litellm-proxy-security

To secure upstream API keys in a LiteLLM proxy configuration, you need to isolate secrets using proper secrets management and enforce strict access controls. This prevents plaintext key leakage from config files and blocks unauthorized access to routed LLM provider requests.

Virtual key scoping in LiteLLM proxy deployments is the practice of generating restricted proxy keys that map to upstream providers. It enforces per-key restrictions, ensuring clients only access authorized models and preventing budget abuse across the aggregated providers.

You can prevent budget abuse on a LiteLLM proxy by applying per-key budget controls and virtual key scoping. This enforces strict spending limits and access restrictions for all routed requests, preventing unauthorized users from exhausting your upstream provider quotas.

Yes, LiteLLM proxy stores plaintext keys in config files to aggregate multiple LLM providers. This creates a significant risk surface for key leakage, requiring config hardening and secrets management patterns to isolate credentials and prevent data leakage.

Best practices for LiteLLM proxy config hardening include validating key management, isolating secrets from plaintext config files, and applying virtual key scoping. These deployment review steps ensure proper access controls and prevent unauthorized access to upstream LLM providers.