What is AlliHat?
AlliHat is a Claude Safari extension that puts a Claude AI sidebar directly inside Safari on Mac. It reads the page you’re on and lets you ask questions about it without switching tabs or copying text anywhere. The Claude Safari extension covers a wide range of on-page tasks: summarizing articles, explaining highlighted text, automating browser actions, and running saved workflows. It connects directly to Anthropic using your own API key and stores everything locally on your Mac.
Features & Benefits
- Page Understanding: Read the content of any open page and answer questions about it without requiring any text to be copied or transferred.
- Text Explanation: Explain any highlighted text on a page, including code, legal language, and academic writing, using a right-click context menu.
- Agent Mode: Click buttons, fill out forms, scroll, and navigate pages on your behalf based on plain instructions.
- Saved Workflows: Build reusable sequences for repeated tasks and run them with a single click.
- Memory: Retain your stated preferences, role, and writing style across sessions so you don’t repeat yourself each time.
- Chat History: Persist conversations per URL so you can return to a previous exchange on the same page after closing Safari.
- Keyboard Shortcut: Open the sidebar at any time with ⌘⇧C without leaving the current page.
- Local Data Handling: Run entirely on your Mac with your API key stored in Safari and requests sent directly to Anthropic, with no intermediary servers or analytics.
What can AlliHat do?
- Summarize a web page without copying text
- Explain highlighted text on a webpage
- Explain legal language on a website
- Fill out a web form automatically
- Ask Claude questions about a webpage
- Save and reuse browsing workflows
- Remember preferences across chat sessions
- Resume a previous conversation on a webpage
- Explain code snippets on a webpage
- Navigate a website using AI instructions
Real-World Applications
Someone reading a long research article may use the Claude Safari extension to get a plain-language summary without leaving the page. Instead of opening a new tab and pasting content, the sidebar already sees the page and can answer questions on the spot. The ⌘⇧C shortcut opens it without breaking reading focus.
A freelancer reviewing contracts online might highlight dense legal clauses and get a clear breakdown of what each section actually means. The Safari AI extension handles legal and technical language the same way it handles anything else on the page.
Someone who fills out the same web forms repeatedly can set up a saved workflow to handle it in one click. Agent Mode can interact with page elements directly, so repetitive browser tasks don’t require the same manual steps each time.
A writer or researcher who prefers a consistent output style can store their preferences once using the memory feature. The Claude Safari extension picks those up in every future session, and conversations are saved by URL so prior context on a given page is still there on the next visit.
