MCP Tools Reference: chronicle.googleapis.com

Tool: get_case

Retrieves a single case by its resource name.

Fetches all details for a specific case, including its properties (such as priority, stage, and assignee), as well as any associated tasks, tags, and products. This tool is fundamental for drilling down into a specific incident after identifying it through a list view or search.

CRITICAL INSTRUCTION: When using this tool, you MUST ALWAYS also call the list_case_alerts tool for the same case ID to fetch the associated alerts. You must then synthesize the information from both tools to provide a comprehensive response. The response should include case details, associated alerts, and a summary of comments if available.

Here are the details for Case ID [Case ID]:

Case Details:

Name: [Name] Display Name: [Display Name] Status: [Status] Stage: [Stage] Priority: [Priority] Assignee: [Assignee] Last Modifying User ID: [Last Modifying User ID] Created Time: [Create Time] Updated Time: [Update Time] Alert Count: [Alert Count (calculate from list_case_alerts)] Important: [Important] Incident: [Incident] Type: [Type] Overflow Case: [Overflow Case] Environment: [Environment] Workflow Status: [Workflow Status] Source: [Source] Involved Suspicious Entity: [Involved Suspicious Entity] Move Environment: [Move Environment]

Associated Alerts:

Alert ID: [Alert ID] Display Name: [Alert Display Name] Rule Generator: [Rule Generator] Product: [Product] Vendor: [Vendor] Source System: [Source System (if available)] Priority: [Priority] Status: [Status] Start Time: [Start Time (if available)] End Time: [End Time (if available)] Source URL: [Source URL (if available)]

Comments: There are [Number of comments] comments associated with this case, including notes about [Topic 1], [Topic 2], and entries like "[Comment Snippet]" by [Author].

Example: There are 23 comments associated with this case, including notes about Meta-Analysis Reports, Triage Reports, and entries like "OneMCP works!" by Soary Siem.

Workflow Integration: - Used when an analyst clicks on a case in a queue or dashboard to view its full details in an investigation UI. - Essential for automated playbooks that need to retrieve the current state of a case before taking action, such as enrichment or remediation. - Provides the necessary data to populate a case investigation screen, showing all relevant information in one place. - Can be used to verify the result of an update operation by fetching the case after the update has been applied.

Use Cases: - An analyst retrieves a case to begin an investigation and understand its context. - An automated system fetches a case to extract entities for further enrichment from other threat intelligence sources. - A manager views a case to review its progress, check the SLA status, and see the latest comments. - A reporting script fetches case details to generate a detailed incident report.

Args: project_id (str): Google Cloud project ID (required). customer_id (str): Chronicle customer ID (required). region (str): Chronicle region (e.g., "us", "europe") (required). case_id (str): The numeric ID of the Case to retrieve (e.g., '12345'). This is a required field. expand (str, optional): A comma-separated list of related resources to include in the response. This allows you to get a more complete picture of the case in a single call. Supported values: 'tasks', 'tags', 'products'.

Returns: Case: The full Case object with all its details. If the 'expand' parameter is used, the corresponding related resources will be included. The Case object contains the following key fields: - Name (str): The full resource name of the case. - Id (int): The unique identifier for the case. - DisplayName (str): The title or display name of the case. - Stage (str): The current stage of the case (e.g., "Triage", "Investigation"). - Priority (str): The priority of the case (e.g., "PRIORITY_HIGH"). - Assignee (str): The user or group assigned to the case. - Description (str): A detailed description of the case. - Status (str): The current status of the case (e.g., "OPENED", "CLOSED"). - CreateTime (int): The creation timestamp of the case in milliseconds. - UpdateTime (int): The last update timestamp of the case in milliseconds. - Tags (list of str): A list of tags associated with the case. - Products (list of str): A list of products associated with the case. Returns an error message if the case is not found or the user does not have permission to view it.

Example Usage: # Get basic details for a specific case (and automatically fetch alerts as per instruction) get_case(project_id='123', region='us', customer_id='abc', case_id='456')

# Get a case and include its associated tasks and tags
        get_case(project_id='123', region='us', customer_id='abc', case_id='456', expand='tasks,tags')

Next Steps (using MCP-enabled tools): - Use 'list_case_alerts' to fetch the details of all alerts associated with this case. - Use 'list_case_comments' to see the full history of comments and actions taken on the case.

The following sample demonstrate how to use curl to invoke the get_case MCP tool.

