# Generate a signed S3 URL

> GET /api/v1/s3/signed-url — request parameters and responses from the Menace Voice API schema.

`GET /api/v1/s3/signed-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 |
| --- | --- | --- | --- | --- |
| key | query | string | yes | S3 object key |
| expires_in | query | integer | no | default: 3600 |
| inline | query | boolean | no | default: false |
| storage_backend | query | string or null | no | Storage backend to use (e.g. 'minio', 's3'). When omitted the backend is inferred from the resource. |
| authorization | header | string or null | no |  |
| X-API-Key | header | string or null | no |  |

### Response 200

Successful Response

application/json: S3SignedUrlResponse (object).

| Field | Type | Required | Description and constraints |
| --- | --- | --- | --- |
| url | 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 get /api/v1/s3/signed-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/signed-url:
    get:
      tags:
        - main
        - s3
      summary: Generate a signed S3 URL
      description: >-
        Return a short-lived signed URL for a file stored on S3 / MinIO.


        Access Control:

        * Known org-scoped keys (for example ``campaigns/{org_id}/...`` and
          ``recordings/{org_id}/{recording_id}/...``) are authorized by matching the
          org_id against the requesting user's organization.
        * Legacy keys (``recordings/{run_id}.wav``,
        ``transcripts/{run_id}.txt``)
          are authorized via the workflow run they belong to.
        * Superusers can request supported org-scoped and legacy keys.
      operationId: get_signed_url_api_v1_s3_signed_url_get
      parameters:
        - name: key
          in: query
          required: true
          schema:
            type: string
            description: S3 object key
            title: Key
          description: S3 object key
        - name: expires_in
          in: query
          required: false
          schema:
            type: integer
            default: 3600
            title: Expires In
        - name: inline
          in: query
          required: false
          schema:
            type: boolean
            default: false
            title: Inline
        - name: storage_backend
          in: query
          required: false
          schema:
            anyOf:
              - type: string
              - type: "null"
            description: Storage backend to use (e.g. 'minio', 's3'). When omitted the
              backend is inferred from the resource.
            title: Storage Backend
          description: Storage backend to use (e.g. 'minio', 's3'). When omitted the
            backend is inferred from the resource.
        - 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
      responses:
        "200":
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/S3SignedUrlResponse"
        "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
    S3SignedUrlResponse:
      properties:
        url:
          type: string
          title: Url
        expires_in:
          type: integer
          title: Expires In
      type: object
      required:
        - url
        - expires_in
      title: S3SignedUrlResponse
    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
````