Chrome AI Extension Skill

Create Chrome extensions that leverage Chrome's built-in AI capabilities for on-device machine learning without external API calls.

Chrome AI APIs Overview

Chrome provides several built-in AI APIs that run locally on-device:

• LanguageModel API (Prompt API): General-purpose LLM for conversational AI and text generation using Gemini Nano
• Summarization API: Specialized for text summarization
• Translation API: Language translation
• Writer API: Assisted writing and content generation

Note: The API is experimental and evolving. In current Chromium builds the exposed surface for extensions is the global LanguageModel object inside page contexts (content scripts, popups, etc.); the chrome.ai namespace is not wired up for service workers yet.

Quick Start - Working Example

Here's a working pattern that matches what currently ships in Canary/Dev (127+):