Connect Vapi to OpenAI on Stepper to automate your workflows. See the triggers and actions available for each app below.
When this happens in Vapi
New Call
Triggers when a new call is created or started.
New Assistant
Triggers when a new assistant is created. Polls the assistants endpoint for new entries.
Do this in OpenAI
Create Assistant
Creates a new voice AI assistant with configured transcriber, LLM model, and voice synthesis settings.
Update Assistant
Updates an existing assistant's configuration including name, messages, model, voice, or tools.
Create Outbound Call
Creates a new outbound phone call or web call using a specified assistant.
Create Phone Number
Creates or imports a phone number for use with Vapi. Supports Vapi-provided numbers or bring-your-own from Twilio.
Upload File
Uploads a file to Vapi for use with assistants (e.g., knowledge bases, audio files).
Find Assistant
Retrieves a specific assistant by ID with full configuration details.
Find Call
Retrieves a specific call by ID with complete details including transcript, recording, and cost breakdown.
Make HTTP Request
Make an HTTP request to any URL with full control over method, headers, and body.