openapi: 3.1.0
info:
  title: Google Cloud Chronicle API
  description: >-
    The Chronicle API provides programmatic access to Google Cloud's security
    analytics platform. It supports ingesting security telemetry, searching
    security data using UDM, managing detection rules, investigating alerts,
    and accessing threat intelligence.
  version: v1alpha
  contact:
    name: Google Cloud Support
    url: https://cloud.google.com/chronicle/docs/support
  termsOfService: https://cloud.google.com/terms
externalDocs:
  description: Chronicle API Documentation
  url: https://cloud.google.com/chronicle/docs/reference/rest
servers:
  - url: https://chronicle.googleapis.com/v1alpha
    description: Production Server
tags:
  - name: Alerts
    description: Operations for managing security alerts
  - name: Feeds
    description: Operations for managing data ingestion feeds
  - name: ReferenceLists
    description: Operations for managing reference lists
  - name: Rules
    description: Operations for managing detection rules
security:
  - oauth2: []
paths:
  /projects/{projectId}/locations/{location}/instances/{instanceId}/rules:
    get:
      operationId: listRules
      summary: Google Cloud Chronicle List detection rules
      description: Lists detection rules in a Chronicle instance.
      tags:
        - Rules
      parameters:
        - $ref: '#/components/parameters/projectId'
        - $ref: '#/components/parameters/location'
        - $ref: '#/components/parameters/instanceId'
        - $ref: '#/components/parameters/pageSize'
        - $ref: '#/components/parameters/pageToken'
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListRulesResponse'
    post:
      operationId: createRule
      summary: Google Cloud Chronicle Create a detection rule
      description: Creates a new detection rule in a Chronicle instance.
      tags:
        - Rules
      parameters:
        - $ref: '#/components/parameters/projectId'
        - $ref: '#/components/parameters/location'
        - $ref: '#/components/parameters/instanceId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Rule'
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Rule'
  /projects/{projectId}/locations/{location}/instances/{instanceId}/rules/{ruleId}:
    get:
      operationId: getRule
      summary: Google Cloud Chronicle Get a detection rule
      description: Gets a detection rule by resource name.
      tags:
        - Rules
      parameters:
        - $ref: '#/components/parameters/projectId'
        - $ref: '#/components/parameters/location'
        - $ref: '#/components/parameters/instanceId'
        - $ref: '#/components/parameters/ruleId'
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Rule'
    patch:
      operationId: updateRule
      summary: Google Cloud Chronicle Update a detection rule
      description: Updates an existing detection rule.
      tags:
        - Rules
      parameters:
        - $ref: '#/components/parameters/projectId'
        - $ref: '#/components/parameters/location'
        - $ref: '#/components/parameters/instanceId'
        - $ref: '#/components/parameters/ruleId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Rule'
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Rule'
    delete:
      operationId: deleteRule
      summary: Google Cloud Chronicle Delete a detection rule
      description: Deletes a detection rule.
      tags:
        - Rules
      parameters:
        - $ref: '#/components/parameters/projectId'
        - $ref: '#/components/parameters/location'
        - $ref: '#/components/parameters/instanceId'
        - $ref: '#/components/parameters/ruleId'
      responses:
        '200':
          description: Successful response
  /projects/{projectId}/locations/{location}/instances/{instanceId}/alerts:
    get:
      operationId: listAlerts
      summary: Google Cloud Chronicle List alerts
      description: Lists alerts in a Chronicle instance.
      tags:
        - Alerts
      parameters:
        - $ref: '#/components/parameters/projectId'
        - $ref: '#/components/parameters/location'
        - $ref: '#/components/parameters/instanceId'
        - $ref: '#/components/parameters/pageSize'
        - $ref: '#/components/parameters/pageToken'
        - name: filter
          in: query
          description: Filter expression for alerts
          schema:
            type: string
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListAlertsResponse'
  /projects/{projectId}/locations/{location}/instances/{instanceId}/feeds:
    get:
      operationId: listFeeds
      summary: Google Cloud Chronicle List feeds
      description: Lists data ingestion feeds in a Chronicle instance.
