i have data create in backoffice using block list editor and i watch to fetch this data to the frontend using javascript.

If you want some data - and create a custom model you could use the https://docs.umbraco.com/umbraco-cms/reference/routing/umbraco-api-controllers/ If you want html markup back then you could still use this but have an intermediate step where your blocks are rendered, html returned in an api call.

Thanks I used content delivery api for the implementation

Do you mean make the delivery api return a custom model?

@Sven Geusens was trying understand how to go about using API controllers

Did you figure it out?

Not yet

Does this help? ContentStructure as shown in the picture https://cdn.discordapp.com/attachments/1183885991367426098/1184847753281552444/image.png?ex=658d7675&is=657b0175&hm=e46319539655d1e87c498637be9d408a93ee680e1d7b69d18d7e18d22630a42b&

Thanks 💯💯

No problem, enjoy your weekend!

And you too