Context Vault MCP Server

Give Claude, Cursor, Windsurf, and other AI tools native access to your personal context — without prompt injection or copy-pasting.

Context Vault stores your preferences, communication style, active projects, corrections, and personal background. This MCP server lets any MCP-compatible AI tool retrieve that context automatically.

Quick Start

1. Get your API key

Sign up at aiglue.ai, go to Settings → API Key, and generate a cv_ key.

2. Add to Claude Desktop

Edit ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):

{
  "mcpServers": {
    "context-vault": {
      "command": "npx",
      "args": ["-y", "context-vault-mcp"],
      "env": {
        "CONTEXT_VAULT_API_KEY": "cv_your_api_key_here"
      }
    }
  }
}

3. Add to Cursor

Edit ~/.cursor/mcp.json:

{
  "mcpServers": {
    "context-vault": {
      "command": "npx",
      "args": ["-y", "context-vault-mcp"],
      "env": {
        "CONTEXT_VAULT_API_KEY": "cv_your_api_key_here"
      }
    }
  }
}

4. Add to Windsurf

Edit ~/.codeium/windsurf/mcp_config.json:

{
  "mcpServers": {
    "context-vault": {
      "command": "npx",
      "args": ["-y", "context-vault-mcp"],
      "env": {
        "CONTEXT_VAULT_API_KEY": "cv_your_api_key_here"
      }
    }
  }
}

How It Works

┌──────────────────┐     MCP Protocol     ┌──────────────────┐     HTTPS     ┌──────────────────┐
│  Claude Desktop  │ ◄──────────────────► │  MCP Server      │ ◄───────────► │  Context Vault   │
│  Cursor / etc.   │                      │  (this package)  │               │  API             │
│                  │                      │                  │               │  api.aiglue.ai   │
└──────────────────┘                      └──────────────────┘               └──────────────────┘

1. You store your context entries in Context Vault (via the web app or Chrome extension)
2. This MCP server authenticates with your cv_ API key
3. When an AI tool needs your context, it calls the MCP tools
4. The server fetches your entries from the Context Vault API
5. PHI-flagged entries are excluded by default (HIPAA compliance)

Tools

get_context

Retrieve your full personal context, formatted for AI consumption. Use this at the start of a conversation so the AI understands who you are.

| Parameter | Type | Required | Description | |-----------|--------|----------|-------------| | platform | string | No | Target platform: claude, chatgpt, manus, grok, perplexity, gemini | | format | string | No | Response format: text, json, markdown | | category | string | No | Filter: style, personal, work, projects, tools, corrections |

get_summary

Quick vault overview — entry counts by category, platforms configured, last update. No parameters.

search_context

Keyword search across your context entries.

| Parameter | Type | Required | Description | |----------|--------|----------|-------------| | query | string | Yes | Search query (1-200 chars) | | platform | string | No | Filter by platform |

Environment Variables

| Variable | Required | Default | Description | |----------|----------|---------|-------------| | CONTEXT_VAULT_API_KEY | Yes | — | Your cv_ API key from aiglue.ai | | CONTEXT_VAULT_API_URL | No | https://api.aiglue.ai | API base URL (for self-hosted or staging) |

PHI Safety

Entries flagged as containing Protected Health Information (PHI) are never returned by any MCP tool. The API filters them server-side. The include_phi parameter is not exposed through the MCP server.

Security

• Your API key is stored locally in your MCP config file
• The key is never sent to Anthropic — it only goes to the Context Vault API
• All API communication uses HTTPS
• The MCP server runs locally on your machine
• No data is cached or persisted by the MCP server

Development

git clone https://github.com/Ad-Vital/context-vault-mcp.git
cd context-vault-mcp
pnpm install
CONTEXT_VAULT_API_KEY=cv_test pnpm dev

Troubleshooting

"CONTEXT_VAULT_API_KEY is not set"

Make sure the env block in your MCP config includes the key. Get one at aiglue.ai → Settings → API Key.

Claude does not show the hammer icon

• Restart Claude Desktop after editing the config
• Check Claude Desktop logs: Help → Show Logs
• Ensure Node.js 18+ is installed

"Context Vault API error: Authentication required"

• Verify your API key starts with cv_
• Regenerate the key in the web app if needed
• Make sure there are no extra spaces in the key

License

MIT — Ad Vital, Inc.