# Custom Event Tracking ## Latest Data Preview - [POST /v3/customEventTracking/getLastLines/{product_id}](https://rui-api.redocly.app/v3_api_redocly/custom-event-tracking/paths/~1v3~1customeventtracking~1getlastlines~1%7Bproduct_id%7D/post.md): This request returns the last few custom events that have been collected including the product and system metadata of the client on which each event was collected in JSON format. ## Downloadable File Listing - [GET /v3/customEventTracking/listFiles/{product_id}](https://rui-api.redocly.app/v3_api_redocly/custom-event-tracking/paths/~1v3~1customeventtracking~1listfiles~1%7Bproduct_id%7D/get.md): This request returns the list of zipped CSV files containing custom event tracking data that are on the server. This list is to be used to see what files are available for download and then be able to request files for downloading. ## Download Zipped CSV - [POST /v3/customEventTracking/getDownloadUrl/{product_id}](https://rui-api.redocly.app/v3_api_redocly/custom-event-tracking/paths/~1v3~1customeventtracking~1getdownloadurl~1%7Bproduct_id%7D/post.md): In order to download the data files containing custom event tracking data, the file needs to be requested to the API which returns a secure URL from which the file can be downloaded. The request and response are both JSON objects.