component messaging with security best practices \n Emphasizes Manifest V3 compliance, least-privilege permissions, Content Security Policy implementation, and protection against XSS and injection attacks \n Includes Chrome API patterns for storage, tabs, runtime, alarms, and actions; async

Vision-driven browser automation using your real Chrome browser, preserving sessions and login state. \n \n Operates entirely from screenshots without requiring DOM access; interacts with all visible elements regardless of technology stack \n Connects to desktop Chrome via Midscene Extension through Chrome DevTools Protocol, never taking over mouse or keyboard \n Supports multi-step workflows including navigation, form filling, data extraction, UI testing, and screenshot capture \n Requires visu

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Expert-level browser automation, debugging, and performance analysis via Chrome DevTools protocol. \n \n Four tool categories cover navigation, interaction, debugging, and performance profiling across 25+ commands \n Snapshot-first workflow provides element UIDs for reliable targeting; screenshots offer visual verification \n Network request inspection, console message analysis, and JavaScript evaluation support troubleshooting and validation \n Performance tracing with Core Web Vital analysis i

Comprehensive UX/UI design guide for Chrome Extensions, optimized for Manifest V3. Contains 42 rules across 8 categories, prioritized by impact to guide extension UI development and code review.

Comprehensive performance and code quality guide for Chrome Extensions (Manifest V3). Contains 67 rules across 12 categories, prioritized by impact to guide automated refactoring and code generation.

Puppeteer-based browser automation with JSON output, screenshot compression, and performance analysis. \n \n Includes 10+ scripts for navigation, screenshots, clicking, form filling, JavaScript execution, element discovery, console monitoring, network tracking, and Core Web Vitals measurement \n Automatic screenshot compression using ImageMagick keeps files under 5MB for API compatibility; supports custom size thresholds and format options \n Supports command chaining by keeping browser sessions

Diagnose and resolve Claude in Chrome MCP extension connectivity conflicts on macOS. \n \n Addresses the primary issue: Claude.app (Cowork) and Claude Code CLI use competing native messaging hosts with incompatible socket formats; fix by disabling one config and restarting both Chrome and Claude Code \n Provides quick diagnosis commands to identify which native host is running, locate socket files, and verify active configurations \n Includes a toggle script to switch between Claude.app and Clau

Lightweight Chrome DevTools Protocol CLI. Connects directly via WebSocket — no Puppeteer, works with 100+ tabs, instant connection.

Chrome DevTools integration for debugging, performance analysis, and browser automation via MCP. \n \n Provides tools for page navigation, element inspection via snapshots, clicking, form filling, screenshot capture, and JavaScript evaluation \n Operates on a persistent Chrome profile with automatic browser startup; switch between multiple pages using list_pages and select_page \n Supports efficient workflows: navigate, wait for content, take snapshots to identify elements by uid , then interact