> ## Documentation Index > Fetch the complete documentation index at: https://docs.skortorent.com/llms.txt > Use this file to discover all available pages before exploring further. # List Undelivered Events > Lists webhook events for this API key that have not been delivered yet, oldest first. A delivery fails when your endpoint does not answer with a 2xx status within 10 seconds. SKOR then retries it 5 minutes and 15 minutes after the previous attempt, with the same body and `svix-id`. After the last retry its status is `failed`. An event leaves this list as soon as a retry or redelivery succeeds. ## OpenAPI ````yaml /api-reference/openapi.yaml get /webhooks/undelivered-events openapi: 3.1.0 info: title: SKOR Modular API version: 1.0.0 description: > ## Overview This is the SKOR Modular API v1. It provides access to tenant workflows, API keys, webhooks, document processing, identity verification, banking connectivity, and forensic analysis. ## Error Statuses The API uses standard HTTP status codes to indicate the success or failure of requests. Each error response provides guidance to help identify the issue and take corrective action. ### Success — `200 OK` The request was processed successfully and the expected response data is returned. ### Validation Error — `400 Bad Request` The request is invalid due to missing, malformed, or incorrect parameters. **Common causes:** - Required fields are missing from the request. - Invalid data formats or unsupported values are provided. - File size or payload limits are exceeded. **How to resolve:** - Verify all required parameters are present. - Ensure the request payload matches the documented schema. - Validate data formats and constraints before retrying. ### Unauthorized — `401 Unauthorized` Authentication failed or the provided token is missing or invalid. **Common causes:** - The `Authorization` header is missing. - An invalid or expired bearer token is provided. **How to resolve:** - Ensure the token is included in the request as an `Authorization: Bearer ` header. - Verify the token is valid and has not expired. - Generate a new token if required. ### Not Found — `404 Not Found` The requested resource does not exist or is not accessible. **Common causes:** - An invalid or non-existent resource identifier. - The resource has not been created or has been deleted. **How to resolve:** - Confirm the resource identifier is correct. - Ensure the resource exists before accessing it. ### Server Error — `500 Internal Server Error` An unexpected error occurred on the server while processing the request. **How to resolve:** - Retry the request after a short delay. - If the issue persists, **[contact us](mailto:info@skortorent.com)** with relevant request details. ### Need Help? If you encounter unexpected behavior, please **[contact us](mailto:info@skortorent.com)** for assistance. servers: - url: https://api.skortorent.com/api/v1 description: Live - url: https://dev-api.skortorent.com/api/v1 description: Sandbox security: - BearerAuth: [] paths: /webhooks/undelivered-events: get: tags: - Webhooks summary: List Undelivered Events description: | Lists webhook events for this API key that have not been delivered yet, oldest first. A delivery fails when your endpoint does not answer with a 2xx status within 10 seconds. SKOR then retries it 5 minutes and 15 minutes after the previous attempt, with the same body and `svix-id`. After the last retry its status is `failed`. An event leaves this list as soon as a retry or redelivery succeeds. parameters: - name: status in: query required: false description: | `pending` (still retrying) or `failed` (retries used up). Default: both. schema: type: string enum: - pending - failed - name: from in: query required: false description: Only deliveries created on or after this date. schema: type: string format: date-time - name: limit in: query required: false description: Maximum number of deliveries to return (1 to 200). schema: type: integer default: 50 minimum: 1 maximum: 200 responses: '200': description: Undelivered events fetched content: application/json: schema: type: object properties: status: type: string enum: - success message: type: string data: type: array items: $ref: '#/components/schemas/WebhookDelivery' '400': $ref: '#/components/responses/ErrorResponse' '401': $ref: '#/components/responses/ErrorResponse' '500': $ref: '#/components/responses/ErrorResponse' components: schemas: WebhookDelivery: type: object properties: id: type: string webhook_id: type: string url: type: string event: type: string example: KYC_VERIFICATION_DATA message_id: type: string description: The `svix-id` sent with every attempt. payload: type: object description: 'The webhook body, `{ "event": ..., "data": ... }`.' status: type: string enum: - pending - failed description: | `pending`: a retry is scheduled at `next_retry_at`. `failed`: all retries failed; use Redeliver Event to send it again. attempt_count: type: integer last_attempt_at: type: string format: date-time nullable: true next_retry_at: type: string format: date-time nullable: true last_response_status: type: integer nullable: true last_error: type: string nullable: true created_at: type: string format: date-time responses: ErrorResponse: description: Error response content: application/json: schema: type: object properties: status: type: string enum: - error message: type: string securitySchemes: BearerAuth: type: http scheme: bearer description: | HTTP Bearer Authentication. Generate a shared token via `/authenticate/token`, then pass it as `Authorization: Bearer `. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.