Agent Stealth: Preventing API Key & Secret Leakage

Security · updated Mon Feb 23

Five guardrails to prevent agents from leaking API keys and other secrets.

Steps

  1. Scan agent outputs for secret-like patterns before display.
  2. Scope secret access to only the keys required for the active tool.
  3. Exclude secrets from logs and telemetry.
  4. Use a proxy or vault so agents see alias tokens, not raw secrets.
  5. Add a system-prompt rule forbidding disclosure of credentials.

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