Hey @kgoulding
A PR has been merged into speckle-sharp/core to add blob support. But that functionality has not been exposed to connectors or received the documentation love it deserves.
As an option B, you can use the server’s blob api to store blobs attached to the stream:
the ${serverUrl}/api/stream/{streamId}/blob endpoint support multipart/form-data with file uploads.
The response contains a blobId, which can be used to retreive the blob content via:
${serverUrl}/api/stream/{streamId}/blob/{blobId} in your custom web viewer.
Let me know if you have more questions,
Gergő