{
  "name": "sessions_compact",
  "description": "Trigger a session compaction.",
  "input_schema": {
    "type": "object",
    "properties": {
      "sessionId": {
        "type": "string"
      },
      "instructions": {
        "type": "string"
      },
      "compactSize": {
        "type": "integer"
      }
    },
    "required": [
      "sessionId"
    ]
  },
  "timeout": 180
}