Christian Wehrli, Notes and Attachment API Endpoints #100718
https://thebrain.zendesk.com/agent/tickets/100718
Hello Christian,
Thank you for your patience.
For creating or modifying notes, the supported endpoints are:

POST /notes/{brainId}/{thoughtId}/update
This is used to create or update/replace the note content for a thought.
POST /notes/{brainId}/{thoughtId}/append
This is used to append content to an existing note.
For attachments, the supported endpoints are:

POST /attachments/{brainId}/{thoughtId}/file
This is used to upload a file attachment to a thought.
POST /attachments/{brainId}/{thoughtId}/url
This is used to add a URL attachment to a thought.
You can also view the full API specification, including available endpoints and example requests, here:
https://api.bra.in/index.html
Best regards,
John