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Vapi MCP Server

Name: Vapi
Availability: InStock
Author: Vinkius

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Command Voice AI assistants directly from your chat. Make outbound phone calls, update personas, and retrieve full transcripts via Vapi.

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What is the Vapi MCP Server?

The Vapi MCP Server gives AI agents like Claude, ChatGPT, and Cursor direct access to Vapi via 10 tools. Command Voice AI assistants directly from your chat. Make outbound phone calls, update personas, and retrieve full transcripts via Vapi. Powered by the Vinkius - no API keys, no infrastructure, connect in under 2 minutes.

Built-in capabilities (10)

create_assistantcreate_phone_callcreate_web_callget_call_detailslist_agent_toolslist_assistantslist_callslist_phone_numberslist_squadsupdate_assistant

Tools for your AI Agents to operate Vapi

Ask your AI agent "List all our configured Voice assistants and their IDs." and get the answer without opening a single dashboard. With 10 tools connected to real Vapi data, your agents reason over live information, cross-reference it with other MCP servers, and deliver insights you would spend hours assembling manually.

Works with Claude, ChatGPT, Cursor, and any MCP-compatible client. Powered by the Vinkius - your credentials never touch the AI model, every request is auditable. Connect in under two minutes.

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Vapi MCP Server capabilities

10 tools

create_assistant

Provide configuration for transcriber, model, and voice as a JSON string. Create a new Voice AI assistant persona

create_phone_call

Provide the phone number ID and customer details. Start a new outbound phone call via Vapi

create_web_call

Returns a web call configuration. Generate a new web-based voice call link

get_call_details

Retrieves details, transcripts, and metrics for a specific call

list_agent_tools

List all tools available to Vapi assistants

list_assistants

List all Voice AI assistants configured in Vapi

list_calls

List recent and active voice calls managed by Vapi

list_phone_numbers

List all phone numbers connected to Vapi

list_squads

List all multi-agent squads

update_assistant

Update an existing assistant configuration

What the Vapi MCP Server unlocks

Connect your Vapi account to any AI agent and bring the power of automated voice communication into your standard conversational workspace.

What you can do

Phone Calling — Send commands instructing the agent to place outbound human-like phone calls and establish web ringing connections through Vapi's PSTN/WebRTC capabilities.
Call Transcripts — Search through recent call logs, retrieve call details natively, and pull raw voice-to-text transcripts or conversation metrics.
Persona Engineering — Ask your chat agent to build new Vapi assistants, update their system prompts, change its specific model, or mutate Voice IDs on the fly.
Squad Routing — List available telephony numbers, tools, and multi-agent squads natively to configure advanced conversational pathways.

How it works

1. Subscribe to this server
2. Enter your Vapi Private API Key
3. Start initiating and tracking phone calls from Claude, Cursor, or any MCP-compatible client

Your AI agent becomes a robust telephony dispatch center.

Who is this for?

Sales Engineers — quickly tell the agent to place a demonstration outbound sales call to a prospect's number right from your editor.
Customer Support Teams — pull the exact voice transcript logic from an unhappy customer call to summarize action items instantaneously.
Voice AI Developers — tweak TTS voices, change LLM models, or rewrite system instructions for a new assistant iteratively without switching windows.
Operations Managers — rapidly audit active telephony numbers and connected toolsets across different Vapi environments.

Frequently asked questions about the Vapi MCP Server

Can the agent place an outbound phone call for me?

Yes! Through the createPhoneCallTool, you can ask your agent: Initiate a phone call to +15551234567 using our 'Sales Assistant' persona. It will format the payload correctly and instruct Vapi to dial the human using the specified AI persona.

How can I read the transcript of an old automated voice call?

Just tell your chat assistant: fetch the transcript details for call ID '3fbea5x...'. The getCallTool reaches into Vapi, extracts the raw audio-to-text transcript logs, and the assistant can even summarize the entire human-to-AI interaction for you.

Can I tweak system prompts or models sequentially in my chat editor?

Yes, especially if you're in an IDE like Cursor. You can iterate: Update Assistant 'Agent A' to use GPT-4o and set its prompt to 'Always be highly overly enthusiastic'. The agent will use the updateAssistantTool to reconfigure the live voice persona instantly.