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New Call

Triggers when a new call is created or started.

• 1 parameters
• Status

New Assistant

Triggers when a new assistant is created. Polls the assistants endpoint for new entries.

Create Assistant

Creates a new voice AI assistant with configured transcriber, LLM model, and voice synthesis settings.

• 10 parameters
• Name
• First Message
• Model Provider
• Model Name
• System Prompt
• Transcriber Provider
• Transcriber Model
• Voice Provider
• Voice ID
• Server URL

Update Assistant

Updates an existing assistant's configuration including name, messages, model, voice, or tools.

• 11 parameters
• Assistant
• Name
• First Message
• Model Provider
• Model Name
• System Prompt
• Transcriber Provider
• Transcriber Model
• Voice Provider
• Voice ID
• Server URL

Create Outbound Call

Creates a new outbound phone call or web call using a specified assistant.

• 5 parameters
• Assistant
• Phone Number
• Customer Phone Number
• Customer Name
• Call Name

Create Phone Number

Creates or imports a phone number for use with Vapi. Supports Vapi-provided numbers or bring-your-own from Twilio.

• 3 parameters
• Provider
• Assistant
• Name

Upload File

Uploads a file to Vapi for use with assistants (e.g., knowledge bases, audio files).

• 2 parameters
• File URL
• File Name

Find Assistant

Retrieves a specific assistant by ID with full configuration details.

• 1 parameters
• Assistant

Find Call

Retrieves a specific call by ID with complete details including transcript, recording, and cost breakdown.

• 1 parameters
• Call ID

Make HTTP Request

Make an HTTP request to any URL with full control over method, headers, and body.