## Upload Base64

`client.Assets.UploadBase64(ctx, body) (*AssetUploadBase64Response, error)`

**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.

### Parameters

- `body AssetUploadBase64Params`

  - `Content param.Field[string]`

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

  - `FileName param.Field[string]`

    Original filename. Generated if omitted

  - `MimeType param.Field[string]`

    MIME type. Auto-detected from magic bytes if omitted

### Returns

- `type AssetUploadBase64Response struct{…}`

  - `Duration float64`

    Duration in seconds (audio/videos)

  - `Error string`

    Error message if upload failed

  - `FileName string`

    Resolved filename

  - `FileSize float64`

    File size in bytes

  - `Height float64`

    Height in pixels (images/videos)

  - `MimeType string`

    Detected or provided MIME type

  - `SrcURL string`

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

  - `UploadID string`

    Unique upload ID for this asset

  - `Width float64`

    Width in pixels (images/videos)

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/beeper/desktop-api-go"
)

func main() {
  client := beeperdesktopapi.NewClient(

  )
  response, err := client.Assets.UploadBase64(context.TODO(), beeperdesktopapi.AssetUploadBase64Params{
    Content: "x",
  })
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", response.Width)
}
```