Development
Hook
Hooks
What modelharness runs automatically, and when. A hook is a command Claude Code fires at a fixed moment, without you asking for it.
Install
$ npx -y skills add vitaliikapliuk/modelharness --agent claude-codeShips with modelharness. Installing the plugin gets these hooks.
What fires, and when
SessionStart
Fires once when a session begins, and again after a context compaction. It is where a plugin sets up its environment, or restores state the compaction dropped.
- Runs session-start.sh".
Where it lives
- hooks/session-start.shGitHub
Read the script before you install anything that runs on your machine. This is the one part of a plugin that acts without being asked.
Ships withmodelharness
Make every model cheaper or better. Measured on four Claude models — none got worse. What it actually is: a zero-config Claude Code plugin.
Get the whole plugin, auto-invoked
Skills in this plugin
See everything inside