Curl Request 
                  
curl --location 'https://chronicle.googleapis.com/mcp' \
--header 'content-type: application/json' \
--header 'accept: application/json, text/event-stream' \
--data '{
  "method": "tools/call",
  "params": {
    "name": "get_case",
    "arguments": {
      // provide these details according to the tool's MCP specification
    }
  },
  "jsonrpc": "2.0",
  "id": 1
}'

Input Schema

Request message for GetCase. Next ID: 6

GetCaseRequest

JSON representation 
{
  "projectId": string,
  "customerId": string,
  "region": string,
  "caseId": string,
  "expand": string
}
Fields
projectId

string

Project ID of the customer.
customerId

string

Customer ID of the customer.
region

string

Region of the customer.
caseId

string

Case ID of the case to get.
expand

string

Expand the case to include all the related cases.

Output Schema

A Case represents a security investigation in SecOps. Cases group related alerts and provide a central location for analysts to document their findings, track progress, and collaborate on resolving security incidents.

Case

JSON representation 
{
  "name": string,
  "creatorUserId": string,
  "creatorUser": string,
  "lastModifyingUserId": string,
  "lastModifyingUser": string,
  "createTime": string,
  "updateTime": string,
  "displayName": string,
  "alertCount": integer,
  "stage": string,
  "priority": enum (Priority),
  "assignee": string,
  "assignedUser": string,
  "description": string,
  "type": enum (CaseType),
  "environment": string,
  "status": enum (CaseStatus),
  "score": number,
  "workflowStatus": enum (WorkflowStatus),
  "sla": {
    object (Sla)
  },
  "alertsSla": {
    object (Sla)
  },
  "source": string,
  "tags": [
    {
      object (CaseTag)
    }
  ],
  "products": [
    {
      object (CaseProduct)
    }
  ],
  "closureDetails": {
    object (CaseClosureDetails)
  },
  "tasks": [
    {
      object (Task)
    }
  ],
  "moveEnvironment": {
    object (MoveEnvironment)
  },
  "dataAccessScopes": [
    string
  ],

  // Union field _important can be only one of the following:
  "important": boolean
  // End of list of possible types for union field _important.

  // Union field _incident can be only one of the following:
  "incident": boolean
  // End of list of possible types for union field _incident.

  // Union field _overflow_case can be only one of the following:
  "overflowCase": boolean
  // End of list of possible types for union field _overflow_case.

  // Union field _involved_suspicious_entity can be only one of the following:
  "involvedSuspiciousEntity": boolean
  // End of list of possible types for union field _involved_suspicious_entity.
}
Fields
name

string

Identifier. The unique name(ID) of the Case. Format: projects/{project}/locations/{location}/instances/{instance}/cases/{case}
creatorUserId

string

Output only. Case creator id. Used for homepage/requests feature.
creatorUser

string

Output only. Resource association for the creator.
lastModifyingUserId

string

Output only. Last user who modified the case. replaced old property name: LastModifyingUser.
lastModifyingUser

string

Output only. Resource association for the modifying user.
createTime

string (int64 format)

Output only. The creation time of the record in milliseconds.
updateTime

string (int64 format)

Output only. The modification time of the record in milliseconds.
displayName

string

Required. Case title, limited to 200 characters. Replaces old property: Title.
alertCount

integer

Output only. Alerts in case.
stage

string

Required. The stage of the Case. For example, "Triage", "Incident", "Investigation". Stages are defined in "chronicle.googleapis.com/CaseStageDefinition". The default stage option is "Triage".
priority

enum (Priority)

Required. Default value is HIGH. Case priority. For example, "Informative", "Low", "Medium", "High", "Critical".
assignee

string

Optional. This can be a user or a @SocRole, default value is the default soc-role defined in Settings.
assignedUser

string

Output only. Resource association for the assignee.
description

string

Optional. Case description. Limit chars to 1000.
type

enum (CaseType)

Required. Case type.
environment

string

Required. Case logical environments.
status

enum (CaseStatus)

Output only. Case data status.
score

number

Optional. Attack exposure score, how risky the case.
workflowStatus

enum (WorkflowStatus)

Output only. Case playbook status.
sla

object (Sla)

Optional. SLA for the case.
alertsSla

object (Sla)

Optional. Aggregated alerts SLA. (alert has SLA as well).
source

string

Output only. The source that created the case. Possible values: "Server", "User", "Simulated", "Merge", "AlertMove"
tags[]

object (CaseTag)

Optional. CaseTags associated with the case.
products[]

object (CaseProduct)

Optional. Products associated with the case. Contains Name of product (e.g. WinEventLog:Security/DLP_Product). Replaces old property: "Product".
closureDetails

object (CaseClosureDetails)

Optional. Case closure details.
tasks[]

object (Task)

Output only. Tasks associated with the case.
moveEnvironment

object (MoveEnvironment)

Optional. Case environment move details.
dataAccessScopes[]

string

Output only. Data Access Scopes.

Union field _important.

