Twitch Helix API — EventSub

naftiko: 1.0.0-alpha2
info:
  label: Twitch Helix API — EventSub
  description: 'Twitch Helix API — EventSub. 3 operations. Lead operation: Twitch Get EventSub Subscriptions. Self-contained
    Naftiko capability covering one Twitch business surface.'
  tags:
  - Twitch
  - EventSub
  created: '2026-05-19'
  modified: '2026-05-19'
binds:
- namespace: env
  keys:
    TWITCH_API_KEY: TWITCH_API_KEY
capability:
  consumes:
  - type: http
    namespace: helix-eventsub
    baseUri: https://api.twitch.tv/helix
    description: Twitch Helix API — EventSub business capability. Self-contained, no shared references.
    resources:
    - name: eventsub-subscriptions
      path: /eventsub/subscriptions
      operations:
      - name: geteventsubsubscriptions
        method: GET
        description: Twitch Get EventSub Subscriptions
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: status
          in: query
          type: string
        - name: type
          in: query
          type: string
        - name: user_id
          in: query
          type: string
      - name: createeventsubsubscription
        method: POST
        description: Twitch Create EventSub Subscription
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: body
          in: body
          type: object
          description: Request body (JSON).
          required: true
      - name: deleteeventsubsubscription
        method: DELETE
        description: Twitch Delete EventSub Subscription
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: id
          in: query
          type: string
          required: true
    authentication:
      type: bearer
      token: '{{env.TWITCH_API_KEY}}'
  exposes:
  - type: rest
    namespace: helix-eventsub-rest
    port: 8080
    description: REST adapter for Twitch Helix API — EventSub. One Spectral-compliant resource per consumed operation, prefixed
      with /v1.
    resources:
    - path: /v1/eventsub/subscriptions
      name: eventsub-subscriptions
      description: REST surface for eventsub-subscriptions.
      operations:
      - method: GET
        name: geteventsubsubscriptions
        description: Twitch Get EventSub Subscriptions
        call: helix-eventsub.geteventsubsubscriptions
        with:
          status: rest.status
          type: rest.type
          user_id: rest.user_id
        outputParameters:
        - type: object
          mapping: $.
      - method: POST
        name: createeventsubsubscription
        description: Twitch Create EventSub Subscription
        call: helix-eventsub.createeventsubsubscription
        with:
          body: rest.body
        outputParameters:
        - type: object
          mapping: $.
      - method: DELETE
        name: deleteeventsubsubscription
        description: Twitch Delete EventSub Subscription
        call: helix-eventsub.deleteeventsubsubscription
        with:
          id: rest.id
        outputParameters:
        - type: object
          mapping: $.
  - type: mcp
    namespace: helix-eventsub-mcp
    port: 9090
    transport: http
    description: MCP adapter for Twitch Helix API — EventSub. One tool per consumed operation, routed inline through this
      capability's consumes block.
    tools:
    - name: twitch-get-eventsub-subscriptions
      description: Twitch Get EventSub Subscriptions
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: helix-eventsub.geteventsubsubscriptions
      with:
        status: tools.status
        type: tools.type
        user_id: tools.user_id
      outputParameters:
      - type: object
        mapping: $.
    - name: twitch-create-eventsub-subscription
      description: Twitch Create EventSub Subscription
      hints:
        readOnly: false
        destructive: false
        idempotent: false
      call: helix-eventsub.createeventsubsubscription
      with:
        body: tools.body
      outputParameters:
      - type: object
        mapping: $.
    - name: twitch-delete-eventsub-subscription
      description: Twitch Delete EventSub Subscription
      hints:
        readOnly: false
        destructive: true
        idempotent: true
      call: helix-eventsub.deleteeventsubsubscription
      with:
        id: tools.id
      outputParameters:
      - type: object
        mapping: $.