asyncapi: 2.6.0
info:
  title: Twitch EventSub
  version: '1.0'
  description: >-
    EventSub is Twitch's event-driven subscription service for receiving
    real-time notifications about events on Twitch. Supports webhook,
    WebSocket, and conduit transport methods. Subscribe to events such as
    stream changes, channel updates, chat messages, subscriptions,
    follows, raids, bans, and more.
  contact:
    name: Twitch Developer Support
    url: https://dev.twitch.tv/support/
  termsOfService: https://www.twitch.tv/p/legal/terms-of-service/
  externalDocs:
    description: Twitch EventSub Documentation
    url: https://dev.twitch.tv/docs/eventsub
servers:
  webhook:
    url: '{callbackUrl}'
    protocol: https
    description: >-
      Webhook transport - Twitch sends HTTP POST notifications to your
      registered callback URL
    variables:
      callbackUrl:
        description: Your HTTPS callback endpoint
  websocket:
    url: wss://eventsub.wss.twitch.tv/ws
    protocol: wss
    description: >-
      WebSocket transport - Connect to receive events over a persistent
      WebSocket connection
defaultContentType: application/json
channels:
  channel.update:
    description: A broadcaster updates their channel properties.
    subscribe:
      operationId: onChannelUpdate
      summary: Channel Update
      message:
        $ref: '#/components/messages/ChannelUpdateEvent'
  channel.follow:
    description: A user follows the specified broadcaster.
    subscribe:
      operationId: onChannelFollow
      summary: Channel Follow
      message:
        $ref: '#/components/messages/ChannelFollowEvent'
  channel.subscribe:
    description: A user subscribes to the specified broadcaster.
    subscribe:
      operationId: onChannelSubscribe
      summary: Channel Subscribe
      message:
        $ref: '#/components/messages/ChannelSubscribeEvent'
  channel.subscription.end:
    description: A subscription to the specified broadcaster expires.
    subscribe:
      operationId: onChannelSubscriptionEnd
      summary: Channel Subscription End
      message:
        $ref: '#/components/messages/ChannelSubscriptionEndEvent'
  channel.subscription.gift:
    description: A user gifts a subscription to one or more viewers.
    subscribe:
      operationId: onChannelSubscriptionGift
      summary: Channel Subscription Gift
      message:
        $ref: '#/components/messages/ChannelSubscriptionGiftEvent'
  channel.subscription.message:
    description: A user sends a resubscription chat message.
    subscribe:
      operationId: onChannelSubscriptionMessage
      summary: Channel Subscription Message
      message:
        $ref: '#/components/messages/ChannelSubscriptionMessageEvent'
  channel.cheer:
    description: A user cheers Bits in the specified channel.
    subscribe:
      operationId: onChannelCheer
      summary: Channel Cheer
      message:
        $ref: '#/components/messages/ChannelCheerEvent'
  channel.raid:
    description: A broadcaster raids another broadcaster's channel.
    subscribe:
      operationId: onChannelRaid
      summary: Channel Raid
      message:
        $ref: '#/components/messages/ChannelRaidEvent'
  channel.ban:
    description: A viewer is banned or timed out from a channel.
    subscribe:
      operationId: onChannelBan
      summary: Channel Ban
      message:
        $ref: '#/components/messages/ChannelBanEvent'
  channel.unban:
    description: A viewer is unbanned from a channel.
    subscribe:
      operationId: onChannelUnban
      summary: Channel Unban
      message:
        $ref: '#/components/messages/ChannelUnbanEvent'
  channel.moderator.add:
    description: A moderator is added to a channel.
    subscribe:
      operationId: onChannelModeratorAdd
      summary: Channel Moderator Add
      message:
        $ref: '#/components/messages/ChannelModeratorAddEvent'
  channel.moderator.remove:
    description: A moderator is removed from a channel.
    subscribe:
      operationId: onChannelModeratorRemove
      summary: Channel Moderator Remove
      message:
        $ref: '#/components/messages/ChannelModeratorRemoveEvent'
  channel.channel_points_custom_reward.add:
    description: A custom channel points reward is added to a channel.
    subscribe:
      operationId: onChannelPointsCustomRewardAdd
      summary: Channel Points Custom Reward Add
      message:
        $ref: '#/components/messages/ChannelPointsCustomRewardEvent'
  channel.channel_points_custom_reward_redemption.add:
    description: A viewer redeems a custom channel points reward.
    subscribe:
      operationId: onChannelPointsRedemptionAdd
      summary: Channel Points Redemption Add
      message:
        $ref: '#/components/messages/ChannelPointsRedemptionEvent'
  channel.poll.begin:
    description: A poll begins on a channel.
    subscribe:
      operationId: onChannelPollBegin
      summary: Channel Poll Begin
      message:
        $ref: '#/components/messages/ChannelPollEvent'
  channel.poll.end:
    description: A poll ends on a channel.
    subscribe:
      operationId: onChannelPollEnd
      summary: Channel Poll End
      message:
        $ref: '#/components/messages/ChannelPollEvent'
  channel.prediction.begin:
    description: A prediction begins on a channel.
    subscribe:
      operationId: onChannelPredictionBegin
      summary: Channel Prediction Begin
      message:
        $ref: '#/components/messages/ChannelPredictionEvent'
  channel.prediction.end:
    description: A prediction ends on a channel.
    subscribe:
      operationId: onChannelPredictionEnd
      summary: Channel Prediction End
      message:
        $ref: '#/components/messages/ChannelPredictionEvent'
  channel.hype_train.begin:
    description: A Hype Train begins on a channel.
    subscribe:
      operationId: onHypeTrainBegin
      summary: Hype Train Begin
      message:
        $ref: '#/components/messages/HypeTrainEvent'
  channel.hype_train.progress:
    description: A Hype Train makes progress on a channel.
    subscribe:
      operationId: onHypeTrainProgress
      summary: Hype Train Progress
      message:
        $ref: '#/components/messages/HypeTrainEvent'
  channel.hype_train.end:
    description: A Hype Train ends on a channel.
    subscribe:
      operationId: onHypeTrainEnd
      summary: Hype Train End
      message:
        $ref: '#/components/messages/HypeTrainEndEvent'
  channel.charity_campaign.donate:
    description: A user donates to a charity campaign on a channel.
    subscribe:
      operationId: onCharityDonation
      summary: Charity Campaign Donate
      message:
        $ref: '#/components/messages/CharityDonationEvent'
  channel.goal.begin:
    description: A creator goal begins on a channel.
    subscribe:
      operationId: onGoalBegin
      summary: Goal Begin
      message:
        $ref: '#/components/messages/GoalEvent'
  channel.goal.progress:
    description: A creator goal makes progress.
    subscribe:
      operationId: onGoalProgress
      summary: Goal Progress
      message:
        $ref: '#/components/messages/GoalEvent'
  channel.goal.end:
    description: A creator goal ends on a channel.
    subscribe:
      operationId: onGoalEnd
      summary: Goal End
      message:
        $ref: '#/components/messages/GoalEvent'
  channel.chat.message:
    description: A chat message is sent in a channel.
    subscribe:
      operationId: onChatMessage
      summary: Chat Message
      message:
        $ref: '#/components/messages/ChatMessageEvent'
  channel.chat.notification:
    description: A chat notification is sent in a channel (sub, raid, etc.).
    subscribe:
      operationId: onChatNotification
      summary: Chat Notification
      message:
        $ref: '#/components/messages/ChatNotificationEvent'
  stream.online:
    description: The specified broadcaster starts a stream.
    subscribe:
      operationId: onStreamOnline
      summary: Stream Online
      message:
        $ref: '#/components/messages/StreamOnlineEvent'
  stream.offline:
    description: The specified broadcaster stops a stream.
    subscribe:
      operationId: onStreamOffline
      summary: Stream Offline
      message:
        $ref: '#/components/messages/StreamOfflineEvent'
  user.authorization.grant:
    description: A user's authorization is granted for an application.
    subscribe:
      operationId: onUserAuthorizationGrant
      summary: User Authorization Grant
      message:
        $ref: '#/components/messages/UserAuthorizationGrantEvent'
  user.authorization.revoke:
    description: A user's authorization is revoked for an application.
    subscribe:
      operationId: onUserAuthorizationRevoke
      summary: User Authorization Revoke
      message:
        $ref: '#/components/messages/UserAuthorizationRevokeEvent'
  user.update:
    description: A user updates their account.
    subscribe:
      operationId: onUserUpdate
      summary: User Update
      message:
        $ref: '#/components/messages/UserUpdateEvent'
  drop.entitlement.grant:
    description: A Drops entitlement is granted to a user.
    subscribe:
      operationId: onDropEntitlementGrant
      summary: Drop Entitlement Grant
      message:
        $ref: '#/components/messages/DropEntitlementGrantEvent'
components:
  messages:
    ChannelUpdateEvent:
      name: ChannelUpdateEvent
      title: Channel Update Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    ChannelFollowEvent:
      name: ChannelFollowEvent
      title: Channel Follow Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    ChannelSubscribeEvent:
      name: ChannelSubscribeEvent
      title: Channel Subscribe Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    ChannelSubscriptionEndEvent:
      name: ChannelSubscriptionEndEvent
      title: Channel Subscription End Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    ChannelSubscriptionGiftEvent:
      name: ChannelSubscriptionGiftEvent
      title: Channel Subscription Gift Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    ChannelSubscriptionMessageEvent:
      name: ChannelSubscriptionMessageEvent
      title: Channel Subscription Message Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    ChannelCheerEvent:
      name: ChannelCheerEvent
      title: Channel Cheer Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    ChannelRaidEvent:
      name: ChannelRaidEvent
      title: Channel Raid Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    ChannelBanEvent:
      name: ChannelBanEvent
      title: Channel Ban Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    ChannelUnbanEvent:
      name: ChannelUnbanEvent
      title: Channel Unban Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    ChannelModeratorAddEvent:
      name: ChannelModeratorAddEvent
      title: Channel Moderator Add Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    ChannelModeratorRemoveEvent:
      name: ChannelModeratorRemoveEvent
      title: Channel Moderator Remove Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    ChannelPointsCustomRewardEvent:
      name: ChannelPointsCustomRewardEvent
      title: Channel Points Custom Reward Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    ChannelPointsRedemptionEvent:
      name: ChannelPointsRedemptionEvent
      title: Channel Points Redemption Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    ChannelPollEvent:
      name: ChannelPollEvent
      title: Channel Poll Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    ChannelPredictionEvent:
      name: ChannelPredictionEvent
      title: Channel Prediction Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    HypeTrainEvent:
      name: HypeTrainEvent
      title: Hype Train Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    HypeTrainEndEvent:
      name: HypeTrainEndEvent
      title: Hype Train End Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    CharityDonationEvent:
      name: CharityDonationEvent
      title: Charity Donation Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    GoalEvent:
      name: GoalEvent
      title: Goal Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    ChatMessageEvent:
      name: ChatMessageEvent
      title: Chat Message Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    ChatNotificationEvent:
      name: ChatNotificationEvent
      title: Chat Notification Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    StreamOnlineEvent:
      name: StreamOnlineEvent
      title: Stream Online Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    StreamOfflineEvent:
      name: StreamOfflineEvent
      title: Stream Offline Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    UserAuthorizationGrantEvent:
      name: UserAuthorizationGrantEvent
      title: User Authorization Grant Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    UserAuthorizationRevokeEvent:
      name: UserAuthorizationRevokeEvent
      title: User Authorization Revoke Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    UserUpdateEvent:
      name: UserUpdateEvent
      title: User Update Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
    DropEntitlementGrantEvent:
      name: DropEntitlementGrantEvent
      title: Drop Entitlement Grant Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/EventSubNotification'
  schemas:
    EventSubNotification:
      type: object
      description: Standard EventSub notification envelope
      properties:
        subscription:
          type: object
          properties:
            id:
              type: string
              description: Unique subscription ID
            status:
              type: string
              description: Subscription status
            type:
              type: string
              description: The subscription event type
            version:
              type: string
              description: Version of the subscription type
            condition:
              type: object
              additionalProperties:
                type: string
              description: Conditions the subscription was created with
            transport:
              type: object
              properties:
                method:
                  type: string
                  enum: [webhook, websocket, conduit]
                callback:
                  type: string
            cost:
              type: integer
            created_at:
              type: string
              format: date-time
        event:
          type: object
          description: The event-specific payload (varies by subscription type)
          additionalProperties: true
    ChannelUpdatePayload:
      type: object
      properties:
        broadcaster_user_id:
          type: string
        broadcaster_user_login:
          type: string
        broadcaster_user_name:
          type: string
        title:
          type: string
        language:
          type: string
        category_id:
          type: string
        category_name:
          type: string
        content_classification_labels:
          type: array
          items:
            type: string
    ChannelFollowPayload:
      type: object
      properties:
        user_id:
          type: string
        user_login:
          type: string
        user_name:
          type: string
        broadcaster_user_id:
          type: string
        broadcaster_user_login:
          type: string
        broadcaster_user_name:
          type: string
        followed_at:
          type: string
          format: date-time
    ChannelSubscribePayload:
      type: object
      properties:
        user_id:
          type: string
        user_login:
          type: string
        user_name:
          type: string
        broadcaster_user_id:
          type: string
        broadcaster_user_login:
          type: string
        broadcaster_user_name:
          type: string
        tier:
          type: string
          enum: ['1000', '2000', '3000']
        is_gift:
          type: boolean
    ChannelCheerPayload:
      type: object
      properties:
        is_anonymous:
          type: boolean
        user_id:
          type: string
          nullable: true
        user_login:
          type: string
          nullable: true
        user_name:
          type: string
          nullable: true
        broadcaster_user_id:
          type: string
        broadcaster_user_login:
          type: string
        broadcaster_user_name:
          type: string
        message:
          type: string
        bits:
          type: integer
    ChannelRaidPayload:
      type: object
      properties:
        from_broadcaster_user_id:
          type: string
        from_broadcaster_user_login:
          type: string
        from_broadcaster_user_name:
          type: string
        to_broadcaster_user_id:
          type: string
        to_broadcaster_user_login:
          type: string
        to_broadcaster_user_name:
          type: string
        viewers:
          type: integer
    ChannelBanPayload:
      type: object
      properties:
        user_id:
          type: string
        user_login:
          type: string
        user_name:
          type: string
        broadcaster_user_id:
          type: string
        broadcaster_user_login:
          type: string
        broadcaster_user_name:
          type: string
        moderator_user_id:
          type: string
        moderator_user_login:
          type: string
        moderator_user_name:
          type: string
        reason:
          type: string
        banned_at:
          type: string
          format: date-time
        ends_at:
          type: string
          format: date-time
          nullable: true
        is_permanent:
          type: boolean
    StreamOnlinePayload:
      type: object
      properties:
        id:
          type: string
        broadcaster_user_id:
          type: string
        broadcaster_user_login:
          type: string
        broadcaster_user_name:
          type: string
        type:
          type: string
          enum: [live, playlist, watch_party, premiere, rerun]
        started_at:
          type: string
          format: date-time
    StreamOfflinePayload:
      type: object
      properties:
        broadcaster_user_id:
          type: string
        broadcaster_user_login:
          type: string
        broadcaster_user_name:
          type: string
    DropEntitlementGrantPayload:
      type: object
      properties:
        id:
          type: string
        data:
          type: array
          items:
            type: object
            properties:
              organization_id:
                type: string
              category_id:
                type: string
              category_name:
                type: string
              campaign_id:
                type: string
              user_id:
                type: string
              user_name:
                type: string
              user_login:
                type: string
              entitlement_id:
                type: string
              benefit_id:
                type: string
              created_at:
                type: string
                format: date-time
    WebSocketSessionMessage:
      type: object
      description: WebSocket session welcome message
      properties:
        metadata:
          type: object
          properties:
            message_id:
              type: string
            message_type:
              type: string
              enum: [session_welcome, session_keepalive, notification, session_reconnect, revocation]
            message_timestamp:
              type: string
              format: date-time
        payload:
          type: object
          properties:
            session:
              type: object
              properties:
                id:
                  type: string
                status:
                  type: string
                connected_at:
                  type: string
                  format: date-time
                keepalive_timeout_seconds:
                  type: integer
                reconnect_url:
                  type: string
                  nullable: true