MCP Tool Examples

From QPR ProcessAnalyzer Wiki
Jump to navigation Jump to search

This page contains example scripts intended for use as MCP tools. When developing MCP tool scripts, make sure they return a string value, as this is required for the MCP client's LLM to interpret the output correctly.

List of Models

Returns all models accessible for the user (in a CSV data) with following fields: Model name, Containing project name, Model ID, Case attributes, Event attributes, Case count, and Event count.

let result = Query(#{
	"Values": [
		#{
			"Name": "Model name",
			"Expression": "Name"
		},
		#{
			"Name": "Containing project name",
			"Expression": "Project.Name"
		},
		#{
			"Name": "Model ID",
			"Expression": "Id"
		},
		#{
			"Name": "Case attributes",
			"Expression": "ToJson(If(Status==\"Online\",OrderByValue(Flatten(EventLog.CaseAttributes.Name)), CasesDatatable?.ColumnNames ?? []))"
		},
		#{
			"Name": "Event attributes",
			"Expression": "ToJson(If(Status==\"Online\",OrderByValue(Flatten(EventLog.EventAttributes.Name)), EventsDatatable?.ColumnNames ?? []))"
		},
		#{
			"Name": "Case count",
			"Expression": "CasesDatatable?.NRows"
		},
		#{
			"Name": "Event count",
			"Expression": "EventsDatatable?.NRows"
		}
	],
	"Ordering": [
		#{
			"Name": "Containing project name",
			"Direction": "Ascending"
		},
		#{
			"Name": "Model name",
			"Direction": "Ascending"
		}
	],
	"Dimensions": null,
	"Root": "Models",
	"ContextType": "generic"
}).Collect();
return result.ToCsv();

Average case cost in specific model

Returns the average of the case Cost attribute value of all cases in the model with ID 1.

let result = Query(#{
	"Values": [
		#{
			"Name": "Average Cost",
			"Expression": "Column(\"Cost\")",
			"AggregationFunction": "average"
		}
	],
	"Dimensions": [],
	"Root": "Cases",
	"ModelId": 1,
	"ContextType": "model",
	"ProcessingMethod": "dataframe"
}).Collect();
return result.ToCsv();

Case details

Returns details of a specific case. The case ID is provided as an MCP parameter, so the following Input configuration is needed:

{
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "CaseId": {
      "type": "string",
      "minLength": 1,
      "description": "Unique identifier of the case (i.e, Case ID). Cases may be orders, deliveries, invoices depending on the model name."
    }
  }
}

The tool script that returns details of a case ID including all case attribute values:

let modelId = 1;
let dataQuery = [
		#{
			"Name": "Start time",
			"Expression": "AggregateFrom(Events, \"Min\", TimeStamp, null)"
		},
		#{
			"Name": "End time",
			"Expression": "AggregateFrom(Events, \"Max\", TimeStamp, null)"
		},
		#{
			"Name": "Duration in hours",
			"Expression": "DurationBetweenDates(\"hour\", AggregateFrom(Events, \"Min\", TimeStamp, null), AggregateFrom(Events, \"Max\", TimeStamp, null), null)"
		},
		#{
			"Name": "Latest event",
			"Expression": "AggregateFrom(Events.WithRowNumberColumn(\"RowNumber\", [TimeStamp, EventType], [CaseId], [false, false]).Where(Column(\"RowNumber\") == 1), \"Any\", EventType, null)"
		},
		#{
			"Name": "Event count",
			"Expression": "Coalesce(AggregateFrom(Events, \"Count\", null, null), 0)"
		},
		#{
			"Name": "Event types count",
			"Expression": "Coalesce(AggregateFrom(Events, \"CountDistinct\", EventType, null), 0)"
		},
		#{
			"Name": "Repeating event types",
			"Expression": "Coalesce(AggregateFrom(Events, \"Count\", null, null), 0) - Coalesce(AggregateFrom(Events, \"CountDistinct\", EventType, null), 0)"
		},
		#{
			"Name": "Variation path",
			"Expression": "AggregateFrom(Events, #{\"Function\":\"Array\",\"Ordering\":[TimeStamp, EventType]}, EventType, null)"
		}
	];

let caseAttributes = ModelById(modelId).CasesDatatable.Columns.Name.{
	let caseAttributeName = _;
	dataQuery = Concat(dataQuery, #{
		"Name": caseAttributeName,
		"Expression": `Column(${ToJson(caseAttributeName)})`
	});
};

let result = Query(#{
	"Dimensions": null,
	"Values": dataQuery,
	"MaximumRowCount": 1,
	"Root": "Cases",
	"Filter": #{
		"Items": [
			#{
				"Type": "IncludeCases",
				"Items": [
					#{
						"Type": "CaseAttributeValue",
						"Attribute": "Case Name",
						"StringifiedValues": [
							"0" + orderID
						]
					}
				]
			}
		]
	},
	"ModelId": modelId,
	"ContextType": "model",
	"ProcessingMethod": "dataframe"
}).Collect();
return result.ToCsv();

Notes: - Note that the script has the CaseId variable containing the provided CaseId parameter. - The model ID is hardcoded in this example, but the model ID can also be provided as an MCP parameter.