BridgeAI

Switch AI. Keep your progress.

Carry a reviewed project brief, pinned messages, and exact working material between ChatGPT, Claude, and Gemini—even when your current AI has hit its limit.

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✨ Features

• Portable project memory — edit your goal, requirements, current decisions, progress, and next action.
• AI-drafted brief — ask your current AI to draft the brief from the conversation, review the filled fields, and undo if needed.
• Ready in the destination — the handoff is placed straight into the new chat's input box. You review it and press send.
• Full history — load older messages that long chats only show after scrolling up. Guessed speaker labels are flagged, never hidden.
• Exact working material — carry code, drafts, calculations, and errors without a per-message cutoff.
• Pinned evidence — preserve full messages with their platform, conversation link, and message number.
• Review before transferring — preview the exact prompt and see which recent messages will not fit.
• Whole-message budgets — choose 12,000, 24,000, or 60,000 characters. Protected material is never silently shortened; transfers block if it exceeds the budget.
• Local and API-free — saved projects remain in this browser until you delete them. Pending transfers expire after five minutes.

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🎯 Supported Platforms

Platform	URL	Status
ChatGPT	chat.openai.com, chatgpt.com	✅
Claude	claude.ai	✅
Gemini	gemini.google.com	✅

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🚀 Installation

From the Chrome Web Store

Install BridgeAI from the Chrome Web Store.

From Source

Use Node.js 22.13+ (or a current Node.js 24+ release) for the development and test toolchain.

1. Clone the repository

   git clone https://github.com/Anujsuthar004/Bridge-ai.git
   cd Bridge-ai
   

2. Install dependencies

   npm install
   

3. Build the extension

   npm run build
   

4. Load in Chrome

   • Open chrome://extensions
   • Enable "Developer mode"
   • Click "Load unpacked"
   • Select the build/chrome-mv3-prod folder

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🎮 Usage

1. Open a conversation and click Transfer · Keep context.
2. Start a project or explicitly select a saved one. Update its brief and replace decisions that are no longer current, or click Ask … to draft it, send the request, then click Fill brief once the reply finishes and review the fields.
3. Pin important messages and paste any exact working material. The first user request is included by default; you can remove it.
4. Review the full transfer preview and any omission notice. Increase the budget or pin an omitted message if it matters.
5. Click Continue in Claude / Gemini / ChatGPT. The project is saved locally before opening the destination.
6. In the destination tab, the context is inserted into the chat box automatically. Review it and press send. If the chat box already has text or can't be found, use Insert into chat or Copy context instead.
7. For the next switch, select the same saved project and update its progress. Its original request and pins remain intact. Previous handoff envelopes for that project are excluded from recent history to prevent nesting.

Save memory persists edits without transferring. Copy context saves the project and copies the handoff without opening a tab. Delete saved project removes that project's saved memory; it cannot retract text already pasted into another service.

Capture limitations

Only text present in the page DOM is captured. Use Load earlier messages in the editor to pull in older messages from long chats. Images, attached files, hidden messages, and provider-side memory are not transferred. Re-upload files at the destination. Platform DOM changes can require adapter updates.

Project memory is only what you write or approve. Ask … to draft it has your current AI suggest a brief, but nothing is filled in until you click Fill brief, and you can review, edit or undo the result. BridgeAI never summarizes in the background. Selected code retains its captured whitespace, but this is not a byte-for-byte export of original uploaded files. Budgets measure JavaScript string length, not tokens or provider quotas.

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🏗️ Tech Stack

• Framework: Plasmo - Chrome extension framework
• UI: React 18 + TypeScript
• Styling: Tailwind CSS
• Storage: Chrome Local Storage API

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📁 Project Structure

bridge-ai/
├── assets/             # Logo and extension icon
├── adapters/           # Platform-specific adapters
│   ├── ChatGPTAdapter.ts
│   ├── ClaudeAdapter.ts
│   └── GeminiAdapter.ts
├── components/         # React UI
│   └── MemoryEditor.tsx
├── contents/           # Content scripts
│   └── transfer-ui.tsx
├── lib/                # Utilities
│   ├── briefDraft.ts         # Asks the current AI for a brief, parses the reply
│   ├── contextEngine.ts      # Builds the handoff prompt
│   ├── insertText.ts         # Puts the handoff into the destination chat box
│   ├── loadHistory.ts        # Scrolls up to load older messages
│   ├── messageText.ts        # Reads chat text, keeps code whitespace
│   ├── pendingTransfers.ts   # Per-tab pending handoffs (5-minute TTL)
│   ├── projectMemory.ts
│   ├── scrape.ts             # Collects messages in page order
│   └── storage.ts
├── tests/              # Unit and Playwright browser checks
├── background.ts       # Service worker
├── popup.tsx           # Extension popup
└── style.css           # Global styles

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🛠️ Development

# Start development server
npm run dev

# Build for production
npm run build

# Package for distribution
npm run package

# Test context retention, DOM extraction, and storage
npm test
npm run typecheck

# Browser checks against controlled platform fixtures (after building)
npx playwright install chromium
npm run test:browser

# Live check against the real Gemini site (runs daily in GitHub Actions)
npm run test:live

If BridgeAI can't find the chat box or the messages on a page, it says so in the editor with a Report a problem link that opens a prefilled GitHub issue (site, page type and versions only, never chat content).

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🔒 Privacy

• No BridgeAI backend - No conversations are sent to a BridgeAI server. When you submit a handoff, the destination AI receives that text.
• No external servers - All processing is local
• Scoped permissions - Host access is limited to the supported AI sites.

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📄 License

MIT License - see LICENSE for details.

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🤝 Contributing

Contributions welcome! Please open an issue or submit a PR.

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