# Practical ways to use the Claude Agent SDK 🛡 Build defense in depth with prompt injection countermeasures, credential proxies, and least privilege. Secure Deployment provides isolation techniques, credential proxy patterns, and network/filesystem controls for safe production agent operation. 📌 Title: Deploying AI Agents Securely 🔗 URL: 🧩 Overview Combines sandbox-runtime / Docker / gVisor / Firecracker isolation, credential proxy patterns, and network/filesystem controls for multi-layered defense. 🛠 How to use it Choose isolation by threat level: sandbox-runtime for single developer/CI, gVisor/Firecracker for multi-tenant or untrusted content. Inject credentials via Envoy / mitmproxy / LiteLLM proxies outside the agent boundary. 🏗 Practical usage - Credential proxy pattern: inject API keys at a proxy outside the agent boundary. The agent calls APIs without ever seeing credentials. Route via `ANTHROPIC_BASE_URL`. - Least privilege: mount only required directories as read-only, exclude `.env` / `~/.aws/credentials` / `*.pem`, use `--network none` + Unix socket proxy. - In cloud environments, use private subnets + cloud firewalls to block all outbound except through the proxy, which enforces allow-lists, injects credentials, and logs all traffic. 💡 Use cases 🔐 Credential management outside agent boundaries 🌐 Network restrictions preventing unauthorized data exfiltration 🏢 Strong isolation for multi-tenant environments ⚠️ Watch out Untrusted content (READMEs, web pages, user input) may contain prompt injection attempts. Network controls are your last line of defense — always configure them. #ClaudeAgentSDK# #AI#