openapi: 3.1.0
info:
  version: '1.0'
  title: Slack Admin Access Join 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: Join
paths:
  /conversations.join:
    post:
      tags:
      - Join
      description: Joins an existing conversation.
      externalDocs:
        description: API method documentation
        url: https://api.slack.com/methods/conversations.join
      operationId: postConversationsJoin
      parameters:
      - name: token
        in: header
        description: 'Authentication token. Requires scope: `channels:write`'
        schema:
          type: string
      requestBody:
        content:
          application/x-www-form-urlencoded:
            schema:
              type: object
              properties:
                channel:
                  type: string
                  description: ID of conversation to join
          application/json:
            schema:
              type: object
              properties:
                channel:
                  type: string
                  description: ID of conversation to join
      responses:
        '200':
          description: Typical success response
          content:
            application/json:
              schema:
                title: conversations.join success schema
                required:
                - channel
                - ok
                type: object
                properties:
                  channel:
                    $ref: '#/components/schemas/objs_conversation'
                  ok:
                    $ref: '#/components/schemas/defs_ok_true'
                  response_metadata:
                    title: Response metadata
                    type: object
                    properties:
                      warnings:
                        minItems: 1
                        uniqueItems: true
                        type: array
                        items:
                          type: string
                  warning:
                    type: string
                additionalProperties: false
                description: Schema for successful response from conversations.join method
              example:
                channel:
                  created: 1449252889
                  creator: U061F7AUR
                  id: C061EG9SL
                  is_archived: false
                  is_channel: true
                  is_ext_shared: false
                  is_general: true
                  is_group: false
                  is_im: false
                  is_member: true
                  is_mpim: false
                  is_org_shared: false
                  is_pending_ext_shared: false
                  is_private: false
                  is_shared: false
                  name: general
                  name_normalized: general
                  pending_shared: []
                  previous_names: []
                  purpose:
                    creator: ''
                    last_set: 0
                    value: For widget discussion
                  topic:
                    creator: ''
                    last_set: 0
                    value: Which widget do you worry about?
                  unlinked: 0
                ok: true
                response_metadata:
                  warnings:
                  - already_in_channel
                warning: already_in_channel
        default:
          description: Typical error response if the conversation is archived and cannot be joined
          content:
            application/json:
              schema:
                title: conversations.join 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:
                    - method_not_supported_for_channel_type
                    - missing_scope
                    - channel_not_found
                    - is_archived
                    - not_authed
                    - invalid_auth
                    - account_inactive
                    - user_is_bot
                    - user_is_restricted
                    - user_is_ultra_restricted
                    - invalid_arg_name
                    - invalid_array_arg
                    - invalid_charset
                    - invalid_form_data
                    - invalid_post_type
                    - missing_post_type
                    - invalid_json
                    - json_not_object
                    - request_timeout
                    - upgrade_required
                    - team_added_to_org
                    - missing_charset
                    - superfluous_charset
                  needed:
                    type: string
                  ok:
                    $ref: '#/components/schemas/defs_ok_false'
                  provided:
                    type: string
                additionalProperties: false
                description: Schema for error response from conversations.join method
              example:
                error: is_archived
                ok: false
      security:
      - slackAuth:
        - channels:write
      summary: Slack Post Conversations Join
      x-api-evangelist-processing:
        GenerateOperationSummariesFromPath: true
        PascalCaseOperationSummaries: true
        CaselCaseOperationIds: true
        ChooseTags: true
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK