> ## Documentation Index
> Fetch the complete documentation index at: https://docs.kukkingu.software/llms.txt
> Use this file to discover all available pages before exploring further.

# Create asset upload intent

> Creates a tenant-scoped public media asset upload intent.



## OpenAPI

````yaml https://api.contracting.kukkingu.software/api/v1/docs.json post /api/v1/assets
openapi: 3.1.0
info:
  title: Contracting Backend API
  version: 0.1.0
  description: API documentation for the Contracting backend service.
servers:
  - url: https://api.contracting.kukkingu.software
    description: API server
security:
  - bearerAuth: []
paths:
  /api/v1/assets:
    post:
      tags:
        - Assets
      summary: Create asset upload intent
      description: Creates a tenant-scoped public media asset upload intent.
      parameters:
        - schema:
            type: string
            example: tnt_pfh0haxfpzowht3oi213cqos
            description: >-
              Specifies the tenant context for the request. All endpoints
              operate within this tenant scope.
          in: header
          name: tenant-id
          required: true
          description: >-
            Specifies the tenant context for the request. All endpoints operate
            within this tenant scope.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                kind:
                  type: string
                  enum:
                    - BRANDING_LOGO
                    - BRANDING_BACKGROUND
                  description: Supported first-scope asset kind.
                contentType:
                  type: string
                  enum:
                    - image/png
                    - image/jpeg
                    - image/webp
                    - image/gif
                  description: Supported public raster media content type.
                sizeBytes:
                  type: integer
                  exclusiveMinimum: 0
                  maximum: 9007199254740991
                  description: Requested upload size in bytes.
                fileName:
                  type: string
                  minLength: 1
                  maxLength: 255
                  description: Original asset file name.
                  example: logo.png
              required:
                - kind
                - contentType
              additionalProperties: false
              description: Request body used to create an asset upload intent.
        description: Request body used to create an asset upload intent.
      responses:
        '201':
          description: Default Response
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: object
                    properties:
                      assetId:
                        type: string
                        minLength: 1
                        description: Unique identifier of the asset.
                        example: ast_z2b3mo8qa5kzptgsu26q2wmh
                      uploadUrl:
                        type: string
                        format: uri
                        description: Temporary presigned URL used to upload asset bytes.
                      expiresAt:
                        type: string
                        format: date-time
                        pattern: >-
                          ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$
                        description: Timestamp when the upload URL expires.
                        example: '2023-10-05T14:48:00.000Z'
                      headers:
                        type: object
                        propertyNames:
                          type: string
                        additionalProperties:
                          type: string
                        description: >-
                          Headers the browser must send with the direct upload
                          request.
                      maxSizeBytes:
                        type: integer
                        exclusiveMinimum: 0
                        maximum: 9007199254740991
                        description: Maximum allowed upload size in bytes.
                    required:
                      - assetId
                      - uploadUrl
                      - expiresAt
                      - headers
                      - maxSizeBytes
                    additionalProperties: false
                    description: Asset upload intent returned by the API.
                required:
                  - data
                additionalProperties: false
                description: Standard success response payload wrapped in a data property.
        '400':
          description: Default Response
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                    description: Machine-readable error code.
                    example: ValidationError
                  message:
                    type: string
                    description: Human-readable validation error summary.
                  details:
                    type: array
                    items:
                      type: object
                      properties:
                        field:
                          type: string
                          description: Request field that failed validation.
                        message:
                          type: string
                          description: Validation failure message for the field.
                        constraint:
                          type: string
                          description: Validation rule that was violated.
                      required:
                        - field
                        - message
                        - constraint
                      additionalProperties: false
                required:
                  - error
                  - message
                additionalProperties: false
                description: Error response returned when request validation fails.
        '401':
          description: Default Response
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    default: Unauthorized
                    description: Machine-readable error code.
                    example: Unauthorized
                    type: string
                  message:
                    default: Unauthorized
                    description: Human-readable error message.
                    example: Unauthorized
                    type: string
                required:
                  - error
                  - message
                additionalProperties: false
                description: Error response for requests without valid authentication.
        '403':
          description: Default Response
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    default: Forbidden
                    description: Machine-readable error code.
                    example: Forbidden
                    type: string
                  message:
                    default: Forbidden
                    description: Human-readable error message.
                    example: Forbidden
                    type: string
                required:
                  - error
                  - message
                additionalProperties: false
                description: Error response for requests blocked by authorization rules.
        '500':
          description: Default Response
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    default: StorageConfigurationError
                    description: Machine-readable error code.
                    example: StorageConfigurationError
                    type: string
                  message:
                    default: Storage is not configured correctly.
                    description: Human-readable error message.
                    example: Configured R2 public bucket is not available.
                    type: string
                required:
                  - error
                  - message
                additionalProperties: false
                description: >-
                  Error response when backend object storage configuration is
                  invalid.
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT

````