Vapi MCP Server

import { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'; import { VapiClient, Vapi } from '@vapi-ai/server-sdk'; import { CreateAssistantInputSchema, GetAssistantInputSchema, UpdateAssistantInputSchema, } from '../schemas/index.js'; import { transformAssistantInput, transformAssistantOutput, transformUpdateAssistantInput, } from '../transformers/index.js'; import { createToolHandler } from './utils.js'; export const registerAssistantTools = ( server: McpServer, vapiClient: VapiClient ) => { server.tool( 'list_assistants', 'Lists all Vapi assistants', {}, createToolHandler(async () => { // console.log('list_assistants'); const assistants = await vapiClient.assistants.list({ limit: 10 }); // console.log('assistants', assistants); return assistants.map(transformAssistantOutput); }) ); server.tool( 'create_assistant', 'Creates a new Vapi assistant', CreateAssistantInputSchema.shape, createToolHandler(async (data) => { // console.log('create_assistant', data); const createAssistantDto = transformAssistantInput(data); const assistant = await vapiClient.assistants.create(createAssistantDto); return transformAssistantOutput(assistant); }) ); server.tool( 'get_assistant', 'Gets a Vapi assistant by ID', GetAssistantInputSchema.shape, createToolHandler(async (data) => { // console.log('get_assistant', data); const assistantId = data.assistantId; try { const assistant = await vapiClient.assistants.get(assistantId); if (!assistant) { throw new Error(`Assistant with ID ${assistantId} not found`); } return transformAssistantOutput(assistant); } catch (error: any) { console.error(`Error getting assistant: ${error.message}`); throw error; } }) ); server.tool( 'update_assistant', 'Updates an existing Vapi assistant', UpdateAssistantInputSchema.shape, createToolHandler(async (data) => { const assistantId = data.assistantId; try { // First check if the assistant exists const existingAssistant = await vapiClient.assistants.get(assistantId); if (!existingAssistant) { throw new Error(`Assistant with ID ${assistantId} not found`); } // Transform the update data const updateAssistantDto = transformUpdateAssistantInput(data); // Update the assistant const updatedAssistant = await vapiClient.assistants.update( assistantId, updateAssistantDto ); return transformAssistantOutput(updatedAssistant); } catch (error: any) { console.error(`Error updating assistant: ${error.message}`); throw error; } }) ); };