# Pi Lattices Extension

`@arach/pi-lattices` is a Pi package that turns the Lattices daemon into
first-class Pi tools. It is implemented in `packages/pi-lattices/` and registers
strictly-prefixed `lattices_*` tools on Pi session start.

The extension preserves the Lattices runtime model:

- It calls the existing macOS-native daemon. Lattices 0.15.1 uses
  private IPC by default. Install the compatible extension from this checkout.
- It does not bundle or route through `cua-driver`.
- Run-backed computer-use tools keep Lattices `treatment` semantics.
- Mutation wrappers prefer `treatment: "stage"` unless the caller explicitly
  asks for `present` or `execute`.
- Daemon-down failures are tool results with guidance, not registration-time
  crashes.

Continue with free email access at /lattices/docs/pi-lattices.