There's a solution for this in Infisical! It's called secrets brokering and is built into the Infisical CLI: The Infisical agent proxy. Using this, your agent can use secrets without ever being able to fetch them back since they are injected into upstream requests. You can use this for local coding agents like Claude Code or Codex, and also have a standalone proxy with a separate machine identity for longer running agents (slack agents, hermes, openclaw etc.) Check it out here:
https://infisical.com/docs/documentation/platform/agent-prox...