openapi: 3.1.0
info:
  version: '1.0'
  title: Slack Admin Access Upload API
  description: "The Slack Admin API is a set of privileged endpoints\x14primarily under admin.* with related SCIM and Audit Logs APIs\x14that lets Enterprise Grid owners and admins automate organization\x11 wide management and governance. It covers user lifecycle (provision, suspend, assign roles), workspace and channel administration across workspaces (create, move, archive channels; manage membership and settings), app governance (approve/deny or allowlist/ban apps and install them to workspaces), invite request handling, and security/compliance controls such as information barriers, session and authentication policies, and org\x11level analytics exports. These APIs require elevated admin scopes and are commonly used to power automated onboarding/offboarding, centralized channel and app controls, and integrations with identity, ITSM, and compliance systems."
tags:
- name: Upload
paths:
  /files.upload:
    post:
      tags:
      - Upload
      description: Uploads or creates a file.
      externalDocs:
        description: API method documentation
        url: https://api.slack.com/methods/files.upload
      operationId: postFilesUpload
      requestBody:
        content:
          application/x-www-form-urlencoded:
            schema:
              type: object
              properties:
                token:
                  type: string
                  description: 'Authentication token. Requires scope: `files:write:user`'
                file:
                  type: string
                  description: File contents via `multipart/form-data`. If omitting this parameter, you must submit `content`.
                content:
                  type: string
                  description: File contents via a POST variable. If omitting this parameter, you must provide a `file`.
                filetype:
                  type: string
                  description: A [file type](/types/file#file_types) identifier.
                filename:
                  type: string
                  description: Filename of file.
                title:
                  type: string
                  description: Title of file.
                initial_comment:
                  type: string
                  description: The message text introducing the file in specified `channels`.
                channels:
                  type: string
                  description: Comma-separated list of channel names or IDs where the file will be shared.
                thread_ts:
                  type: number
                  description: Provide another message's `ts` value to upload this file as a reply. Never use a reply's `ts` value; use its parent instead.
      responses:
        '200':
          description: Success response after uploading a file to a channel with an initial message
          content:
            application/json:
              schema:
                title: files.upload schema
                required:
                - file
                - ok
                type: object
                properties:
                  file:
                    $ref: '#/components/schemas/objs_file'
                  ok:
                    $ref: '#/components/schemas/defs_ok_true'
                additionalProperties: false
                description: Schema for successful response files.upload method
              example:
                file:
                  channels: []
                  comments_count: 0
                  created: 1532293501
                  display_as_bot: false
                  editable: false
                  external_type: ''
                  filetype: gif
                  groups: []
                  has_rich_preview: false
                  id: F0TD00400
                  image_exif_rotation: 1
                  ims:
                  - D0L4B9P0Q
                  is_external: false
                  is_public: false
                  is_starred: false
                  mimetype: image/jpeg
                  mode: hosted
                  name: dramacat.gif
                  original_h: 366
                  original_w: 526
                  permalink: https://.../dramacat.gif
                  permalink_public: https://.../More-Path-Components
                  pretty_type: JPEG
                  public_url_shared: false
                  shares:
                    private:
                      D0L4B9P0Q:
                      - reply_count: 0
                        reply_users: []
                        reply_users_count: 0
                        ts: '1532293503.000001'
                  size: 43518
                  thumb_160: https://.../dramacat_160.gif
                  thumb_360: https://.../dramacat_360.gif
                  thumb_360_h: 250
                  thumb_360_w: 360
                  thumb_480: https://.../dramacat_480.gif
                  thumb_480_h: 334
                  thumb_480_w: 480
                  thumb_64: https://.../dramacat_64.gif
                  thumb_80: https://.../dramacat_80.gif
                  timestamp: 1532293501
                  title: dramacat
                  url_private: https://.../dramacat.gif
                  url_private_download: https://.../dramacat.gif
                  user: U0L4B9NSU
                  username: ''
                ok: true
        default:
          description: Typical error response
          content:
            application/json:
              schema:
                title: files.upload error schema
                required:
                - error
                - ok
                type: object
                properties:
                  callstack:
                    type: string
                    description: 'Note: PHP callstack is only visible in dev/qa'
                  error:
                    type: string
                    enum:
                    - posting_to_general_channel_denied
                    - invalid_channel
                    - file_uploads_disabled
                    - file_uploads_except_images_disabled
                    - storage_limit_reached
                    - not_authed
                    - invalid_auth
                    - account_inactive
                    - no_permission
                    - invalid_arg_name
                    - invalid_array_arg
                    - invalid_charset
                    - invalid_form_data
                    - invalid_post_type
                    - missing_post_type
                    - team_added_to_org
                    - invalid_json
                    - json_not_object
                    - request_timeout
                    - upgrade_required
                  ok:
                    $ref: '#/components/schemas/defs_ok_false'
                additionalProperties: false
                description: Schema for error response files.upload method
              example:
                error: invalid_auth
                ok: false
      security:
      - slackAuth:
        - files:write:user
      summary: Slack Post Files Upload
      x-api-evangelist-processing:
        GenerateOperationSummariesFromPath: true
        PascalCaseOperationSummaries: true
        CaselCaseOperationIds: true
        ChooseTags: true
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK