Data Ingestion API: Upload Large Batches as JSON Files via the payload_file Field
JSON file upload for the Data Ingestion API. Instead of embedding your documents in the request body, save your full payload as a .json file and upload it via the payload_file field. The file can contain everything — email, api_key, core_name, and documents — or just the documents array with auth as separate form fields. Ideal for large batches generated by CMS exports or data pipelines.