MCP Client SDK Generator

Client SDK

The client reads your manifest from https://api.example.com/.well-known/mcp.json once, caches it, and calls each tool at its endpoint.

// Generated by Techorizone. WebMCP client for https://api.example.com
// Works in Node.js 18+ and modern browsers (uses fetch).
export interface McpTool {
  name: string;
  description: string;
  endpoint: string;
  method?: string;
  inputSchema?: Record<string, unknown>;
}

export interface McpManifest {
  name: string;
  description: string;
  version: string;
  tools: McpTool[];
}

export class MyWebMCPClient {
  private manifest: McpManifest | null = null;

  constructor(
    private baseUrl: string = "https://api.example.com",
    private headers: Record<string, string> = {},
  ) {}

  async getManifest(): Promise<McpManifest> {
    if (this.manifest) return this.manifest;
    const res = await fetch(`${this.baseUrl}/.well-known/mcp.json`, { headers: this.headers });
    if (!res.ok) throw new Error(`Manifest request failed: HTTP ${res.status}`);
    this.manifest = (await res.json()) as McpManifest;
    return this.manifest;
  }

  async listTools(): Promise<McpTool[]> {
    return (await this.getManifest()).tools;
  }

  async callTool<T = unknown>(name: string, args: Record<string, unknown> = {}): Promise<T> {
    const tool = (await this.listTools()).find((t) => t.name === name);
    if (!tool) throw new Error(`Unknown tool: ${name}`);
    let url = tool.endpoint.startsWith("http") ? tool.endpoint : `${this.baseUrl}${tool.endpoint}`;
    const method = (tool.method ?? "POST").toUpperCase();
    const init: RequestInit = { method, headers: { ...this.headers } };
    if (method === "GET") {
      const qs = new URLSearchParams(Object.entries(args).map(([k, v]) => [k, String(v)]));
      const query = qs.toString();
      if (query) url += (url.includes("?") ? "&" : "?") + query;
    } else {
      init.headers = { "Content-Type": "application/json", ...this.headers };
      init.body = JSON.stringify(args);
    }
    const res = await fetch(url, init);
    if (!res.ok) throw new Error(`Tool ${name} failed: HTTP ${res.status}`);
    return (await res.json()) as T;
  }
}