> ## Documentation Index > Fetch the complete documentation index at: https://docs.engine.usesophic.com/llms.txt > Use this file to discover all available pages before exploring further. # Retrieve webhook delivery > Retrieve a webhook delivery by ID. ## OpenAPI ````yaml /openapi.json get /webhook-deliveries/{delivery_id} openapi: 3.1.0 info: title: Sophic Engine API version: 0.1.0 servers: - url: https://api.engine.usesophic.com security: [] tags: - description: Retrieve accounts, statements, and account documents. name: accounts x-group: Accounts - description: Read the audit trail of platform activity. name: activity x-group: Activity - description: Obtain OAuth access tokens for the Engine API. name: auth x-group: Authentication - description: Inspect the authenticated user or service actor. name: identity x-group: Identity - description: Retrieve fee schedules and billing information. name: billing x-group: Billing - description: Browse instruments and tradable products. name: catalog x-group: Catalog - description: Track onboarding applications through completion. name: onboarding x-group: Onboarding - description: Manage customer records and related person data. name: customers x-group: Customers - description: List platform events and inspect individual occurrences. name: events x-group: Events - description: Read positions, transactions, and account holdings. name: holdings x-group: Holdings - description: Retrieve legal agreements and required disclosures. name: legal-documents x-group: Legal Documents - description: Access prices and market data for instruments. name: market-data x-group: Market Data - description: Manage deposits, withdrawals, and funding accounts. name: payments x-group: Payments - description: Retrieve returns, earnings, and performance metrics. name: performance x-group: Performance - description: Place and manage orders, quotes, and trades. name: trading x-group: Trading - description: Read position and account valuations over time. name: valuation x-group: Valuation - description: Configure webhook endpoints and inspect deliveries. name: webhooks x-group: Webhooks - description: Upload files and retrieve stored documents. name: files x-group: Files paths: /webhook-deliveries/{delivery_id}: get: tags: - webhooks summary: Retrieve webhook delivery description: Retrieve a webhook delivery by ID. operationId: get_webhook_delivery_webhook_deliveries__delivery_id__get parameters: - description: The ID of the webhook delivery to retrieve. in: path name: delivery_id required: true schema: description: The ID of the webhook delivery to retrieve. title: Delivery Id type: string responses: '200': content: application/json: schema: $ref: '#/components/schemas/WebhookDelivery' description: OK '400': content: application/json: schema: $ref: '#/components/schemas/Error' description: Bad Request security: - HTTPBearer: [] components: schemas: WebhookDelivery: properties: attempts: description: Delivery attempts. items: $ref: '#/components/schemas/WebhookDeliveryAttempt' title: Attempts type: array created_at: description: >- The timestamp (in [ISO-8601](https://www.iso.org/iso-8601-date-and-time-format.html) format) of when the resource was created. format: date-time title: Created At type: string event: anyOf: - type: string - type: 'null' description: ID of the event being delivered; `null` for test deliveries. title: Event failed_at: anyOf: - format: date-time type: string - type: 'null' description: Time the delivery permanently failed. examples: - '2026-07-14T09:30:00Z' title: Failed At id: description: Unique resource identifier. title: Id type: string modified_at: description: >- The timestamp (in [ISO-8601](https://www.iso.org/iso-8601-date-and-time-format.html) format) of when the resource was last modified. format: date-time title: Modified At type: string next_attempt_at: anyOf: - format: date-time type: string - type: 'null' description: Time the next delivery attempt is scheduled. examples: - '2026-07-14T09:35:00Z' title: Next Attempt At payload: description: Delivery payload. title: Payload type: object status: allOf: - $ref: '#/components/schemas/WebhookDeliveryStatus' description: The delivery lifecycle status. succeeded_at: anyOf: - format: date-time type: string - type: 'null' description: Time the delivery succeeded. examples: - '2026-07-14T09:30:00Z' title: Succeeded At webhook: description: ID of the webhook this delivery targets. title: Webhook type: string required: - created_at - modified_at - id - webhook - event - status - payload - succeeded_at - failed_at - next_attempt_at - attempts title: WebhookDelivery type: object Error: properties: code: description: A machine-readable error code. title: Code type: string context: additionalProperties: anyOf: - type: string - type: integer description: An optional object for adding extra context to the error. title: Context type: object x-remove-null-from-type-union: true detail: description: A human-readable description of the error. title: Detail type: string docs: description: A URL to documentation about this error code. title: Docs type: string x-remove-null-from-type-union: true params: description: An optional list of params that failed validation. items: $ref: '#/components/schemas/InvalidParam' title: Params type: array x-remove-null-from-type-union: true required: - detail - code title: Error type: object WebhookDeliveryAttempt: properties: created_at: description: >- The timestamp (in [ISO-8601](https://www.iso.org/iso-8601-date-and-time-format.html) format) of when the resource was created. format: date-time title: Created At type: string error: anyOf: - $ref: '#/components/schemas/WebhookDeliveryAttemptError' - type: 'null' description: Error details, or `null` if the attempt succeeded. readOnly: true id: description: Unique resource identifier. title: Id type: string modified_at: description: >- The timestamp (in [ISO-8601](https://www.iso.org/iso-8601-date-and-time-format.html) format) of when the resource was last modified. format: date-time title: Modified At type: string outcome: allOf: - $ref: '#/components/schemas/WebhookDeliveryAttemptOutcome' description: Delivery attempt outcome. response: anyOf: - $ref: '#/components/schemas/WebhookDeliveryAttemptResponse' - type: 'null' description: HTTP response details, or `null` if no response was received. readOnly: true required: - created_at - modified_at - id - outcome - response - error title: WebhookDeliveryAttempt type: object WebhookDeliveryStatus: enum: - pending - in_progress - succeeded - failed properties: {} title: WebhookDeliveryStatus type: string InvalidParam: properties: code: description: A machine-readable error code. title: Code type: string detail: description: Human-readable detail for error. title: Detail type: string path: description: Path to the field name (or index if a list) that errored. items: anyOf: - type: integer - type: string title: Path type: array required: - path - detail - code title: InvalidParam type: object WebhookDeliveryAttemptError: properties: error_type: allOf: - $ref: '#/components/schemas/WebhookDeliveryAttemptErrorType' description: Classification of the failure. message: description: Human-readable error detail. title: Message type: string required: - error_type - message title: WebhookDeliveryAttemptError type: object WebhookDeliveryAttemptOutcome: enum: - succeeded - failed properties: {} title: WebhookDeliveryAttemptOutcome type: string WebhookDeliveryAttemptResponse: properties: duration: description: Response duration in milliseconds. examples: - 125 title: Duration type: integer status: description: HTTP response status code. examples: - 200 title: Status type: integer required: - status - duration title: WebhookDeliveryAttemptResponse type: object WebhookDeliveryAttemptErrorType: enum: - http - timeout - dns - tls - connection - validation - unknown properties: {} title: WebhookDeliveryAttemptErrorType type: string securitySchemes: HTTPBearer: scheme: bearer type: http ````