# PoolStatusChanged

**Purpose**: Emitted when a pool’s active status toggles (e.g., from active to inactive or vice versa).

**Key Inclusions**:

* `pool_id`: The pool affected.
* `old_status`: The status before the change (true/false).
* `new_status`: The updated status.
* `changed_by`: The address initiating the status change.
* `timestamp`: When the status change occurred.

**Use Cases**:

* Warn traders and liquidity providers if the pool is temporarily paused or permanently closed.
* Enable UIs to update the availability of trading or liquidity actions.
* Provide a historical record of availability and maintenance periods.