# CompactionEvent

**Kind:** Interface

**Source:** [`atloria-monorepo/libs/agent-core/src/context/compaction-types.ts`](https://github.com/sherkety/atloria/blob/main/atloria-monorepo/libs/agent-core/src/context/compaction-types.ts#L139)

## Properties

| Property | Type |
|---|---|
| `version` | `number` |
| `timestamp` | `number` |
| `itemsCompacted` | `number` |
| `tokensBefore` | `number` |
| `tokensAfter` | `number` |
| `method` | `'model' | 'heuristic'` |
| `durationMs` | `number` |