Courier Send API

openapi: 3.0.1
info:
  title: Courier Audiences Send API
  description: The Courier REST API.
  version: "1.0"
servers:
- url: https://api.courier.com
  description: Production
tags:
- name: Send
paths:
  /send:
    post:
      description: Send a message to one or more recipients.
      operationId: send
      tags:
      - Send
      parameters: []
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SendMessageResponse'
              examples:
                Example1:
                  value:
                    requestId: 1-65f240a0-47a6a120c8374de9bcf9f22a
      summary: Send a message
      security:
      - BearerAuth: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                message:
                  $ref: '#/components/schemas/Message'
                  description: Defines the message to be delivered
              required:
              - message
            examples:
              Example1:
                summary: Send message with UserRecipient
                description: Default example using UserRecipient type
                value:
                  message:
                    to:
                      user_id: user_id
                    template: template_id
                    data:
                      foo: bar
              Example2:
                value:
                  message:
                    to:
                      email: user@example.com
                    template: template_id
                    data:
                      foo: bar
              Example3:
                value:
                  message:
                    to:
                      phone_number: '+1234567890'
                    template: template_id
                    data:
                      foo: bar
              Example4:
                value:
                  message:
                    to:
                      list_id: example_list
                    template: template_id
                    data:
                      foo: bar
              Example5:
                value:
                  message:
                    to:
                      user_id: example_user
                    content:
                      title: Hello {name}
                      body: How are you?
                    data:
                      name: Ben
                    routing:
                      method: single
                      channels:
                      - email
components:
  schemas:
    MessageChannels:
      title: MessageChannels
      type: object
      additionalProperties:
        $ref: '#/components/schemas/Channel'
    Locale:
      title: Locale
      type: object
      properties:
        content:
          type: string
      required:
      - content
    WebhookAuthMode:
      title: WebhookAuthMode
      type: string
      enum:
      - none
      - basic
      - bearer
    Preference:
      title: Preference
      type: object
      properties:
        status:
          $ref: '#/components/schemas/PreferenceStatus'
        rules:
          type: array
          items:
            $ref: '#/components/schemas/Rule'
          nullable: true
        channel_preferences:
          type: array
          items:
            $ref: '#/components/schemas/ChannelPreference'
          nullable: true
        source:
          $ref: '#/components/schemas/ChannelSource'
          nullable: true
      required:
      - status
    ElementalMetaNode:
      title: ElementalMetaNode
      type: object
      description: "The meta element contains information describing the notification that may \nbe used by a particular channel or provider. One important field is the title \nfield which will be used as the title for channels that support it."
      properties:
        title:
          type: string
          nullable: true
          description: The title to be displayed by supported channels. For example, the email subject.
      allOf:
      - $ref: '#/components/schemas/ElementalBaseNode'
    ElementalDividerNode:
      title: ElementalDividerNode
      type: object
      description: Renders a dividing line between elements.
      properties:
        color:
          type: string
          nullable: true
          description: The CSS color to render the line with. For example, `#fff`
      allOf:
      - $ref: '#/components/schemas/ElementalBaseNode'
    TextStyle:
      title: TextStyle
      type: string
      enum:
      - text
      - h1
      - h2
      - subtext
    ElementalChannelNode:
      title: ElementalChannelNode
      type: object
      description: "The channel element allows a notification to be customized based on which channel it is sent through. \nFor example, you may want to display a detailed message when the notification is sent through email, \nand a more concise message in a push notification. Channel elements are only valid as top-level \nelements; you cannot nest channel elements. If there is a channel element specified at the top-level \nof the document, all sibling elements must be channel elements.\nNote: As an alternative, most elements support a `channel` property. Which allows you to selectively \ndisplay an individual element on a per channel basis. See the \n[control flow docs](https://www.courier.com/docs/platform/content/elemental/control-flow/) for more details."
      properties:
        channel:
          type: string
          example: email
          description: 'The channel the contents of this element should be applied to. Can be `email`,

            `push`, `direct_message`, `sms` or a provider such as slack'
        raw:
          type: object
          additionalProperties: true
          nullable: true
          description: Raw data to apply to the channel. If `elements` has not been specified, `raw` is required.
      allOf:
      - $ref: '#/components/schemas/ElementalBaseNode'
    Criteria:
      title: Criteria
      type: string
      enum:
      - no-escalation
      - delivered
      - viewed
      - engaged
    IActionButtonStyle:
      title: IActionButtonStyle
      type: string
      enum:
      - button
      - link
    AudienceFilter:
      title: AudienceFilter
      type: object
      properties:
        operator:
          type: string
          enum:
          - MEMBER_OF
          description: Send to users only if they are member of the account
        path:
          type: string
          enum:
          - account_id
        value:
          type: string
      required:
      - operator
      - path
      - value
    ContentMessage:
      title: ContentMessage
      type: object
      description: The message property has the following primary top-level properties. They define the destination and content of the message.
      properties:
        content:
          $ref: '#/components/schemas/Content'
          description: Describes content that will work for email, inbox, push, chat, or any channel id.
      allOf:
      - $ref: '#/components/schemas/BaseMessage'
      - $ref: '#/components/schemas/BaseMessageSendTo'
    Metadata:
      title: Metadata
      type: object
      properties:
        utm:
          $ref: '#/components/schemas/UTM'
          nullable: true
      x-stainless-naming:
        csharp:
          type_name: ProviderMetadata
    ElementalContent:
      title: ElementalContent
      type: object
      properties:
        version:
          type: string
          description: For example, "2022-01-01"
        elements:
          type: array
          items:
            $ref: '#/components/schemas/ElementalNode'
      required:
      - version
      - elements
    Slack:
      title: Slack
      oneOf:
      - $ref: '#/components/schemas/SendToSlackChannel'
      - $ref: '#/components/schemas/SendToSlackEmail'
      - $ref: '#/components/schemas/SendToSlackUserId'
    WebhookMethod:
      title: WebhookMethod
      type: string
      enum:
      - POST
      - PUT
    WebhookRecipient:
      title: Webhook Recipient
      description: Send via webhook
      type: object
      properties:
        webhook:
          $ref: '#/components/schemas/WebhookProfile'
      required:
      - webhook
    MsTeamsRecipient:
      title: MS Teams Recipient
      description: Send via Microsoft Teams
      type: object
      properties:
        ms_teams:
          $ref: '#/components/schemas/MsTeams'
      required:
      - ms_teams
    SendMessageResponse:
      title: SendMessageResponse
      type: object
      properties:
        requestId:
          type: string
          description: 'A successful call to `POST /send` returns a `202` status code along with a `requestId` in the response body.

            For single-recipient requests, the `requestId` is the derived message_id. For multiple recipients, Courier assigns a unique message_id to each derived message.'
          example: 1-65f240a0-47a6a120c8374de9bcf9f22c
      required:
      - requestId
    MessageRecipient:
      title: MessageRecipient
      description: The recipient of a message. Can be a single recipient or an array of recipients.
      oneOf:
      - $ref: '#/components/schemas/Recipient'
      - type: array
        items:
          $ref: '#/components/schemas/Recipient'
    ElementalBaseNode:
      title: ElementalBaseNode
      type: object
      properties:
        channels:
          type: array
          items:
            type: string
          nullable: true
        ref:
          type: string
          nullable: true
        if:
          type: string
          nullable: true
        loop:
          type: string
          nullable: true
    Expiry:
      title: Expiry
      type: object
      properties:
        expires_at:
          type: string
          nullable: true
          description: Epoch or ISO8601 timestamp with timezone.
        expires_in:
          $ref: '#/components/schemas/ExpiresInType'
          description: Duration in ms or ISO8601 duration (e.g. P1DT4H).
