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Custom Instructions are always-on guidance that you or your team write once for a Workspace. Replit uses them across that Workspace’s Projects and sessions, so you do not need to repeat conventions in every Conversation. Use Custom Instructions for a small set of guidelines that are always true, such as approved libraries, security requirements, or data-handling policies. Keep them short and specific so they leave room for the work at hand.

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Choose the right kind of guidance

  • Use Custom Instructions for workspace-wide guidance that should always apply.
  • Use Skills for reusable approaches and supporting material that are relevant only to particular tasks.
  • Use Memories for useful context Replit retains from past work.

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Set up Custom Instructions

Manage Custom Instructions in Workspace Settings → Customization. The detailed feature guide covers setup, availability, permissions, and how to keep instructions effective.
Custom Instructions reference

Set up workspace-wide guidance and learn when it applies.

Open the feature guide →