_important can be only one of the following:
important

boolean

Optional. Additional way to specify case importance. The default is false.

Union field _incident.

_incident can be only one of the following:
incident

boolean

Optional. Additional way to specify if the case marked as incident. The default is false.

Union field _overflow_case.

_overflow_case can be only one of the following:
overflowCase

boolean

Output only. Case without events, was reduced by the connector service due to a large amount of data. During ingestion if the "alert package" crosses a specific threshold, the alert will be trimmed due to security reasons (DDOS attacks, etc..)

Union field _involved_suspicious_entity.

_involved_suspicious_entity can be only one of the following:
involvedSuspiciousEntity

boolean

Optional. If has involved suspicious entity in the case.

Sla

JSON representation 
{
  "expirationTime": string,
  "criticalExpirationTime": string,
  "expirationStatus": enum (SlaExpirationStatus),
  "remainingTimeSinceLastPause": integer
}
Fields
expirationTime

string (int64 format)

Required. SLA expiration time in unix format as milliseconds. Old prop: SlaExpiration.
criticalExpirationTime

string (int64 format)

Required. SLA critical expiration time in unix format as milliseconds, old prop: SlaCriticalExpiration.
expirationStatus

enum (SlaExpirationStatus)

Output only. SLA expiration status.
remainingTimeSinceLastPause

integer

Output only. Remaining time since last pause.

CaseTag

JSON representation 
{
  "displayName": string,
  "alert": string,

  // Union field _priority can be only one of the following:
  "priority": integer
  // End of list of possible types for union field _priority.
}
Fields
displayName

string

Output only. The name of the tag
alert

string

Output only. For tags set by playbook action, this is relevant during MoveAlert. Replaces old property: "Indicator".

Union field _priority.

_priority can be only one of the following:
priority

integer

Output only. During ingestion if more than one tag matches the criteria, the one with the priority will be chosen. Available options: 1-5.

CaseProduct

JSON representation 
{
  "displayName": string,
  "alert": string
}
Fields
displayName

string

Output only. Display name of the product.
alert

string

Output only. Replaces old property: "AlertIdentifier".

CaseClosureDetails

JSON representation 
{
  "reason": enum (CloseReason),
  "rootCause": string,
  "caseClosedAction": enum (CaseClosedAction),
  "comment": string
}
Fields
reason

enum (CloseReason)

Output only. Case closure reason.
rootCause

string

Output only. Case closure root cause.
caseClosedAction

enum (CaseClosedAction)

Output only. Case closed action.
comment

string

Output only. Case closure comment.

Task

JSON representation 
{
  "name": string,
  "id": string,
  "createTime": string,
  "updateTime": string,
  "content": string,
  "dueTime": string,
  "title": string,
  "author": string,
  "lastAuthor": string,
  "assignee": string,
  "status": enum (Status),
  "resolver": string,
  "comment": string,
  "resolutionTime": string,
  "caseId": integer,

  // Union field _favorite can be only one of the following:
  "favorite": boolean
  // End of list of possible types for union field _favorite.
}
Fields
name

string

Identifier. The unique name(ID) of the task. Format: projects/{project}/locations/{location}/instances/{instance}/tasks/{task}
id

string (int64 format)

Output only. The unique ID of the task.
createTime

string (int64 format)

Output only. The creation time of the task.
updateTime

string (int64 format)

Output only. The last update time of the task.
content

string

Required. The task content, limited to 4096 characters.
dueTime

string (int64 format)

Optional. The due time for the task in ms. When specified during task creation, must be in the future. Is optional as deadlines can exist without a specific scheduled time.
title

string

Required. The task title, minimum length of 3 characters and maximum of 50 characters.
author

string

Output only. The user who created the task.
lastAuthor

string

Output only. The last editor of the task.
assignee

string

Required. The assignee of the task.
status

enum (Status)

Required. The status of the task. todo change to task startus enum
resolver

string

Output only. The user who resolved the task.
comment

string

Required. Comment added during task resolution, limited to 4096 characters.
resolutionTime

string (int64 format)

Output only. The resolution time of the task in ms.
caseId

integer (uint32 format)

Optional. Associated case id (if task is related to a specific case) Can be optional as tasks may exist independently or be associated with a specific case.

Union field _favorite.

_favorite can be only one of the following:
favorite

boolean

Optional. Determines whether the task is marked as favorite.

MoveEnvironment

JSON representation 
{
  "shouldDeleteOldCase": boolean
}
Fields
shouldDeleteOldCase

boolean

Optional. If the case should be deleted on move to the new environment.

Tool Annotations

Destructive Hint: ❌ | Idempotent Hint: ✅ | Read Only Hint: ✅ | Open World Hint: ❌