# Generate a presigned URL for direct CSV upload

> POST /api/v1/s3/presigned-upload-url — request parameters and responses from the Menace Voice API schema.

`POST /api/v1/s3/presigned-upload-url`

{/* Generated by scripts/sync_docs_api.mjs. Edit the API schema source to change the contract. */}

See [authentication](/api-reference/authentication) for workspace API access. Public embed and artifact endpoints use their documented session or access tokens.

## API contract for documentation tools

Generated from the OpenAPI schema. Do not infer a different parameter type from an example. Authentication headers are alternatives as explained in the authentication guide.

### Parameters

| Name | Location | Type | Required | Description and constraints |
| --- | --- | --- | --- | --- |
| authorization | header | string or null | no |  |
| X-API-Key | header | string or null | no |  |

### Request body: application/json

Required body. Schema: PresignedUploadUrlRequest (object).

| Field | Type | Required | Description and constraints |
| --- | --- | --- | --- |
| file_name | string | yes | CSV filename pattern: ".*\\.csv$" |
| file_size | integer | yes | File size in bytes (max 10MB) maximum: 10485760 |
| content_type | string | no | File content type default: "text/csv" |

### Response 200

Successful Response

application/json: PresignedUploadUrlResponse (object).

| Field | Type | Required | Description and constraints |
| --- | --- | --- | --- |
| upload_url | string | yes |  |
| file_key | string | yes |  |
| expires_in | integer | yes |  |

### Response 404

Not found

### Response 422

Validation Error

application/json: HTTPValidationError (object).

| Field | Type | Required | Description and constraints |
| --- | --- | --- | --- |
| detail | array of ValidationError (object) | no |  |

## OpenAPI

````yaml api-reference/openapi.json post /api/v1/s3/presigned-upload-url
openapi: 3.1.0
info:
  title: Menace Voice API
  description: API for Menace Voice agents
  version: 1.0.0
servers:
  - url: https://voice.menaceui.com
    description: Production
  - url: http://localhost:8000
    description: Local development
paths:
  /api/v1/s3/presigned-upload-url:
    post:
      tags:
        - main
        - s3
      summary: Generate a presigned URL for direct CSV upload
      description: >-
        Generate a presigned PUT URL for direct CSV file upload to S3/MinIO.


        This endpoint enables browser-to-storage uploads without passing through
        the backend


        Access Control:

        * All authenticated users can upload CSV files scoped to their
        organization.

        * Files are stored with organization-scoped keys for multi-tenancy.


        Returns:

        * upload_url: Presigned URL (valid for 15 minutes) for PUT request

        * file_key: Unique storage key to use as source_id in campaign creation

        * expires_in: URL expiration time in seconds
      operationId: get_presigned_upload_url_api_v1_s3_presigned_upload_url_post
      parameters:
        - name: authorization
          in: header
          required: false
          schema:
            anyOf:
              - type: string
              - type: "null"
            title: Authorization
        - name: X-API-Key
          in: header
          required: false
          schema:
            anyOf:
              - type: string
              - type: "null"
            title: X-Api-Key
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: "#/components/schemas/PresignedUploadUrlRequest"
      responses:
        "200":
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/PresignedUploadUrlResponse"
        "404":
          description: Not found
        "422":
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/HTTPValidationError"
components:
  schemas:
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: "#/components/schemas/ValidationError"
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    PresignedUploadUrlRequest:
      properties:
        file_name:
          type: string
          pattern: .*\.csv$
          title: File Name
          description: CSV filename
        file_size:
          type: integer
          maximum: 10485760
          exclusiveMinimum: 0
          title: File Size
          description: File size in bytes (max 10MB)
        content_type:
          type: string
          title: Content Type
          description: File content type
          default: text/csv
      type: object
      required:
        - file_name
        - file_size
      title: PresignedUploadUrlRequest
    PresignedUploadUrlResponse:
      properties:
        upload_url:
          type: string
          title: Upload Url
        file_key:
          type: string
          title: File Key
        expires_in:
          type: integer
          title: Expires In
      type: object
      required:
        - upload_url
        - file_key
        - expires_in
      title: PresignedUploadUrlResponse
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
              - type: string
              - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
        input:
          title: Input
        ctx:
          type: object
          title: Context
      type: object
      required:
        - loc
        - msg
        - type
      title: ValidationError
````