> ## Documentation Index > Fetch the complete documentation index at: https://sendcloud.dev/llms.txt > Use this file to discover all available pages before exploring further. # Broadcast test event > Send a test event to the connection endpoint configured for a specific subscription. Use this to verify that your connection is set up correctly before relying on it for production events. Send a test event to the connection endpoint configured for this subscription. This is useful for verifying that your webhook URL or Klaviyo integration is set up correctly. The test event will contain a sample payload matching the subscription's event type. The test broadcast will use the same authentication and headers configured on the connection. ## OpenAPI ````yaml /.openapi/v3/event-subscriptions/openapi.yaml post /event-subscriptions/broadcast/test/{subscription_id} openapi: 3.1.0 info: title: Event Subscriptions API version: 3.0.0 description: >- **BETA** - The Event Subscriptions API allows you to subscribe to parcel events and have them delivered to external endpoints such as webhooks or Klaviyo. This API uses a two-part model: - **Connections** define _where_ events are delivered (e.g., a webhook URL or a Klaviyo account). - **Subscriptions** define _which_ events are routed to a connection. All resources are scoped to the authenticated user's organization. contact: name: Sendcloud API Support email: contact@sendcloud.com license: name: Apache 2.0 url: https://www.apache.org/licenses/LICENSE-2.0.html servers: - url: https://panel.sendcloud.sc/api/v3 description: Sendcloud Production security: [] tags: - name: Connections - name: Subscriptions - name: OAuth2 - name: Broadcast - name: Events paths: /event-subscriptions/broadcast/test/{subscription_id}: parameters: - schema: type: integer in: path name: subscription_id description: The id of the subscription to send a test event to. required: true post: tags: - Broadcast summary: Broadcast test event description: >- Send a test event to the connection endpoint configured for a specific subscription. Use this to verify that your connection is set up correctly before relying on it for production events. operationId: sc-public-v3-scp-post-test_broadcast responses: '200': description: OK content: application/json: schema: description: Test broadcast result type: object properties: data: $ref: '#/components/schemas/broadcast-result' examples: SuccessfulBroadcast: summary: Successful test broadcast value: data: success: true status_code: 200 response_body: OK FailedBroadcast: summary: Failed test broadcast value: data: success: false status_code: 500 response_body: Internal Server Error '404': description: Not Found content: application/json: schema: $ref: '#/components/schemas/errors' security: - HTTPBasicAuth: [] - OAuth2ClientCreds: [] components: schemas: broadcast-result: title: Broadcast Result description: >- The result of a test event broadcast to a subscription's connection endpoint. type: object properties: success: type: boolean description: Whether the test event was successfully delivered. status_code: type: integer description: The HTTP status code returned by the connection endpoint. response_body: type: string description: The response body returned by the connection endpoint. errors: title: Errors type: object description: A standardized format for errors in JSON:API responses. properties: errors: type: - array - object items: type: object allOf: - $ref: '#/components/schemas/ErrorObject' required: - status - code - detail ErrorObject: title: Error type: object description: Error in a JSON:API error format properties: id: type: string description: A unique identifier for the error. links: type: object description: >- A set of hyperlinks that provide additional information about the error. properties: about: type: string description: A URL that provides additional information about the error. status: type: string format: int32 description: The HTTP status code of the error. minLength: 1 code: type: string description: A unique error code for the error, in snake case format. minLength: 1 enum: - unknown_field - invalid - forbidden - invalid_choice - min_value - 'null' - not_found - required - not_a_list - non_field_errors - authentication_failed - validation_error - parcel_announcement_error title: type: string description: A short, human-readable summary of the error. minLength: 1 detail: type: string description: A human-readable explanation of the error. minLength: 1 source: type: object description: >- An object that identifies the source of the error within the request payload. properties: pointer: type: string description: >- A `JSON` pointer to the location of the error within the request payload. parameter: type: string description: The name of the `query` parameter that caused the error. header: type: string description: The name of the `header` parameter that caused the error. meta: type: object description: Additional metadata about the error. securitySchemes: HTTPBasicAuth: type: http description: >- Basic Authentication using API key and secrets is currently the main authentication mechanism. scheme: basic OAuth2ClientCreds: type: oauth2 description: >- OAuth2 is a standardized protocol for authorization that allows users to share their private resources stored on one site with another site without having to provide their credentials. OAuth2 Client Credentials Grant workflow. This workflow is typically used for server-to-server interactions that require authorization to access specific resources. flows: clientCredentials: tokenUrl: https://account.sendcloud.com/oauth2/token/ scopes: api: Default OAuth scope required to access Sendcloud API. ````