# Generate a presigned URL for uploading a file

**POST** `/v1/files/upload/presigned-url`

**Operation ID**: `generatePresignedUrl`
**Summary**: Generate a presigned URL for uploading a file
Generates a presigned URL that allows the client to upload a file directly. The file will be automatically deleted after 24 hours.

## Tags
- Files
## Parameters

- **fileSizeBytes** (required) - query
  - Type: integer
- **format** (required) - query
  - File format. Valid values: json, plaintext
  - Type: enum: `json`, `plaintext`

## Responses

### 200

Presigned URL generated successfully

- **Content-Type**: `application/json` / `PresignedUploadUrlResponse`
### 400

Invalid parameters (file too large, unsupported format, etc.)

### 401

Unauthorized