openapi: 3.0.3
info:
  title: Knock Audiences Accounts Channels API
  version: '1.0'
  description: Manage static Audiences and their members. Audiences power lifecycle messaging — when a user joins an audience, configured workflows fire automatically.
  contact:
    name: Knock
    url: https://knock.app
  license:
    name: Proprietary
servers:
- url: https://api.knock.app
  variables: {}
security:
- BearerAuth: []
tags:
- name: Channels
paths:
  /v1/channels:
    get:
      callbacks: {}
      description: 'Returns a paginated list of channels. Note: the list of channels is across the entire account, not scoped to an environment.'
      operationId: listChannels
      parameters:
      - description: A channel id to filter the results by.
        in: query
        name: id
        required: false
        schema:
          format: uuid
          type: string
          x-struct: null
          x-validate: null
      - description: Associated resources to include in the response. Accepts `environment_settings` to include per-environment channel configuration.
        in: query
        name: include
        required: false
        schema:
          items:
            enum:
            - environment_settings
            type: string
            x-struct: null
            x-validate: null
          type: array
          x-struct: null
          x-validate: null
      - description: The cursor to fetch entries after.
        in: query
        name: after
        required: false
        schema:
          type: string
          x-struct: null
          x-validate: null
      - description: The cursor to fetch entries before.
        in: query
        name: before
        required: false
        schema:
          type: string
          x-struct: null
          x-validate: null
      - description: The number of entries to fetch per-page.
        in: query
        name: limit
        required: false
        schema:
          type: integer
          x-struct: null
          x-validate: null
      responses:
        '200':
          content:
            application/json:
              schema:
                description: A paginated list of Channel. Contains a list of entries and page information.
                example:
                  entries:
                  - archived_at: null
                    created_at: '2021-01-01T00:00:00Z'
                    custom_icon_url: null
                    id: 01234567-89ab-cdef-0123-456789abcdef
                    key: my-sendgrid-channel
                    name: My Sendgrid Channel
                    provider: sendgrid
                    type: email
                    updated_at: '2021-01-01T00:00:00Z'
                  page_info:
                    after: null
                    before: null
                    page_size: 25
                properties:
                  entries:
                    description: A list of entries.
                    items:
                      $ref: '#/components/schemas/Channel'
                    nullable: false
                    type: array
                    x-struct: null
                    x-validate: null
                  page_info:
                    $ref: '#/components/schemas/PageInfo'
                required:
                - entries
                - page_info
                title: PaginatedChannelResponse
                type: object
                x-struct: null
                x-validate: null
          description: OK
      summary: List channels
      tags:
      - Channels
  /v1/channels/{channel_key}:
    get:
      callbacks: {}
      description: Returns a channel with all environment-specific settings. Secret values in provider settings are obfuscated unless they are Liquid templates (e.g., `{{ vars.api_key }}`).
      operationId: getChannel
      parameters:
      - description: The key of the channel to retrieve.
        in: path
        name: channel_key
        required: true
        schema:
          type: string
          x-struct: null
          x-validate: null
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Channel'
          description: OK
      summary: Get a channel
      tags:
      - Channels
components:
  schemas:
    Channel:
      description: A configured channel, which is a way to route messages to a provider.
      example:
        archived_at: null
        created_at: '2021-01-01T00:00:00Z'
        custom_icon_url: null
        id: 01234567-89ab-cdef-0123-456789abcdef
        key: my-sendgrid-channel
        name: My Sendgrid Channel
        provider: sendgrid
        type: email
        updated_at: '2021-01-01T00:00:00Z'
      properties:
        archived_at:
          description: The timestamp of when the channel was deleted.
          format: date-time
          nullable: true
          type: string
          x-struct: null
          x-validate: null
        created_at:
          description: The timestamp of when the channel was created.
          format: date-time
          type: string
          x-struct: null
          x-validate: null
        custom_icon_url:
          description: Optional URL to a custom icon for the channel. Only used for display purposes in the dashboard.
          nullable: true
          type: string
          x-struct: null
          x-validate: null
        description:
          description: Optional description of the channel's purpose or usage.
