LockStock Guard

Enterprise secrets daemon for LockStock Protocol - "Secure Enclave in Software"

Overview

LockStock Guard provides enterprise-grade secrets management for AI agent deployments. Unlike personal secrets managers, Guard implements user separation where the daemon holds secrets and agent applications request them via IPC.

                    AGENT SERVER

  +------------------+         +---------------------------+
  |  lockstock-guard |         |    agent application      |
  |  (liberty-user)  |         |    (app-user)             |
  |                  |  Unix   |                           |
  |  - Owns vault    | Socket  |  - Cannot read vault      |
  |  - Decrypts      |<------->|  - Requests via IPC       |
  |  - Serves        |         |  - Gets only what needed  |
  +------------------+         +---------------------------+

  /var/lib/liberty/secrets.enc  (liberty:liberty, mode 600)
  /var/run/liberty/liberty.sock (liberty:agents, mode 660)

Installation

pip install lockstock-guard

Requires: liberty-secrets (installed automatically)

Quick Start

1. Initialize the Enterprise Vault

# Create enterprise vault directory (as root or liberty-user)
sudo mkdir -p /var/lib/liberty /var/run/liberty
sudo chown liberty:liberty /var/lib/liberty
sudo chown liberty:agents /var/run/liberty
sudo chmod 750 /var/lib/liberty /var/run/liberty

# Initialize vault (as liberty-user)
sudo -u liberty liberty --vault /var/lib/liberty init

# Add agent secrets
sudo -u liberty liberty --vault /var/lib/liberty add AGENT_XYZ_SECRET

2. Start the Daemon

# Start daemon (as liberty-user or via systemd)
lockstock-guard start

# Or with custom paths
lockstock-guard start --vault /var/lib/liberty --socket /var/run/liberty/liberty.sock

# Check status
lockstock-guard status

3. Use from Agent Application

from lockstock_guard import client

# Get a secret (connects to daemon via socket)
secret = client.get("AGENT_XYZ_SECRET")

# List available keys
keys = client.list_keys()

# Connection pooling for multiple requests
with client.connect() as conn:
    key1 = conn.get("API_KEY")
    key2 = conn.get("DATABASE_URL")

Systemd Service

Install the systemd service for production:

sudo cp lockstock-guard.service /etc/systemd/system/
sudo systemctl daemon-reload
sudo systemctl enable lockstock-guard
sudo systemctl start lockstock-guard

Security Model

Key security properties:

• Secrets never in environment variables
• Vault file inaccessible to agent processes
• Compromised agent cannot dump vault
• Least privilege - agent gets only requested secrets

Integration with LockStock MCP

The Guard integrates with the LockStock MCP Wallet server:

# MCP server configuration
export LIBERTY_SOCKET=/var/run/liberty/liberty.sock
export LOCKSTOCK_AGENT_ID=agent_xyz

# MCP Wallet retrieves secret from Guard daemon
# Agent never sees the secret directly

CLI Reference

lockstock-guard start [OPTIONS]
    --vault PATH      Vault directory (default: /var/lib/liberty)
    --socket PATH     Socket path (default: /var/run/liberty/liberty.sock)
    --group NAME      Socket group (default: agents)
    --foreground      Run in foreground (don't daemonize)

lockstock-guard stop
    Stop the running daemon

lockstock-guard status
    Check if daemon is running

License

MIT License - See LICENSE file