Remember Sonnet 3.5? companies guarded their system prompts like trade secrets and half of reddit was jailbreaking models just to leak them lol. that hidden text was basically the magic sauce. but now? idk with all the agentic coding stuff, the behavior feels like it comes from files you actually control like CLAUDE.md, AGENTS.md, cursor rules, whatever. submitted by /u/Permit-Historical
Originally posted by u/Permit-Historical on r/ClaudeCode
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