          nullable: true
          type: string
          x-struct: null
          x-validate: null
        environment_settings:
          additionalProperties:
            $ref: '#/components/schemas/ChannelEnvironmentSettings'
          description: Per-environment settings for this channel, keyed by environment slug (e.g., 'development', 'production'). Only included when requested via the `include` parameter or when retrieving a single channel.
          nullable: true
          type: object
          x-struct: null
          x-validate: null
        id:
          description: The unique identifier for the channel.
          type: string
          x-struct: null
          x-validate: null
        key:
          description: Unique identifier for the channel within a project (immutable once created).
          type: string
          x-struct: null
          x-validate: null
        name:
          description: The human-readable name of the channel.
          type: string
          x-struct: null
          x-validate: null
        provider:
          description: The ID of the provider that this channel uses to deliver messages. Learn more about the providers available [in our documentation](https://docs.knock.app/integrations/overview).
          type: string
          x-struct: null
          x-validate: null
        type:
          description: The type of channel, determining what kind of messages it can send.
          enum:
          - email
          - in_app
          - in_app_feed
          - in_app_guide
          - sms
          - push
          - chat
          - http
          type: string
          x-struct: null
          x-validate: null
        updated_at:
          description: The timestamp of when the channel was last updated.
          format: date-time
          type: string
          x-struct: null
          x-validate: null
      required:
      - id
      - name
      - key
      - type
      - provider
      - created_at
      - updated_at
      title: Channel
      type: object
      x-struct: Elixir.ControlWeb.V1.Specs.Channel
      x-validate: null
    PageInfo:
      description: The information about a paginated result.
      example:
        after: null
        before: null
        page_size: 25
      properties:
        after:
          description: The cursor to fetch entries after. Will only be present if there are more entries to fetch.
          nullable: true
          type: string
          x-struct: null
          x-validate: null
        before:
          description: The cursor to fetch entries before. Will only be present if there are more entries to fetch before the current page.
          nullable: true
          type: string
          x-struct: null
          x-validate: null
        page_size:
          description: The number of entries to fetch per-page.
          type: integer
          x-struct: null
          x-validate: null
      required:
      - page_size
      title: PageInfo
      type: object
      x-struct: Elixir.ControlWeb.V1.Specs.PageInfo
      x-validate: null
    ChannelEnvironmentSettings:
      description: Environment-specific settings for a channel.
      example:
        channel_settings:
          from_address: hello@example.com
          from_name: Example Inc
        id: 550e8400-e29b-41d4-a716-446655440001
        is_sandbox: false
        is_valid: true
        provider_settings:
          api_key: '{{ vars.sendgrid_api_key }}'
          check_delivery_status: true
          link_tracking: true
          open_tracking: true
      properties:
        channel_settings:
          additionalProperties: true
          description: Channel-type-specific settings (e.g., from_address for email). Structure varies by channel type.
          nullable: true
          type: object
          x-struct: null
          x-validate: null
        id:
          description: The unique identifier for these environment settings.
          format: uuid
          type: string
          x-struct: null
          x-validate: null
        is_sandbox:
          description: Whether the channel is in sandbox mode for this environment. Sandbox mode may prevent actual message delivery.
          type: boolean
          x-struct: null
          x-validate: null
        is_valid:
          description: Whether the channel configuration is valid and ready to send messages in this environment.
          type: boolean
          x-struct: null
          x-validate: null
        provider_settings:
          additionalProperties: true
          description: Provider-specific settings (e.g., API keys, credentials). Structure varies by provider. Secret values are obfuscated unless they are Liquid templates.
          nullable: true
          type: object
          x-struct: null
          x-validate: null
      required:
      - id
      - is_valid
      - is_sandbox
      title: ChannelEnvironmentSettings
      type: object
      x-struct: Elixir.ControlWeb.V1.Specs.ChannelEnvironmentSettings
      x-validate: null
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: Knock API key as a Bearer token. Use a public key (pk_...) for client-side requests or a secret key (sk_...) for server-side.