## Create Presigned URLs **post** `/v2/gen-ai/knowledge_bases/data_sources/file_upload_presigned_urls` To create presigned URLs for knowledge base data source file upload, send a POST request to `/v2/gen-ai/knowledge_bases/data_sources/file_upload_presigned_urls`. ### Returns - `request_id: optional string` The ID generated for the request for Presigned URLs. - `uploads: optional array of object { expires_at, object_key, original_file_name, presigned_url }` A list of generated presigned URLs and object keys, one per file. - `expires_at: optional string` The time the url expires at. - `object_key: optional string` The unique object key to store the file as. - `original_file_name: optional string` The original file name. - `presigned_url: optional string` The actual presigned URL the client can use to upload the file directly.