Upload an asset (base64)

POST/v1/assets/upload/base64

Upload a file using a JSON body with base64-encoded content. Returns an uploadID that can be referenced when sending messages with attachments. Alternative to the multipart upload endpoint.

Body ParametersJSONExpand Collapse

content: string

Base64-encoded file content (max ~500MB decoded)

minLength1

maxLength750000000

fileName: optional string

Original filename. Generated if omitted

mimeType: optional string

MIME type. Auto-detected from magic bytes if omitted

ReturnsExpand Collapse

duration: optional number

Duration in seconds (audio/videos)

error: optional string

Error message if upload failed

fileName: optional string

Resolved filename

fileSize: optional number

File size in bytes

height: optional number

Height in pixels (images/videos)

mimeType: optional string

Detected or provided MIME type

srcURL: optional string

Local file URL (file://) for the uploaded asset

uploadID: optional string

Unique upload ID for this asset

width: optional number

Width in pixels (images/videos)

Upload an asset (base64)

curl http://localhost:23373/v1/assets/upload/base64 \
    -H 'Content-Type: application/json' \
    -d '{
          "content": "x"
        }'

{
  "duration": 0,
  "error": "error",
  "fileName": "fileName",
  "fileSize": 0,
  "height": 0,
  "mimeType": "mimeType",
  "srcURL": "srcURL",
  "uploadID": "uploadID",
  "width": 0
}

Returns Examples

{
  "duration": 0,
  "error": "error",
  "fileName": "fileName",
  "fileSize": 0,
  "height": 0,
  "mimeType": "mimeType",
  "srcURL": "srcURL",
  "uploadID": "uploadID",
  "width": 0
}