Vapi Squad Outbound Call

arazzo: 1.0.1
info:
  title: Vapi Squad Outbound Call
  summary: Build a two-assistant squad, place an outbound call to it, and poll until the call ends.
  description: >-
    The orchestrated outbound flow. It creates two assistants, assembles them
    into a squad, provisions a Vapi phone number, places an outbound call routed
    through the squad, and polls the call until it reaches a terminal status.
    Every step spells out its request inline so the flow can be read and executed
    without opening the underlying OpenAPI description.
  version: 1.0.0
sourceDescriptions:
- name: assistantsApi
  url: ../openapi/vapi-assistants-api-openapi.yml
  type: openapi
- name: squadsApi
  url: ../openapi/vapi-squads-api-openapi.yml
  type: openapi
- name: phoneNumbersApi
  url: ../openapi/vapi-phone-numbers-api-openapi.yml
  type: openapi
- name: callsApi
  url: ../openapi/vapi-calls-api-openapi.yml
  type: openapi
workflows:
- workflowId: squad-outbound-call
  summary: Stand up a squad, get a number, dial a customer through the squad, and watch it.
  description: >-
    Creates two assistants and a squad, provisions a Vapi number, places an
    outbound call to a customer through the squad, then polls the call to a
    terminal state.
  inputs:
    type: object
    required:
    - apiToken
    - greeterPrompt
    - specialistPrompt
    - customerNumber
    properties:
      apiToken:
        type: string
        description: Vapi private API key used as a Bearer token.
      greeterPrompt:
        type: string
        description: The system prompt for the greeter assistant.
      specialistPrompt:
        type: string
        description: The system prompt for the specialist assistant.
      customerNumber:
        type: string
        description: The destination phone number in E.164 format to dial.
      areaCode:
        type: string
        description: Desired North American area code for the new Vapi number.
        default: "415"
  steps:
  - stepId: createGreeter
    description: Create the greeter assistant that answers the call first.
    operationId: AssistantController_create
    parameters:
    - name: Authorization
      in: header
      value: Bearer $inputs.apiToken
    requestBody:
      contentType: application/json
      payload:
        name: Greeter
        firstMessage: Hello, thanks for taking our call.
        model:
          provider: openai
          model: gpt-5.4
          messages:
          - role: system
            content: $inputs.greeterPrompt
        voice:
          provider: azure
          voiceId: andrew
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      greeterId: $response.body#/id
  - stepId: createSpecialist
    description: Create the specialist assistant the greeter can hand the call to.
    operationId: AssistantController_create
    parameters:
    - name: Authorization
      in: header
      value: Bearer $inputs.apiToken
    requestBody:
      contentType: application/json
      payload:
        name: Specialist
        firstMessage: Let me help you with the specifics.
        model:
          provider: openai
          model: gpt-5.4
          messages:
          - role: system
            content: $inputs.specialistPrompt
        voice:
          provider: azure
          voiceId: andrew
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      specialistId: $response.body#/id
  - stepId: createSquad
    description: Assemble both assistants into a squad to handle the call.
    operationId: SquadController_create
    parameters:
    - name: Authorization
      in: header
      value: Bearer $inputs.apiToken
    requestBody:
      contentType: application/json
      payload:
        name: Outbound Squad
        members:
        - assistantId: $steps.createGreeter.outputs.greeterId
        - assistantId: $steps.createSpecialist.outputs.specialistId
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      squadId: $response.body#/id
  - stepId: provisionNumber
    description: Provision a free Vapi-managed phone number to place the call from.
    operationId: PhoneNumberController_create
    parameters:
    - name: Authorization
      in: header
      value: Bearer $inputs.apiToken
    requestBody:
      contentType: application/json
      payload:
        provider: vapi
        numberDesiredAreaCode: $inputs.areaCode
        name: Outbound Squad Number
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      phoneNumberId: $response.body#/id
  - stepId: createCall
    description: Place an outbound call to the customer routed through the squad.
    operationId: CallController_create
    parameters:
    - name: Authorization
      in: header
      value: Bearer $inputs.apiToken
    requestBody:
      contentType: application/json
      payload:
        name: Squad Outbound Call
        squadId: $steps.createSquad.outputs.squadId
        phoneNumberId: $steps.provisionNumber.outputs.phoneNumberId
        customer:
          number: $inputs.customerNumber
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      callId: $response.body#/id
      callStatus: $response.body#/status
  - stepId: pollCall
    description: >-
      Read the call status and branch: loop while still active, finish once it
      reaches the ended terminal state.
    operationId: CallController_findOne
    parameters:
    - name: Authorization
      in: header
      value: Bearer $inputs.apiToken
    - name: id
      in: path
      value: $steps.createCall.outputs.callId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      callStatus: $response.body#/status
      endedReason: $response.body#/endedReason
    onSuccess:
    - name: callEnded
      type: end
      criteria:
      - context: $response.body
        condition: $.status == 'ended'
        type: jsonpath
    - name: stillActive
      type: goto
      stepId: pollCall
      criteria:
      - context: $response.body
        condition: $.status != 'ended'
        type: jsonpath
  outputs:
    squadId: $steps.createSquad.outputs.squadId
    phoneNumberId: $steps.provisionNumber.outputs.phoneNumberId
    callId: $steps.createCall.outputs.callId
    callStatus: $steps.pollCall.outputs.callStatus
    endedReason: $steps.pollCall.outputs.endedReason