Customaise: AI Userscript & Agentscript Manager. Powered by MCP & WebMCP

Custom programmable tools for every open tab. For you, or for your AI.

Why are you fighting your own browser? You spend hours scrolling past bad layouts, clicking the same buttons, and suffering interfaces you can't change. Customaise fixes that. Tell it what you want in plain English (or any language you prefer) and an autonomous AI agent writes, tests, and deploys a script that runs locally in your browser. No coding required. 🤖 AI That Actually Works Customaise is powered by a Gemini AI agent that: • Plans, writes, tests, and deploys code for you • Sees your page structure and self-corrects on failure • Explains what your code does, so you learn as you go • Supports 50+ languages, so you can describe changes in your own words ⚡ Solve Everyday Frustrations ✅ Click Autopilot: turn 47 daily clicks into one ✅ Data Liberation: that table with no export? Now it has one ✅ Instant Prototype: show stakeholders the fix, not a slide deck ✅ Keyboard First: add hotkeys to tools that forgot them ✅ Restyle anything: hide distractions, add dark modes, fix layouts 🔒 Zero Risk. Infinite Undo. We never touch the site's source code. Your changes float in a safe layer above the page. Messed up? Slide the timeline back. One click restores everything. • Automatic version history (Wayback Machine) • Every edit creates a restore point • One-click undo to any previous version 🛡️ Your Data Isn't Ours. It Never Was. • Stored locally in your browser, not our servers • Conversations encrypted on-device • No AI training on your data (we use paid Gemini APIs) • BYOK security: bring your own API key, encrypted via Cloud KMS • One click deletes everything, permanently 🛠️ Professional Tools • Monaco editor (the VS Code engine) with syntax highlighting • Visual DOM element picker: point, click, customise • AI-powered debugging from your console logs • Full Tampermonkey/Greasemonkey import support • GM_* and VM_* API compatibility 📱 Power User Upgrade • Cross-device sync for all your scripts • Gemini Pro for deeper reasoning • Priority support and early access to new features • BYOK for unlimited AI at your own API cost Works in any language. Built on Manifest V3 for security and performance. Stop browsing. Start customaising. Safely, intelligently, and on your terms. Free forever with 200K monthly AI tokens. Learn more: https://customaise.com