Vapi MCP Server

import { z } from 'zod'; export type ToolResponse = { content: Array<{ type: 'text'; text: string }>; }; export function createSuccessResponse(data: any): ToolResponse { return { content: [ { type: 'text' as const, text: typeof data === 'string' ? data : JSON.stringify(data), }, ], }; } export function createErrorResponse(error: any): ToolResponse { const errorMessage = error?.message || String(error); return { content: [ { type: 'text' as const, text: `Error: ${errorMessage}`, }, ], }; } export function createToolHandler<T>( handler: (params: T) => Promise<any> ): (params: T) => Promise<ToolResponse> { return async (params: T) => { try { const result = await handler(params); return createSuccessResponse(result); } catch (error) { return createErrorResponse(error); } }; } export function createParamsSchema<T>(schema: z.ZodType<T>): any { return { properties: { params: (schema as any).shape || {}, }, required: ['params'], }; } export function createIdParamSchema( paramName: string, description: string ): any { return { properties: { [paramName]: { type: 'string', description }, }, required: [paramName], }; } export const withErrorHandling = <T>( handler: () => Promise<T> ): Promise<ToolResponse> => { return handler() .then((result) => createSuccessResponse(result)) .catch((error) => createErrorResponse(error)); }; export const filterResponseWithSchema = <T>( data: any, schema: z.ZodType<T> ): T => { if (Array.isArray(data)) { return data.map((item) => schema.parse(item)) as unknown as T; } return schema.parse(data); }; export const withSchemaFiltering = <T>( handler: () => Promise<any>, schema: z.ZodType<T> ): Promise<ToolResponse> => { return handler() .then((result) => { const filtered = filterResponseWithSchema(result, schema); return createSuccessResponse(filtered); }) .catch((error) => createErrorResponse(error)); };