      required:
      - expires_in
    SendToMsTeamsChannelId:
      title: SendToMsTeamsChannelId
      type: object
      properties:
        tenant_id:
          type: string
        service_url:
          type: string
        channel_id:
          type: string
      required:
      - tenant_id
      - service_url
      - channel_id
    MsTeams:
      title: MsTeams
      oneOf:
      - $ref: '#/components/schemas/SendToMsTeamsUserId'
      - $ref: '#/components/schemas/SendToMsTeamsEmail'
      - $ref: '#/components/schemas/SendToMsTeamsChannelId'
      - $ref: '#/components/schemas/SendToMsTeamsConversationId'
      - $ref: '#/components/schemas/SendToMsTeamsChannelName'
    ListFilter:
      title: ListFilter
      type: object
      properties:
        operator:
          type: string
          enum:
          - MEMBER_OF
          description: Send to users only if they are member of the account
        path:
          type: string
          enum:
          - account_id
        value:
          type: string
      required:
      - operator
      - path
      - value
    MessageMetadata:
      title: MessageMetadata
      type: object
      properties:
        event:
          type: string
          nullable: true
        tags:
          type: array
          items:
            type: string
          nullable: true
        utm:
          $ref: '#/components/schemas/UTM'
          nullable: true
        trace_id:
          type: string
          nullable: true
    PreferenceStatus:
      title: PreferenceStatus
      type: string
      enum:
      - OPTED_IN
      - OPTED_OUT
      - REQUIRED
    ChannelClassification:
      title: ChannelClassification
      type: string
      enum:
      - direct_message
      - email
      - push
      - sms
      - webhook
      - inbox
    Rule:
      title: Rule
      type: object
      properties:
        start:
          type: string
          nullable: true
        until:
          type: string
      required:
      - until
    MessageData:
      title: MessageData
      type: object
      additionalProperties: true
    Timeouts:
      title: Timeouts
      type: object
      properties:
        provider:
          type: integer
          nullable: true
        channel:
          type: integer
          nullable: true
      x-stainless-naming:
        csharp:
          type_name: ChannelTimeouts
    WebhookAuthentication:
      title: WebhookAuthentication
      type: object
      properties:
        mode:
          $ref: '#/components/schemas/WebhookAuthMode'
          description: The authentication mode to use. Defaults to 'none' if not specified.
        username:
          type: string
          nullable: true
          description: Username for basic authentication.
        password:
          type: string
          nullable: true
          description: Password for basic authentication.
        token:
          type: string
          nullable: true
          description: Token for bearer authentication.
      required:
      - mode
    ListPatternRecipient:
      title: List Pattern Recipient
      description: Send to users in lists matching a pattern
      type: object
      properties:
        list_pattern:
          type: string
          nullable: true
        data:
          $ref: '#/components/schemas/MessageData'
          nullable: true
    ListRecipient:
      title: List Recipient
      description: Send to all users in a specific list
      type: object
      properties:
        list_id:
          type: string
          nullable: true
        data:
          $ref: '#/components/schemas/MessageData'
          nullable: true
        filters:
          type: array
          items:
            $ref: '#/components/schemas/ListFilter'
          nullable: true
    ElementalNode:
      title: ElementalNode
      oneOf:
      - type: object
        allOf:
        - type: object
          properties:
            type:
              type: string
              enum:
              - text
        - $ref: '#/components/schemas/ElementalTextNode'
        required:
        - type
      - type: object
        allOf:
        - type: object
          properties:
            type:
              type: string
              enum:
              - meta
        - $ref: '#/components/schemas/ElementalMetaNode'
        required:
        - type
      - type: object
        allOf:
        - type: object
          properties:
            type:
              type: string
              enum:
              - channel
        - $ref: '#/components/schemas/ElementalChannelNode'
        required:
        - type
        - channel
      - type: object
        allOf:
        - type: object
          properties:
            type:
              type: string
              enum:
              - image
        - $ref: '#/components/schemas/ElementalImageNode'
        required:
        - type
      - type: object
        allOf:
        - type: object
          properties:
            type:
              type: string
              enum:
              - action
        - $ref: '#/components/schemas/ElementalActionNode'
        required:
        - type
      - type: object
        allOf:
        - type: object
          properties:
            type:
              type: string
              enum:
              - divider
        - $ref: '#/components/schemas/ElementalDividerNode'
        required:
        - type
      - type: object
        allOf:
        - type: object
          properties:
            type:
              type: string
              enum:
              - quote
        - $ref: '#/components/schemas/ElementalQuoteNode'
        required:
        - type
      - type: object
        allOf:
        - type: object
          properties:
            type:
              type: string
              enum:
              - html
        - $ref: '#/components/schemas/ElementalHtmlNode'
        required:
        - type
    BaseMessage:
      title: BaseMessage
      type: object
      properties:
        template:
          type: string
          nullable: true
        data:
          $ref: '#/components/schemas/MessageData'
          nullable: true
        brand_id:
          type: string
          nullable: true
        channels:
          $ref: '#/components/schemas/MessageChannels'
          nullable: true
          description: 'Define run-time configuration for channels. Valid ChannelId''s: email, sms, push, inbox, direct_message, banner, webhook.'
