Scenario 15: Apply a plugin to a subset of target platforms

Use this when a repo opts into some harnesses but not others. For example, a backend repo that supports Claude Code and Codex but never used Cursor.

Frequency: Common · Status: Shipped

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Use this when a repo opts into some harnesses but not others. For example, a backend repo that supports Claude Code and Codex but never used Cursor.

Typical commands:

harnesstap apply my-setup --project . --harness claude-code,codex --dry-run
harnesstap apply my-setup --project . --harness claude-code,codex

The --harness flag also lets you migrate one harness at a time: apply only the new target first, verify the result, then add the remaining harnesses on a follow-up run.