      tags:
        - Feeds
      parameters:
        - $ref: '#/components/parameters/projectId'
        - $ref: '#/components/parameters/location'
        - $ref: '#/components/parameters/instanceId'
        - $ref: '#/components/parameters/pageSize'
        - $ref: '#/components/parameters/pageToken'
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListFeedsResponse'
    post:
      operationId: createFeed
      summary: Google Cloud Chronicle Create a feed
      description: Creates a new data ingestion feed.
      tags:
        - Feeds
      parameters:
        - $ref: '#/components/parameters/projectId'
        - $ref: '#/components/parameters/location'
        - $ref: '#/components/parameters/instanceId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Feed'
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Feed'
  /projects/{projectId}/locations/{location}/instances/{instanceId}/referenceLists:
    get:
      operationId: listReferenceLists
      summary: Google Cloud Chronicle List reference lists
      description: Lists reference lists in a Chronicle instance.
      tags:
        - ReferenceLists
      parameters:
        - $ref: '#/components/parameters/projectId'
        - $ref: '#/components/parameters/location'
        - $ref: '#/components/parameters/instanceId'
        - $ref: '#/components/parameters/pageSize'
        - $ref: '#/components/parameters/pageToken'
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListReferenceListsResponse'
components:
  parameters:
    projectId:
      name: projectId
      in: path
      required: true
      schema:
        type: string
    location:
      name: location
      in: path
      required: true
      schema:
        type: string
    instanceId:
      name: instanceId
      in: path
      required: true
      schema:
        type: string
    ruleId:
      name: ruleId
      in: path
      required: true
      schema:
        type: string
    pageSize:
      name: pageSize
      in: query
      schema:
        type: integer
    pageToken:
      name: pageToken
      in: query
      schema:
        type: string
  schemas:
    Rule:
      type: object
      properties:
        name:
          type: string
          description: The resource name of the rule
        text:
          type: string
          description: The YARA-L 2.0 rule text
        displayName:
          type: string
          description: Display name for the rule
        severity:
          type: string
          enum: [INFORMATIONAL, LOW, MEDIUM, HIGH, CRITICAL]
        enabled:
          type: boolean
          description: Whether the rule is enabled
        createTime:
          type: string
          format: date-time
        updateTime:
          type: string
          format: date-time
    Alert:
      type: object
      properties:
        name:
          type: string
        ruleName:
          type: string
        severity:
          type: string
          enum: [INFORMATIONAL, LOW, MEDIUM, HIGH, CRITICAL]
        state:
          type: string
          enum: [NEW, IN_PROGRESS, CLOSED]
        createTime:
          type: string
          format: date-time
        feedback:
          type: string
          enum: [TRUE_POSITIVE, FALSE_POSITIVE]
    Feed:
      type: object
      properties:
        name:
          type: string
          description: The resource name of the feed
        displayName:
          type: string
        sourceType:
          type: string
          description: The type of data source
        logType:
          type: string
          description: The log type for the feed
        state:
          type: string
          enum: [ACTIVE, INACTIVE]
        feedSourceDetails:
          type: object
          description: Source-specific configuration
    ReferenceList:
      type: object
      properties:
        name:
          type: string
        displayName:
          type: string
        description:
          type: string
        lines:
          type: array
          items:
            type: string
        createTime:
          type: string
          format: date-time
        updateTime:
          type: string
          format: date-time
    ListRulesResponse:
      type: object
      properties:
        rules:
          type: array
          items:
            $ref: '#/components/schemas/Rule'
        nextPageToken:
          type: string
    ListAlertsResponse:
      type: object
      properties:
        alerts:
          type: array
          items:
            $ref: '#/components/schemas/Alert'
        nextPageToken:
          type: string
    ListFeedsResponse:
      type: object
      properties:
        feeds:
          type: array
          items:
            $ref: '#/components/schemas/Feed'
        nextPageToken:
          type: string
    ListReferenceListsResponse:
      type: object
      properties:
        referenceLists:
          type: array
          items:
            $ref: '#/components/schemas/ReferenceList'
        nextPageToken:
          type: string
  securitySchemes:
    oauth2:
      type: oauth2
      flows:
        authorizationCode:
          authorizationUrl: https://accounts.google.com/o/oauth2/auth
          tokenUrl: https://oauth2.googleapis.com/token
          scopes:
            https://www.googleapis.com/auth/cloud-platform: Full access to Google Cloud