Developer Quickstart & Policy Integration

# Option A: Run via Docker
docker run -d -p 4000:4000 --name mastyf ghcr.io/mastyf-ai/gateway:latest

# Option B: Run via npm
npm install -g @mastyf/gateway
mastyf start --mode audit

// claude_desktop_config.json or cursor.json
{
  "mcpServers": {
    "github": {
      "command": "mastyf-proxy",
      "args": ["--upstream", "npx -y @modelcontextprotocol/server-github"]
    }
  }
}

# mastyf-policy.yaml
version: "1.0"
mode: "warn" # audit -> warn -> block
rules:
  - tool: "filesystem.read_file"
    invariants:
      path_containment:
        allowed_prefixes: ["./src", "./docs"]
        denied_patterns: ["/etc/*", ".env", "*.pem"]
  - tool: "payment_payout"
    invariants:
      monetary_clamping:
        max_single_transaction_usd: 50.00

# Probe your policies against multi-turn injections
mastyf-swarm test --policy ./mastyf-policy.yaml --fixtures ./corpus
# Output: 228/228 PASS (0 regressions)