        context:
          $ref: '#/components/schemas/MessageContext'
          nullable: true
        metadata:
          $ref: '#/components/schemas/MessageMetadata'
          nullable: true
        preferences:
          $ref: '#/components/schemas/MessagePreferences'
          nullable: true
        providers:
          $ref: '#/components/schemas/MessageProviders'
          nullable: true
        routing:
          $ref: '#/components/schemas/Routing'
          nullable: true
        timeout:
          $ref: '#/components/schemas/Timeout'
          nullable: true
        delay:
          $ref: '#/components/schemas/Delay'
          nullable: true
        expiry:
          $ref: '#/components/schemas/Expiry'
          nullable: true
    Preferences:
      title: Preferences
      type: object
      additionalProperties:
        $ref: '#/components/schemas/Preference'
    BaseMessageSendTo:
      title: BaseMessageSendTo
      type: object
      properties:
        to:
          $ref: '#/components/schemas/MessageRecipient'
          nullable: true
          description: The recipient or a list of recipients of the message
    IAlignment:
      title: IAlignment
      type: string
      enum:
      - center
      - left
      - right
      - full
    Channel:
      title: Channel
      type: object
      properties:
        brand_id:
          type: string
          nullable: true
          description: Brand id used for rendering.
        providers:
          type: array
          items:
            type: string
          nullable: true
          description: Providers enabled for this channel.
        routing_method:
          $ref: '#/components/schemas/RoutingMethod'
          nullable: true
          description: Defaults to `single`.
        if:
          type: string
          nullable: true
          description: JS conditional with access to data/profile.
        timeouts:
          $ref: '#/components/schemas/Timeouts'
          nullable: true
        override:
          type: object
          additionalProperties: true
          nullable: true
          description: Channel specific overrides.
        metadata:
          $ref: '#/components/schemas/ChannelMetadata'
          nullable: true
      x-stainless-naming:
        csharp:
          type_name: MessageChannel
    ProfilePreferences:
      title: ProfilePreferences
      type: object
      properties:
        categories:
          $ref: '#/components/schemas/Preferences'
          nullable: true
        notifications:
          $ref: '#/components/schemas/Preferences'
        templateId:
          type: string
          nullable: true
      required:
      - notifications
    MessageRoutingChannel:
      title: MessageRoutingChannel
      oneOf:
      - type: string
      - $ref: '#/components/schemas/MessageRouting'
    MessageRoutingMethod:
      title: MessageRoutingMethod
      type: string
      enum:
      - all
      - single
    Pagerduty:
      title: Pagerduty
      type: object
      properties:
        routing_key:
          type: string
          nullable: true
        event_action:
          type: string
          nullable: true
        severity:
          type: string
          nullable: true
        source:
          type: string
          nullable: true
    SendToMsTeamsUserId:
      title: SendToMsTeamsUserId
      type: object
      properties:
        tenant_id:
          type: string
        service_url:
          type: string
        user_id:
          type: string
      required:
      - tenant_id
      - service_url
      - user_id
    MessageProvidersType:
      title: MessageProvidersType
      type: object
      properties:
        override:
          type: object
          additionalProperties: true
          nullable: true
          description: Provider-specific overrides.
        if:
          type: string
          nullable: true
          description: JS conditional with access to data/profile.
        timeouts:
          type: integer
          nullable: true
        metadata:
          $ref: '#/components/schemas/Metadata'
          nullable: true
    RoutingMethod:
      title: RoutingMethod
      type: string
      enum:
      - all
      - single
    SendToMsTeamsChannelName:
      title: SendToMsTeamsChannelName
      type: object
      properties:
        tenant_id:
          type: string
        service_url:
          type: string
        channel_name:
          type: string
        team_id:
          type: string
      required:
      - tenant_id
      - service_url
      - channel_name
      - team_id
    ElementalHtmlNode:
      title: ElementalHtmlNode
      type: object
      description: Raw HTML string inside an Elemental document. When rendering a message, this node is turned into output only for the email channel; for other channels it produces no blocks.
      properties:
        content:
          type: string
          description: Raw HTML string to render inside the notification.
        locales:
          $ref: '#/components/schemas/Locales'
          nullable: true
          description: Region-specific `content` overrides. See [locales docs](https://www.courier.com/docs/platform/content/elemental/locales/) for more details.
      required:
      - content
      allOf:
      - $ref: '#/components/schemas/ElementalBaseNode'
    ElementalTextNode:
      title: ElementalTextNode
      type: object
      description: Represents a body of text to be rendered inside of the notification.
