Mode Activation on Start

hookDev tools

Starts your agent's session with preset rules and modes so you don't paste instructions each time.

You want a session to begin in a specific posture (strict review, intensity level, house ruleset) without pasting instructions every time. A SessionStart hook activates the mode and injects its rules.

Delivery for this kind is on the roadmap — not serving yet. You can still add it. It stays paused until ahel can serve it.