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

# Re-sign multipart upload parts

> Issue fresh presigned URLs for parts whose original URLs expired mid-upload. Parts already uploaded keep their ETags — only re-upload the ones that failed.



## OpenAPI

````yaml https://api.bundle.social/swagger-json post /api/v1/upload/multipart/sign
openapi: 3.0.2
info:
  title: bundle.social API
  description: >-
    REST API for social media management. Perfect for AI assistants, GPTs,
    automation tools, and integrations. Post to 14+ platforms including Twitter,
    Instagram, Facebook, LinkedIn, TikTok, Pinterest, Reddit, Discord, Slack,
    YouTube, Mastodon, Bluesky, Threads, and Google Business. Schedule posts,
    manage content, analyze performance, and automate your social media workflow
    across all platforms.
  version: 1.0.0
  contact:
    email: contact@bundle.social
  termsOfService: https://bundle.social/terms
servers:
  - url: https://api.bundle.social
  - url: http://localhost:3001
security:
  - ApiKeyAuth: []
tags:
  - name: app
  - name: organization
  - name: team
  - name: socialAccount
  - name: upload
  - name: post
  - name: postImport
  - name: analytics
  - name: comment
  - name: misc
  - name: postCSV
paths:
  /api/v1/upload/multipart/sign:
    post:
      tags:
        - upload
      summary: Re-sign multipart upload parts
      description: >-
        Issue fresh presigned URLs for parts whose original URLs expired
        mid-upload. Parts already uploaded keep their ETags — only re-upload the
        ones that failed.
      operationId: upload.signMultipartParts
      parameters: []
      requestBody:
        description: Body
        content:
          application/json:
            schema:
              type: object
              properties:
                teamId:
                  type: string
                  nullable: true
                partNumbers:
                  type: array
                  items:
                    type: integer
                    minimum: 1
                    maximum: 10000
                  minItems: 1
                  maxItems: 10000
                path:
                  type: string
                uploadId:
                  type: string
              required:
                - partNumbers
                - path
                - uploadId
      responses:
        '200':
          description: '200'
          content:
            application/json:
              schema:
                type: object
                properties:
                  parts:
                    type: array
                    items:
                      type: object
                      properties:
                        partNumber:
                          type: integer
                          minimum: 1
                          maximum: 10000
                        url:
                          type: string
                          format: uri
                      required:
                        - partNumber
                        - url
                required:
                  - parts
        '400':
          description: '400'
          content:
            application/json:
              schema:
                type: object
                properties:
                  statusCode:
                    type: number
                    nullable: true
                  message:
                    type: string
                  issues:
                    type: array
                    items:
                      type: object
                      properties:
                        code:
                          type: string
                          enum:
                            - invalid_type
                            - invalid_literal
                            - custom
                            - invalid_union
                            - invalid_union_discriminator
                            - invalid_enum_value
                            - unrecognized_keys
                            - invalid_arguments
                            - invalid_return_type
                            - invalid_date
                            - invalid_string
                            - too_small
                            - too_big
                            - invalid_intersection_types
                            - not_multiple_of
                            - not_finite
                          nullable: true
                        message:
                          type: string
                        path:
                          type: array
                          items:
                            oneOf:
                              - type: string
                              - type: number
                          nullable: true
                      required:
                        - message
                    nullable: true
                required:
                  - message
        '401':
          description: '401'
          content:
            application/json:
              schema:
                type: object
                properties:
                  statusCode:
                    type: number
                    nullable: true
                  message:
                    type: string
                required:
                  - message
        '403':
          description: '403'
          content:
            application/json:
              schema:
                type: object
                properties:
                  statusCode:
                    type: number
                    nullable: true
                  message:
                    type: string
                required:
                  - message
        '404':
          description: '404'
          content:
            application/json:
              schema:
                type: object
                properties:
                  statusCode:
                    type: number
                    nullable: true
                  message:
                    type: string
                required:
                  - message
        '429':
          description: '429'
          content:
            application/json:
              schema:
                type: object
                properties:
                  statusCode:
                    type: number
                    nullable: true
                  message:
                    type: string
                required:
                  - message
        '500':
          description: '500'
          content:
            application/json:
              schema:
                type: object
                properties:
                  statusCode:
                    type: number
                    nullable: true
                  message:
                    type: string
                required:
                  - message
components:
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      name: x-api-key
      in: header

````