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

# Upload asset bytes (POST form of the same upload URL)



## OpenAPI

````yaml /openapi/buyer.yaml post /api/v2/buyer/assets/uploads/{uploadId}
openapi: 3.1.0
info:
  title: Semicola Exchange buyer API
  version: 2.0.0
  description: >-
    Buyer endpoints: advertisers, storefronts and connections, product
    discovery, campaigns, proposals, media buys, creatives and reporting. Every
    write accepts an Idempotency-Key header.
servers:
  - url: https://api.semicola.com
security:
  - bearerAuth: []
  - sessionCookie: []
tags:
  - name: Advertisers
  - name: Storefronts
  - name: Product Discovery
  - name: Campaigns
  - name: Media Buys
  - name: Creatives
  - name: Reporting
  - name: Event Sources
  - name: Webhooks
  - name: Tasks
  - name: Audit Logs
paths:
  /api/v2/buyer/assets/uploads/{uploadId}:
    post:
      tags:
        - Creatives
      summary: Upload asset bytes (POST form of the same upload URL)
      operationId: postBuyerAssetsUploadsByUploadId
      parameters:
        - name: uploadId
          in: path
          required: true
          schema:
            type: string
            minLength: 1
        - name: token
          in: query
          required: true
          schema:
            type: string
            minLength: 1
      requestBody:
        required: true
        content:
          application/octet-stream:
            schema:
              type: string
              format: binary
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    anyOf:
                      - type: object
                        properties:
                          assetId:
                            type: string
                          bytes:
                            type: integer
                            minimum: 0
                            maximum: 9007199254740991
                        required:
                          - assetId
                          - bytes
                        additionalProperties: false
                      - type: 'null'
                  error:
                    anyOf:
                      - type: object
                        properties:
                          code:
                            type: string
                          message:
                            type: string
                          field:
                            type: string
                          details: {}
                        required:
                          - code
                          - message
                        additionalProperties: false
                      - type: 'null'
                required:
                  - data
                  - error
                additionalProperties: false
        default:
          description: >-
            Error envelope `{data: null, error: {code, message, field?,
            details?}}`.
      security: []
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: API key or OAuth access token.
    sessionCookie:
      type: apiKey
      in: cookie
      name: sc_session

````