Put static secrets in your HTTP proxy: exe.dev on agent-era key management

davidcrawshaw · x · 2026-11-04

exe.dev's blog argues static secrets like API keys should live in a reverse proxy, not on the app VM — manage third-party integrations via HTTP header injection (they do this for OAuth secrets too). The root problem predates agents: API keys are too powerful, granting holders the ability to re-share access. Agents sharpen it: some models refuse to act once they "see" a key, others write it into cross-session memory and burn context on revoked keys. Moving secret handling to the proxy layer keeps keys away from models and app code.

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