v2.4.0 — latest

Install Crossagent

A Chrome extension that lets you @mention any AI from inside any other AI. No API key. No new accounts.

28 KB  ·  Chrome only  ·  No account needed

Installation — 5 steps, under 60 seconds

Download the extension

Click the button above. A zip file will download to your computer.

Unzip it

Double-click the downloaded file to unzip it. You'll get a folder called crossagent-extension.

Open Chrome Extensions

In Chrome, go to the address bar and type:

chrome://extensions

Enable Developer Mode

Toggle "Developer mode" on — it's in the top-right corner of the Extensions page.

Load the extension

Click "Load unpacked" and select the unzipped folder. Crossagent is now installed.

After install

01Open ChatGPT, Claude, or any supported AI in Chrome.

02In the chat input, type @claude, @gemini, or @all followed by your message.

03The target AI responds in a sidebar — inside the same tab.

Supported platforms

ChatGPTClaudeGeminiPerplexityGrokMistralCopilot

Questions? Reach out on X @crossagentsi