If you wish to download Transcriptions via API, please note that this feature is accessible with the Aircall AI add-on. The Aircall AI API is specifically designed for customers who have purchased this add-on. Enabling this functionality grants you access to event endpoints such as Call Transcript, Call Summary, Key Topics, and Sentiment Analysis through Webhook or REST API.
You can find more information here:
https://developer.aircall.io/api-references/#retrieve-a-transcription
If you are interesting in acquiring the Aircall AI add-on, you can purchase it or request a quote in the your Aircall dashboard.