      properties:
        content:
          type: string
          description: 'The text content displayed in the notification. Either this

            field must be specified, or the elements field'
        align:
          $ref: '#/components/schemas/TextAlign'
          description: Text alignment.
        text_style:
          $ref: '#/components/schemas/TextStyle'
          nullable: true
          description: Allows the text to be rendered as a heading level.
        color:
          type: string
          nullable: true
          description: Specifies the color of text. Can be any valid css color value
        bold:
          type: string
          nullable: true
          description: Apply bold to the text
        italic:
          type: string
          nullable: true
          description: Apply italics to the text
        strikethrough:
          type: string
          nullable: true
          description: Apply a strike through the text
        underline:
          type: string
          nullable: true
          description: Apply an underline to the text
        locales:
          $ref: '#/components/schemas/Locales'
          nullable: true
          description: Region specific content. See [locales docs](https://www.courier.com/docs/platform/content/elemental/locales/) for more details.
        format:
          type: string
          enum:
          - markdown
          nullable: true
      required:
      - content
      - align
      allOf:
      - $ref: '#/components/schemas/ElementalBaseNode'
    Timeout:
      title: Timeout
      type: object
      properties:
        provider:
          type: object
          additionalProperties:
            type: integer
          nullable: true
        channel:
          type: object
          additionalProperties:
            type: integer
          nullable: true
        message:
          type: integer
          nullable: true
        escalation:
          type: integer
          nullable: true
        criteria:
          $ref: '#/components/schemas/Criteria'
          nullable: true
    SendToMsTeamsConversationId:
      title: SendToMsTeamsConversationId
      type: object
      properties:
        tenant_id:
          type: string
        service_url:
          type: string
        conversation_id:
          type: string
      required:
      - tenant_id
      - service_url
      - conversation_id
    SendToSlackChannel:
      title: SendToSlackChannel
      type: object
      properties:
        access_token:
          type: string
        channel:
          type: string
      required:
      - access_token
      - channel
    Routing:
      title: Routing
      type: object
      description: Customize which channels/providers Courier may deliver the message through.
      properties:
        method:
          $ref: '#/components/schemas/RoutingMethod'
        channels:
          type: array
          items:
            $ref: '#/components/schemas/MessageRoutingChannel'
          description: A list of channels or providers (or nested routing rules).
      required:
      - method
      - channels
    Delay:
      title: Delay
      type: object
      properties:
        duration:
          type: integer
          nullable: true
          description: The duration of the delay in milliseconds.
        until:
          type: string
          nullable: true
          description: ISO 8601 timestamp or opening_hours-like format.
        timezone:
          type: string
          nullable: true
          description: IANA timezone identifier (e.g., "America/Los_Angeles", "UTC"). Used when resolving opening hours expressions. Takes precedence over user profile timezone settings.
    UTM:
      title: UTM
      type: object
      properties:
        source:
          type: string
          nullable: true
        medium:
          type: string
          nullable: true
        campaign:
          type: string
          nullable: true
        term:
          type: string
          nullable: true
        content:
          type: string
          nullable: true
    ChannelSource:
      title: ChannelSource
      type: string
      enum:
      - subscription
      - list
      - recipient
    SlackRecipient:
      title: Slack Recipient
      description: Send via Slack (channel, email, or user_id)
      type: object
      properties:
        slack:
          $ref: '#/components/schemas/Slack'
      required:
      - slack
    MessageProviders:
      title: MessageProviders
      type: object
      additionalProperties:
        $ref: '#/components/schemas/MessageProvidersType'
    TextAlign:
      title: TextAlign
      type: string
      enum:
      - left
      - center
      - right
    MessagePreferences:
      title: MessagePreferences
      type: object
      properties:
        subscription_topic_id:
          type: string
          description: The subscription topic to apply to the message.
      required:
      - subscription_topic_id
    Content:
      title: Content
      oneOf:
      - $ref: '#/components/schemas/ElementalContentSugar'
      - $ref: '#/components/schemas/ElementalContent'
    ElementalContentSugar:
      title: ElementalContentSugar
      type: object
      description: Syntactic sugar to provide a fast shorthand for Courier Elemental Blocks.
      properties:
        title:
          type: string
          description: Title/subject displayed by supported channels.
        body:
          type: string
          description: The text content displayed in the notification.
