> ## Documentation Index > Fetch the complete documentation index at: https://dub.co/llms.txt > Use this file to discover all available pages before exploring further. # Track a deep link open event > This endpoint is used to track when a user opens your app via a Dub-powered deep link (for both iOS and Android). Deferred deep linking requires a [Pro plan](https://dub.co/pricing/links) subscription or higher. ## OpenAPI ````yaml post /track/open openapi: 3.0.3 info: title: Dub API description: >- Dub is the modern link attribution platform for short links, conversion tracking, and affiliate programs. version: 0.0.1 contact: name: Dub Support email: support@dub.co url: https://dub.co/support license: name: AGPL-3.0 license url: https://github.com/dubinc/dub/blob/main/LICENSE.md servers: - url: https://api.dub.co description: Production API security: [] paths: /track/open: post: tags: - Track summary: Track a deep link open event description: >- This endpoint is used to track when a user opens your app via a Dub-powered deep link (for both iOS and Android). operationId: trackOpen requestBody: content: application/json: schema: type: object properties: deepLink: description: >- The deep link that brought the user to the app. If left blank, Dub will fallback to probabilistic tracking by using the `dubDomain` parameter to check if there is an associated click event for the user's IP address. Learn more: https://d.to/ddl type: string maxLength: 32000 dubDomain: description: >- Your deep link custom domain on Dub (e.g. `acme.link`). This is used in probabilistic tracking to check if there is an associated click event for the user's IP address. Learn more: https://d.to/ddl type: string responses: '200': description: The response from the tracked open event. content: application/json: schema: type: object properties: clickId: nullable: true description: >- The click ID of the associated open event (or the prior click that led the user to the app store for probabilistic tracking). Learn more: https://d.to/ddl type: string link: nullable: true description: >- The deep link that brought the user to the app. This will be `null` if the open event was not associated with a link (e.g. a direct download from the app store). Learn more: https://d.to/ddl type: object properties: id: type: string description: The ID of the deep link. example: link_xxx domain: type: string description: The domain of the deep link. example: acme.link key: type: string description: The key of the deep link. example: fb-promo url: type: string description: The URL of the deep link. example: https://acme.com/product/123 required: - id - domain - key - url additionalProperties: false required: - clickId - link additionalProperties: false '400': $ref: '#/components/responses/400' '401': $ref: '#/components/responses/401' '403': $ref: '#/components/responses/403' '404': $ref: '#/components/responses/404' '409': $ref: '#/components/responses/409' '410': $ref: '#/components/responses/410' '422': $ref: '#/components/responses/422' '429': $ref: '#/components/responses/429' '500': $ref: '#/components/responses/500' components: responses: '400': description: >- The server cannot or will not process the request due to something that is perceived to be a client error (e.g., malformed request syntax, invalid request message framing, or deceptive request routing). content: application/json: schema: x-speakeasy-name-override: BadRequest type: object properties: error: type: object properties: code: type: string enum: - bad_request description: A short code indicating the error code returned. example: bad_request message: x-speakeasy-error-message: true type: string description: A human readable explanation of what went wrong. example: The requested resource was not found. doc_url: type: string description: >- A link to our documentation with more details about this error code example: https://dub.co/docs/api-reference/errors#bad-request required: - code - message required: - error '401': description: >- Although the HTTP standard specifies "unauthorized", semantically this response means "unauthenticated". That is, the client must authenticate itself to get the requested response. content: application/json: schema: x-speakeasy-name-override: Unauthorized type: object properties: error: type: object properties: code: type: string enum: - unauthorized description: A short code indicating the error code returned. example: unauthorized message: x-speakeasy-error-message: true type: string description: A human readable explanation of what went wrong. example: The requested resource was not found. doc_url: type: string description: >- A link to our documentation with more details about this error code example: https://dub.co/docs/api-reference/errors#unauthorized required: - code - message required: - error '403': description: >- The client does not have access rights to the content; that is, it is unauthorized, so the server is refusing to give the requested resource. Unlike 401 Unauthorized, the client's identity is known to the server. content: application/json: schema: x-speakeasy-name-override: Forbidden type: object properties: error: type: object properties: code: type: string enum: - forbidden description: A short code indicating the error code returned. example: forbidden message: x-speakeasy-error-message: true type: string description: A human readable explanation of what went wrong. example: The requested resource was not found. doc_url: type: string description: >- A link to our documentation with more details about this error code example: https://dub.co/docs/api-reference/errors#forbidden required: - code - message required: - error '404': description: The server cannot find the requested resource. content: application/json: schema: x-speakeasy-name-override: NotFound type: object properties: error: type: object properties: code: type: string enum: - not_found description: A short code indicating the error code returned. example: not_found message: x-speakeasy-error-message: true type: string description: A human readable explanation of what went wrong. example: The requested resource was not found. doc_url: type: string description: >- A link to our documentation with more details about this error code example: https://dub.co/docs/api-reference/errors#not-found required: - code - message required: - error '409': description: >- This response is sent when a request conflicts with the current state of the server. content: application/json: schema: x-speakeasy-name-override: Conflict type: object properties: error: type: object properties: code: type: string enum: - conflict description: A short code indicating the error code returned. example: conflict message: x-speakeasy-error-message: true type: string description: A human readable explanation of what went wrong. example: The requested resource was not found. doc_url: type: string description: >- A link to our documentation with more details about this error code example: https://dub.co/docs/api-reference/errors#conflict required: - code - message required: - error '410': description: >- This response is sent when the requested content has been permanently deleted from server, with no forwarding address. content: application/json: schema: x-speakeasy-name-override: InviteExpired type: object properties: error: type: object properties: code: type: string enum: - invite_expired description: A short code indicating the error code returned. example: invite_expired message: x-speakeasy-error-message: true type: string description: A human readable explanation of what went wrong. example: The requested resource was not found. doc_url: type: string description: >- A link to our documentation with more details about this error code example: https://dub.co/docs/api-reference/errors#invite-expired required: - code - message required: - error '422': description: >- The request was well-formed but was unable to be followed due to semantic errors. content: application/json: schema: x-speakeasy-name-override: UnprocessableEntity type: object properties: error: type: object properties: code: type: string enum: - unprocessable_entity description: A short code indicating the error code returned. example: unprocessable_entity message: x-speakeasy-error-message: true type: string description: A human readable explanation of what went wrong. example: The requested resource was not found. doc_url: type: string description: >- A link to our documentation with more details about this error code example: >- https://dub.co/docs/api-reference/errors#unprocessable-entity required: - code - message required: - error '429': description: >- The user has sent too many requests in a given amount of time ("rate limiting") content: application/json: schema: x-speakeasy-name-override: RateLimitExceeded type: object properties: error: type: object properties: code: type: string enum: - rate_limit_exceeded description: A short code indicating the error code returned. example: rate_limit_exceeded message: x-speakeasy-error-message: true type: string description: A human readable explanation of what went wrong. example: The requested resource was not found. doc_url: type: string description: >- A link to our documentation with more details about this error code example: >- https://dub.co/docs/api-reference/errors#rate-limit_exceeded required: - code - message required: - error '500': description: The server has encountered a situation it does not know how to handle. content: application/json: schema: x-speakeasy-name-override: InternalServerError type: object properties: error: type: object properties: code: type: string enum: - internal_server_error description: A short code indicating the error code returned. example: internal_server_error message: x-speakeasy-error-message: true type: string description: A human readable explanation of what went wrong. example: The requested resource was not found. doc_url: type: string description: >- A link to our documentation with more details about this error code example: >- https://dub.co/docs/api-reference/errors#internal-server_error required: - code - message required: - error ````