Fix zero-argument prompt handling

src/mcp-handler.ts

@@ -149,7 +149,7 @@ export function initializeMcpServer(server: any, config: McpConfig = {}) {
     }
 
     // Register prompts to help users get started
-    server.prompt("web_search_help", "Get help with web search using Exa", {}, async () => {
+    server.prompt("web_search_help", "Get help with web search using Exa", async () => {
       return {
         messages: [
           {

tests/unit/mcp-handler.test.ts

@@ -1,4 +1,5 @@
 import { beforeEach, describe, expect, it, vi } from "vitest";
+import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
 import { initializeMcpServer } from "../../src/mcp-handler.js";
 import { FakeMcpServer } from "../helpers/fakeMcpServer.js";
 
@@ -44,6 +45,35 @@ describe("initializeMcpServer", () => {
     );
   });
 
+  it("accepts prompts/get for web_search_help when arguments are omitted", async () => {
+    const server = new McpServer({ name: "test-server", version: "1.0.0" });
+
+    initializeMcpServer(server);
+
+    const getPromptHandler = (server.server as any)._requestHandlers.get("prompts/get");
+    const result = await getPromptHandler(
+      {
+        method: "prompts/get",
+        params: {
+          name: "web_search_help",
+        },
+      },
+      { signal: new AbortController().signal },
+    );
+
+    expect(result).toMatchObject({
+      messages: [
+        {
+          role: "user",
+          content: {
+            type: "text",
+            text: expect.stringContaining("search the web"),
+          },
+        },
+      ],
+    });
+  });
+
   it("respects explicit tool selection and deprecated aliases", () => {
     const server = new FakeMcpServer();