      required:
      - title
      - body
    ElementalImageNode:
      title: ElementalImageNode
      type: object
      description: Used to embed an image into the notification.
      properties:
        src:
          type: string
          description: The source of the image.
        href:
          type: string
          nullable: true
          description: A URL to link to when the image is clicked.
        align:
          $ref: '#/components/schemas/IAlignment'
          nullable: true
          description: The alignment of the image.
        altText:
          type: string
          nullable: true
          description: Alternate text for the image.
        width:
          type: string
          nullable: true
          description: CSS width properties to apply to the image. For example, 50px
      required:
      - src
      allOf:
      - $ref: '#/components/schemas/ElementalBaseNode'
    ChannelPreference:
      title: ChannelPreference
      type: object
      properties:
        channel:
          $ref: '#/components/schemas/ChannelClassification'
      required:
      - channel
    SendToSlackUserId:
      title: SendToSlackUserId
      type: object
      properties:
        access_token:
          type: string
        user_id:
          type: string
      required:
      - access_token
      - user_id
    AudienceRecipient:
      title: Audience Recipient
      description: Send to all users in an audience
      type: object
      properties:
        audience_id:
          type: string
          description: A unique identifier associated with an Audience. A message will be sent to each user in the audience.
        data:
          $ref: '#/components/schemas/MessageData'
          nullable: true
        filters:
          type: array
          items:
            $ref: '#/components/schemas/AudienceFilter'
          nullable: true
      required:
      - audience_id
    Message:
      title: Message
      oneOf:
      - $ref: '#/components/schemas/ContentMessage'
    ChannelMetadata:
      title: ChannelMetadata
      type: object
      properties:
        utm:
          $ref: '#/components/schemas/UTM'
          nullable: true
    UserRecipientType:
      title: UserRecipientType
      type: object
      properties: {}
    MessageContext:
      title: MessageContext
      type: object
      properties:
        tenant_id:
          type: string
          nullable: true
          description: Tenant id used to load brand/default preferences/context.
    WebhookProfile:
      title: WebhookProfile
      type: object
      properties:
        url:
          type: string
          description: The URL to send the webhook request to.
        method:
          $ref: '#/components/schemas/WebhookMethod'
          nullable: true
          description: The HTTP method to use for the webhook request. Defaults to POST if not specified.
        headers:
          type: object
          additionalProperties:
            type: string
          nullable: true
          description: Custom headers to include in the webhook request.
        authentication:
          $ref: '#/components/schemas/WebhookAuthentication'
          nullable: true
          description: Authentication configuration for the webhook request.
        profile:
          $ref: '#/components/schemas/WebhookProfileType'
          nullable: true
          description: Specifies what profile information is included in the request payload. Defaults to 'limited' if not specified.
      required:
      - url
    Recipient:
      title: Recipient
      description: 'A single recipient of the message. Choose one of the following types based on how you want to identify the recipient: - **User**: Send to a specific user by user_id, email, or phone number - **Audience**: Send to all users in an audience - **List**: Send to all users in a list - **List Pattern**: Send to users in lists matching a pattern - **Slack**: Send via Slack (channel, email, or user_id) - **MS Teams**: Send via Microsoft Teams - **PagerDuty**: Send via PagerDuty - **Webhook**: Send via webhook'
      oneOf:
      - $ref: '#/components/schemas/UserRecipient'
      - $ref: '#/components/schemas/AudienceRecipient'
      - $ref: '#/components/schemas/ListRecipient'
      - $ref: '#/components/schemas/ListPatternRecipient'
      - $ref: '#/components/schemas/SlackRecipient'
      - $ref: '#/components/schemas/MsTeamsRecipient'
      - $ref: '#/components/schemas/PagerdutyRecipient'
      - $ref: '#/components/schemas/WebhookRecipient'
      discriminator:
        propertyName: _type
        mapping:
          user: '#/components/schemas/UserRecipient'
          audience: '#/components/schemas/AudienceRecipient'
          list: '#/components/schemas/ListRecipient'
          list_pattern: '#/components/schemas/ListPatternRecipient'
          slack: '#/components/schemas/SlackRecipient'
          ms_teams: '#/components/schemas/MsTeamsRecipient'
          pagerduty: '#/components/schemas/P

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# Full source: https://raw.githubusercontent.com/api-evangelist/courier/refs/heads/main/openapi/courier-send-api-openapi.yml