Context Chest

Your second brain for every AI tool you use.

You use Claude Code, Cursor, and Windsurf across multiple projects. Each one forgets everything between sessions. Context Chest gives them all a shared, encrypted memory that auto-organizes by topic.

Store in Claude. Recall in Cursor. Browse from Windsurf. One vault, every tool.

contextchest.com · Pricing

Why Context Chest?

Every AI memory tool out there solves "Claude forgets" — for Claude only. If you use multiple tools, you're out of luck.

Quick Start (30 seconds)

1. Sign up + generate API key

Go to contextchest.com, create an account, then go to Settings → Generate API Key.

2. Add config to your project

Create .mcp.json in your project root:

{
  "mcpServers": {
    "context-chest": {
      "command": "npx",
      "args": ["-y", "context-chest-mcp@latest"],
      "env": {
        "CONTEXT_CHEST_API_KEY": "cc_your_key_here",
        "CONTEXT_CHEST_EXPORT_KEY": "your_export_key_here"
      }
    }
  }
}

3. Restart Claude Code / Cursor

Type /exit and relaunch. Done. No terminal login, no password prompts.

4. (Optional) Add agent instructions

Paste Context Chest instructions into your CLAUDE.md to enable passive context extraction — your AI will automatically extract and remember context from conversations without you saying "remember this."

Copy the instructions from contextchest.com/settings.

How It Works

Auto-Sort Into Chests

Talk to your AI naturally. Context Chest extracts what matters and sorts it automatically:

• Talk about your tech stack → Work chest (blue)
• Mention a dentist appointment → Health chest (green)
• Discuss pricing strategy → Finance chest (yellow)
• Personal notes → Personal chest (purple)
• Tool configs → Tools chest (orange)
• Learning goals → Learning chest (cyan)

No manual organizing. No "remember this" commands. Just work.

Cross-Agent Memory

Claude Code ──▶ Context Chest ◀── Windsurf
      │              │              │
      │    ┌─────────┴─────────┐   │
      │    │ Encrypted Vault   │   │
      │    │ ████████████████  │   │
      │    └─────────┬─────────┘   │
      │              │              │
Cursor ──────▶ Same keys ◀─── Any MCP

Store a decision in Claude Code. Recall it from Cursor. Browse it from Windsurf. One vault, every tool, every project.

End-to-End Encryption

Master Key (256-bit random)
  │
  ├─ HKDF(exportKey, userId) → wrapping key
  │
  └─ HKDF(masterKey, chestName/URI) → per-item AES-256-GCM key

Everything is encrypted on your device before it leaves your machine. The server stores ciphertext only. Even we can't read your memories.

Tools

Features

• Cross-agent — One memory across Claude Code, Cursor, Windsurf, any MCP client
• Auto-sorted — Memories route to chests by topic (work, health, finance, personal, tools, learning)
• E2E encrypted — AES-256-GCM with per-chest HKDF key derivation. Server sees only ciphertext.
• Multi-project — Different project? Different chest. One API key works everywhere.
• Web dashboard — Browse, edit (Tiptap WYSIWYG), search, and manage from contextchest.com
• Export / Import — Download memories as .md files or full chest as .zip. Import from .md or .zip.
• Self-hostable — Run on your own infrastructure. Docker Compose included. MIT licensed.

Who It's For

The Multi-Tool Developer — You bounce between Claude Code, Cursor, and Windsurf. Explain your stack once. Every tool knows it.

The Freelancer — 5 clients, 5 projects. Auto-separated into chests. Client A's secrets never leak into Client B's session.

The Technical Founder — Revenue numbers, hiring plans, investor notes. Encrypted so a server breach reveals nothing.

The Privacy-Conscious Engineer — Regulated industry? Self-host it. Your infra, your keys, your data.

Pricing

Self-Hosting

git clone https://github.com/fuckupic/context-chest.git
cd context-chest
docker-compose up -d
npm install
cp .env.example .env
npx prisma migrate dev
npm run dev

API server: http://localhost:3002 PWA dashboard: http://localhost:5173

Project Structure

context-chest/
  packages/
    mcp-server/     # MCP server (npm: context-chest-mcp)
    pwa/            # React PWA dashboard
  src/              # API server (Fastify + Prisma)
  prisma/           # Database schema + migrations
  docker-compose.yml

Running Tests

npm test                    # API server tests
cd packages/mcp-server && npm test  # MCP server tests

License

MIT

Built by Tady & Luky