> ## 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. # Create Lawsuit > Creates a lawsuit for an event. Each event can have at most one lawsuit. Returns 409 Conflict if a lawsuit already exists for the event. **Required permission:** `company.event:export` ## OpenAPI ````yaml /openapi/generated-external-api.yaml post /api/external/companies/{companyId}/events/{eventId}/lawsuit 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/{eventId}/lawsuit: post: tags: - Lawsuits summary: Create Lawsuit description: | Creates a lawsuit for an event. Each event can have at most one lawsuit. Returns 409 Conflict if a lawsuit already exists for the event. **Required permission:** `company.event:export` operationId: createLawsuit parameters: - $ref: '#/components/parameters/companyId' - $ref: '#/components/parameters/eventId' requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/CreateLawsuitRequest' examples: minimal: summary: Create with no fields value: {} withFields: summary: Create with case details value: caseNumber: CASE-2026-001 caseName: Smith v. Jones Insurance Co. lawsuitFiledDate: '2026-01-10T00:00:00.000Z' venueName: District Court of Springfield judgeName: Hon. Sarah Williams responses: '201': description: Lawsuit created content: application/json: schema: type: object properties: id: type: string format: uuid description: The created lawsuit identifier examples: success: summary: Lawsuit created value: id: 550e8400-e29b-41d4-a716-446655440001 '401': $ref: '#/components/responses/Unauthorized' '403': $ref: '#/components/responses/Forbidden' '409': description: Conflict - A lawsuit already exists for this event content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: conflict: summary: Lawsuit already exists value: error: code: Conflict message: A lawsuit already exists for this event '500': $ref: '#/components/responses/InternalServerError' components: parameters: companyId: name: companyId in: path required: true schema: type: string format: uuid description: Company identifier eventId: name: eventId in: path required: true schema: type: string format: uuid description: Event identifier schemas: CreateLawsuitRequest: type: object properties: caseNumber: type: string description: Court case number caseName: type: string description: Name of the case lawsuitFiledDate: type: string format: date-time description: Date lawsuit was filed (ISO 8601) suitServedDate: type: string format: date-time description: Date suit was served (ISO 8601) trialDate: type: string format: date-time description: Scheduled trial date (ISO 8601) venueName: type: string description: Name of the court venue venueAddress: $ref: '#/components/schemas/LawsuitAddress' description: Address of the court venue judgeName: type: string description: Name of the presiding judge plaintiffs: type: array items: type: string description: List of plaintiff names plaintiffAttorneyId: type: string format: uuid description: >- Attorney representing the plaintiff (must reference an existing attorney) plaintiffLawFirmId: type: string format: uuid description: >- Law firm representing the plaintiff (must reference an existing payee) plaintiffAddress: $ref: '#/components/schemas/LawsuitAddress' description: Address of the plaintiff settlementDemand: type: string description: Settlement demand amount settlementType: type: string description: >- Settlement type code (S=Settlement, N=No Settlement, L=Litigated, C=Closed) arbitrationInvolved: type: string description: Whether arbitration is involved (Yes/No) dateDefenseCounselAdded: type: string format: date-time description: Date defense counsel was added (ISO 8601) expertDefense: type: string description: Defense expert information expertPlaintiff: type: string description: Plaintiff expert information declaratoryJudgementFiledDate: type: string format: date-time description: Date declaratory judgement was filed (ISO 8601) 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 LawsuitAddress: type: object description: Address with display value and optional structured components properties: value: type: string description: Display string for the address structuredValue: type: object description: Parsed address components properties: streetNumber: type: string streetName: type: string city: type: string county: type: string state: type: object properties: short: type: string long: type: string country: type: string postalCode: type: string name: type: string neighborhood: type: string sublocality: type: string location: type: object properties: lat: type: number lng: type: number timezone: type: string required: - value 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. ````