⚡ ContextFlow — AI Context Manager

Capture AI context once. Reuse it everywhere. Forever free.

Stop re-explaining your project to every AI tool you switch to.

Free, open source, unlimited AI context manager. No accounts. No paywalls. Your data never leaves your device.

📦 Install · 📖 How It Works · 🤝 Contribute · 🐛 Report Bug

---

What is ContextFlow?

ContextFlow is a Chrome extension that lets you capture AI conversation context once and reuse it across any AI platform — ChatGPT, Claude, Gemini, Grok, Perplexity, DeepSeek, Mistral, and more. Built as a fully open-source, zero-cost alternative to Capsule Hub.

🧠 One capture. Every AI. Zero friction.

---

Why ContextFlow vs Capsule Hub?

Feature	Capsule Hub	ContextFlow
Price	Freemium (2-3 capsules free, then paid)	100% Free, forever
Capsule limit	Capped on free tier	Unlimited
Account required	Yes	No account needed
Data storage	Uploaded to Tilantra servers	100% local (your device)
Open source	No	Yes (MIT License)
Works on Grok	No	Yes
Works on DeepSeek	Limited	Yes
Works on any AI site	No	Yes (universal)
Edit capsules (clear UI)	Confusing	Simple, clear form
Permissions	High-risk (reads your Gmail, Outlook)	Minimal — no email access
Version history	Yes (paid)	Yes (free, local)
Export data	Limited	Full JSON export/import
Team sharing	Paid	Export JSON and share freely
Offline use	No (server-dependent)	Yes (works offline)

---

Features

🎯 Core

• Capture context from any AI conversation with one click (⚡ button or Ctrl+Shift+S)
• Inject context into any AI chat with one click — works everywhere
• Universal — supports ALL AI platforms, not just 3 or 4
• No sign-in — install and use immediately

📚 Capsule Management

• Unlimited capsules with no paywalls
• Full text search across all capsules
• Tags and platform labels for organization
• Pin important capsules to the top
• Filter by platform (ChatGPT / Claude / Gemini / Grok / etc.)
• Version history (last 10 versions of each capsule)
• Duplicate capsules

🔒 Privacy

• All data stored in chrome.storage.local — never leaves your browser
• No tracking, no analytics, no telemetry
• No external API calls
• No server to go down or change pricing

⚙️ Power Features

• Export all capsules as JSON for backup
• Import JSON (merge or replace mode)
• Context menu — right-click any selected text → "Save to ContextFlow"
• Keyboard shortcuts: Ctrl+Shift+S (capture) | Ctrl+Shift+K (toggle panel) | Ctrl+F (search)
• Works on Chrome, Edge, Brave, Arc (any Chromium browser)

---

Supported AI Platforms

Works on ALL of these out of the box:

Platform	Capture	Inject
ChatGPT	✅ Auto-detect	✅
Claude	✅ Auto-detect	✅
Gemini	✅ Auto-detect	✅
Grok (X.com)	✅ Auto-detect	✅
DeepSeek	✅ Auto-detect	✅
Perplexity	✅ Auto-detect	✅
Microsoft Copilot	✅ Auto-detect	✅
Mistral	✅ Auto-detect	✅
Character.AI	✅ Auto-detect	✅
Poe	✅ Auto-detect	✅
Lovable, Bolt, v0	✅ Auto-detect	✅
Any other AI site	✅ Manual/clipboard	✅ Clipboard

---

Installation

From Source (Developer Mode)

1. Download this repository (Code → Download ZIP) or git clone
2. Open Chrome and go to chrome://extensions/
3. Enable Developer Mode (top-right toggle)
4. Click Load unpacked
5. Select the contextflow-extension folder
6. Done — ContextFlow icon appears in your toolbar

From Chrome Web Store

(Coming soon — currently submit under review)

---

How to Use

Capturing Context

1. Go to any AI chat (ChatGPT, Claude, Gemini, Grok, etc.)
2. Click the purple ⚡ Save Context button (bottom-right of page)
3. Or press Ctrl+Shift+S
4. The conversation is saved as a Capsule instantly

Creating a Capsule Manually

1. Click the ContextFlow icon in your toolbar
2. Click + New Capsule
3. Fill in your title, context content, tags, and platform
4. Click Save Capsule

Injecting Context

1. Open any AI chat you want to reuse context in
2. Click the ContextFlow toolbar icon
3. Find the capsule you want
4. Click ⚡ Inject — the context is inserted into the chat input automatically

Searching

• Click 🔍 or press Ctrl+F to search all capsules
• Searches title, content, tags, and platform

Export / Import

• Click the ↓ (export) button to save all capsules as JSON
• Click the ↑ (import) button to load a JSON backup
• Share your JSON file with teammates — they can import it too

---

Data Format

Capsules are stored as plain JSON. You can edit exports manually:

{
  "version": "1.0.0",
  "exportedAt": "2026-07-02T10:00:00.000Z",
  "capsules": [
    {
      "id": "cf_abc123",
      "title": "React Dashboard Project",
      "content": "👤 User:\nBuild a React dashboard...\n\n🤖 AI:\nHere's the plan...",
      "summary": "Building a React dashboard with TypeScript and Tailwind",
      "tags": ["react", "typescript", "frontend"],
      "platform": "Claude",
      "createdAt": 1751234567890,
      "updatedAt": 1751234567890,
      "version": 1,
      "versions": []
    }
  ]
}

---

Contributing

PRs welcome! See CONTRIBUTING.md for the full guide.

Areas where help is especially appreciated:

• 🔌 Extractors for more AI platforms
• 🦊 Firefox port (Manifest V3 compatible)
• 🧩 Floating sidebar UI (drag-and-drop panel on page)
• 🧠 Better NLP summarization (extract key goals/constraints automatically)
• 🌐 Translations / i18n
• 🧪 Tests (Jest + Puppeteer for extractor testing)

Quick Dev Setup

git clone https://github.com/contextflow/extension
cd contextflow-extension
# No build step needed — pure vanilla JS
# Load as unpacked extension in chrome://extensions (Developer Mode ON)

---

Permissions Explained

ContextFlow requests only what it needs:

Permission	Why
storage	Store your capsules locally
activeTab	Inject context into the current tab
scripting	Execute injection into AI chat inputs
contextMenus	Right-click → "Save selection to ContextFlow"
clipboardWrite	Copy capsule to clipboard as fallback
Host permissions	Scoped to 20+ specific AI platforms (ChatGPT, Claude, Gemini, Grok, etc.)

We do NOT request: email access, identity, browsing history, cookie access, or any cloud sync.

---

Privacy Policy

• No data collection — all capsules stay in your browser
• No external network calls from the extension itself
• No accounts or login
• No third-party analytics or tracking scripts
• You own your data 100%. Export it anytime. Delete it anytime.

---

License

MIT License — free to use, modify, fork, and distribute.

---

Roadmap

• Firefox / Edge WebExtension port
• Floating in-page sidebar with drag-and-drop
• AI-powered auto-summarization (local, optional)
• Capsule templates library
• Sync between devices via optional self-hosted backend
• Chrome Web Store listing
• Batch capture multiple conversations
• Capsule sharing via encrypted link

---

⭐ If ContextFlow saves you time, consider giving it a star!

Built with ❤️ as an open-source community project. No VC funding. No paywalls. No BS.

Report Bug · Request Feature · Contribute