What
A new CLI flag that lets users customize the plan-mode workflow instructions.
Usage
claude --print --plan-mode-instructions "Custom workflow instructions here"Details
- Replaces the default code-implementation phases in the plan-mode system reminder
- The read-only enforcement preamble and ExitPlanMode protocol footer are always kept
- Can only be used with
--printmode; using it otherwise produces:"Error: --plan-mode-instructions can only be used with --print mode." - Also exposed as an agent frontmatter field
planModeInstructionsfor programmatic configuration
Evidence
CLI option definition (search for "--plan-mode-instructions") and enforcement (search for "can only be used with --print mode").
Strings lifted out of the shipped bundle, so the claim above can be checked against them.