> ## Documentation Index > Fetch the complete documentation index at: https://docs.aiinsurance.io/llms.txt > Use this file to discover all available pages before exploring further. # List Expected Total Timeline > Returns a chronological timeline of expected total (reserve) changes for specified events. Each entry represents a point in time when reserves were updated, including: - The expected total at that moment - Who made the change - Which transaction category was affected Use this to audit reserve history or build reserve trend visualizations. **All amounts are in cents.** **Required permission:** `company.payment:read` ## OpenAPI ````yaml /openapi/generated-external-api.yaml get /api/external/companies/{companyId}/events/financials/expected-totals/timeline openapi: 3.0.3 info: title: AI Insurance External API description: External API for AI Insurance platform version: 1.0.0 contact: email: support@aiinsurance.io servers: - url: https://app.aiinsurance.io description: Production security: - ApiKeyAuth: [] paths: /api/external/companies/{companyId}/events/financials/expected-totals/timeline: get: tags: - Event Financials summary: List Expected Total Timeline description: > Returns a chronological timeline of expected total (reserve) changes for specified events. Each entry represents a point in time when reserves were updated, including: - The expected total at that moment - Who made the change - Which transaction category was affected Use this to audit reserve history or build reserve trend visualizations. **All amounts are in cents.** **Required permission:** `company.payment:read` operationId: listExpectedTotalTimeline parameters: - $ref: '#/components/parameters/companyId' - name: entityIds in: query required: true schema: type: array items: type: string format: uuid minItems: 1 style: form explode: true description: Event IDs to retrieve timeline for (repeat param for multiple) - name: categoryIds in: query required: false schema: type: array items: type: string style: form explode: true description: Filter to specific transaction category IDs responses: '200': description: Timeline of expected total snapshots (sorted chronologically) content: application/json: schema: type: array items: $ref: '#/components/schemas/ExternalExpectedTotalSnapshot' examples: timelineWithHistory: summary: Reserve update history value: - entityId: 550e8400-e29b-41d4-a716-446655440001 transactionDate: '2025-01-15' activityTimestamp: '' createdByUserId: 772g0622-g41b-63f6-c938-668877662222 createdByUserName: John Doe categoryId: alae_invoice categoryName: ALAE expectedTotalCents: 150000 - entityId: 550e8400-e29b-41d4-a716-446655440001 transactionDate: '2025-01-20' activityTimestamp: '' createdByUserId: 772g0622-g41b-63f6-c938-668877662222 createdByUserName: John Doe categoryId: alae_invoice categoryName: ALAE expectedTotalCents: 250000 emptyTimeline: summary: No reserve updates found value: [] '400': description: Bad Request - Validation error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: missingEntityIds: summary: Missing required entityIds parameter value: error: code: KeyMissing message: 'entityIds: Required keys were missing' invalidUuid: summary: Invalid UUID format value: error: code: VALIDATION_ERROR message: 'entityIds: Invalid UUID format' '401': $ref: '#/components/responses/Unauthorized' '403': $ref: '#/components/responses/Forbidden' '500': $ref: '#/components/responses/InternalServerError' components: parameters: companyId: name: companyId in: path required: true schema: type: string format: uuid description: Company identifier schemas: ExternalExpectedTotalSnapshot: type: object description: Single snapshot in the expected total timeline properties: entityId: type: string format: uuid description: Event ID transactionDate: type: string format: date description: Date of the reserve update (YYYY-MM-DD) activityTimestamp: type: string description: ISO 8601 timestamp of the activity createdByUserId: type: string nullable: true description: User ID who created the update (null if system-generated) createdByUserName: type: string nullable: true description: User name who created the update (null if user not found) categoryId: type: string description: Transaction category ID (e.g., "alae_invoice") categoryName: type: string description: Human-readable category name expectedTotalCents: type: integer description: Expected total amount in cents at this point in time required: - entityId - transactionDate - activityTimestamp - categoryId - categoryName - expectedTotalCents ErrorResponse: type: object description: Standard error response for all external API endpoints required: - error properties: error: type: object required: - code - message properties: code: type: string description: Machine-readable error code example: VALIDATION_ERROR message: type: string description: Human-readable error message example: 'submissionId: Required field is missing' details: type: array description: Additional details for validation errors (field-level errors) items: type: object properties: field: type: string description: The field that caused the error example: submissionId message: type: string description: Description of the field error example: Required field is missing responses: Unauthorized: description: Unauthorized - Invalid or missing API key content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: missingApiKey: summary: Missing API key value: error: code: UNAUTHORIZED message: Authorization header is required bearerTokenNotAllowed: summary: Bearer token used instead of API key value: error: code: UNAUTHORIZED message: External API endpoints require API key authentication Forbidden: description: Forbidden - Insufficient permissions content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: insufficientPermissions: summary: Insufficient permissions value: error: code: FORBIDDEN message: Insufficient permissions to perform this action InternalServerError: description: Internal Server Error - Unexpected error occurred content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: internalError: summary: Unexpected server error value: error: code: INTERNAL_ERROR message: An unexpected error occurred. Please try again later. securitySchemes: ApiKeyAuth: type: apiKey in: header name: Authorization description: >- API key authentication. Include your API key in the Authorization header. ````