TL;DR

Quercle Chat is an open source AI chat interface that runs entirely in your browser. No backend, no server storing your conversations - everything stays local. Use any OpenRouter model with persistent conversations, real-time streaming, and web capabilities powered by Quercle.

Links:

What is Quercle Chat?

Quercle Chat is a fully client-side AI chat interface built with Next.js. Unlike proprietary chat services that store your data on their servers, Quercle Chat runs entirely in your browser - your API keys, conversations, and settings never leave your machine.

Use any model available on OpenRouter - from GPT-4 to Claude to open source models like Llama and Mistral.

Key Features

100% Client-Side - Runs entirely in your browser, no backend server
Your Data Stays Local - API keys, conversations, and settings stored in your browser only
Model Flexibility - Connect to any OpenRouter model with a single API key
Persistent Conversations - All chats saved locally using IndexedDB (Dexie.js)
Real-time Streaming - Watch responses stream in as they're generated
Tool Calling Visualization - See AI agent tool usage with detailed cards
Thinking Process Display - Collapsible reasoning blocks show the AI's thought process
Web Capabilities - Built-in web search and fetch tools powered by Quercle
Dark Mode UI - Beautiful dark theme with Tailwind CSS
Mobile Responsive - Works seamlessly on desktop and mobile

Tech Stack

Component	Technology
Framework	Next.js (App Router)
Runtime	Bun
Styling	Tailwind CSS 4
UI Components	Radix UI + shadcn/ui
Database	IndexedDB (Dexie.js)
AI SDK	@quercle/ai-sdk, @openrouter/ai-sdk-provider

Getting Started

Head to chat.quercle.dev and start chatting:

Click the settings icon in the header
Enter your OpenRouter API key (for AI models)
Enter your Quercle API key (for web search and fetch tools)
Select a model
Start chatting!

All settings are stored locally in your browser - no server-side storage needed.

Web Tools Integration

Quercle Chat comes with built-in web search and fetch tools powered by Quercle. The AI can:

Search the web and synthesize answers with citations
Fetch and analyze web pages with custom prompts
Research topics across multiple sources

This makes it ideal for research, fact-checking, and staying up-to-date on current events.

Why Open Source?

We built Quercle Chat to demonstrate what's possible with Quercle's web tools and the AI SDK. By open sourcing it, we hope to:

Provide a reference implementation for developers building AI chat interfaces
Show how to integrate web search and fetch capabilities into chat applications
Give users more control over their data - your API keys and conversation history stay in your browser, not on a third-party chat service's servers (though conversations are still sent to OpenRouter and model providers)

Contributions are welcome! Feel free to submit PRs for new features or improvements.