{
  "type": "object",
  "properties": {
    "parts": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string",
            "description": "Unique part identifier"
          },
          "title": {
            "type": "string",
            "description": "Human-readable part title"
          },
          "instruction": {
            "type": "string",
            "description": "Instruction for the part agent"
          },
          "timeout_ms": {
            "type": ["integer", "null"],
            "description": "Optional timeout in ms"
          }
        },
        "required": ["id", "title", "instruction", "timeout_ms"],
        "additionalProperties": false
      }
    }
  },
  "required": ["parts"],
  "additionalProperties": false
}