create_label

Instructions

Implementation Reference

• src/tools/labels.ts:20-38 (registration)

  The tool is registered with the MCP server under the name 'create_label'.

  server.registerTool(
    "create_label",
    {
      description: "Create a new label/tag for organizing WhatsApp chats",
      inputSchema: {
        sessionId: z.string().describe("Session ID"),
        name: z.string().describe("Label name"),
        color: z.string().optional().describe("Label color hex code"),
      },
    },
    async ({ sessionId, name, color }) => {
      const data = await openwaClient({
        method: "POST",
        path: `/sessions/${sessionId}/labels`,
        body: { name, color },
      });
      return { content: [{ type: "text" as const, text: JSON.stringify(data, null, 2) }] };
    }
  );

• src/tools/labels.ts:30-38 (handler)

  The handler function that executes the 'create_label' tool logic: sends a POST request to the OpenWA API to create a new label with sessionId, name, and optional color.

    async ({ sessionId, name, color }) => {
      const data = await openwaClient({
        method: "POST",
        path: `/sessions/${sessionId}/labels`,
        body: { name, color },
      });
      return { content: [{ type: "text" as const, text: JSON.stringify(data, null, 2) }] };
    }
  );

• src/tools/labels.ts:22-29 (schema)

  Input schema for 'create_label' requiring sessionId (string), name (string), and optional color (hex string).

  {
    description: "Create a new label/tag for organizing WhatsApp chats",
    inputSchema: {
      sessionId: z.string().describe("Session ID"),
      name: z.string().describe("Label name"),
      color: z.string().optional().describe("Label color hex code"),
    },
  },

• src/client.ts:10-35 (helper)

  Helper function used by the handler to make HTTP requests to the OpenWA API backend.

  export async function openwaClient<T = unknown>(opts: RequestOptions): Promise<T> {
    const url = `${BASE_URL}${opts.path}`;
  
    const headers: Record<string, string> = {
      "Content-Type": "application/json",
      "X-API-Key": API_KEY,
    };
  
    const res = await fetch(url, {
      method: opts.method,
      headers,
      body: opts.body ? JSON.stringify(opts.body) : undefined,
    });
  
    const text = await res.text();
  
    if (!res.ok) {
      throw new Error(`OpenWA API ${res.status}: ${text}`);
    }
  
    try {
      return JSON.parse(text) as T;
    } catch {
      return text as T;
    }
  }

• src/index.ts:10-21 (registration)

  The label tool registration function is imported and invoked in the main entry point.

  import { registerLabelTools } from "./tools/labels.js";
  import { registerMediaTools } from "./tools/media.js";
  
  const server = new McpServer({ name: "openwa-mcp", version: "1.0.0" });
  
  registerSessionTools(server);
  registerMessageTools(server);
  registerBulkTools(server);
  registerGroupTools(server);
  registerContactTools(server);
  registerWebhookTools(server);
  registerLabelTools(server);