# feedback-and-requests

Javier Llorente Mañas

03/25/2022, 11:00 AM
Hello! Is possible in Airbyte to create a custom connection with a custom catalog stream via API? This way, we could easily customize the fields we would like to sync, it is something that is going to be possible to be done with Octavia?
I think this feature will be a game changer compared to Fivetran 😅

Miguel Diaz

03/25/2022, 2:01 PM
there is an api endpoint to create connections and syncCatalog is part of the request

Augustin Lafanechere (Airbyte)

03/25/2022, 3:16 PM
Hi @Javier Llorente Mañas, you can create a connection with the API but you can't change the source's field schema, you can only change the replicated stream. The same as in the UI. In other words: using the API does not allow you to customize the fields you want to sync, the API endpoint expect the same schema as the source outputs your connection will fail on sync if you try this. Sorry, you'll have to wait for Airbyte to support schema evolution, this is planned in the next quarters.

Javier Llorente Mañas

03/28/2022, 8:23 AM