[MCP] Add a list_dataconnect_services MCP tool (#8485)

Author: fredzqm

src/mcp/tools/dataconnect/index.ts

@@ -0,0 +1,5 @@
+import type { ServerTool } from "../../tool.js";
+
+import { list_dataconnect_services } from "./list_dataconnect_services.js";
+
+export const dataconnectTools: ServerTool[] = [list_dataconnect_services];

src/mcp/tools/dataconnect/list_dataconnect_services.ts

@@ -0,0 +1,25 @@
+import { z } from "zod";
+import { tool } from "../../tool.js";
+import { toContent } from "../../util.js";
+import * as client from "../../../dataconnect/client";
+import { NO_PROJECT_ERROR } from "../../errors.js";
+
+export const list_dataconnect_services = tool(
+  {
+    name: "list_dataconnect_services",
+    description: "List the Firebase Data Connect services available in the current project.",
+    inputSchema: z.object({}),
+    annotations: {
+      title: "List the Firebase Data Connect Services that's available in the backend",
+      readOnlyHint: true,
+    },
+    _meta: {
+      requiresProject: true,
+    },
+  },
+  async (_, { projectId }) => {
+    if (!projectId) return NO_PROJECT_ERROR;
+    const services = await client.listAllServices(projectId);
+    return toContent(services, { format: "yaml" });
+  },
+);

src/mcp/tools/index.ts

@@ -1,13 +1,14 @@
 import { ServerTool } from "../tool.js";
 import { ServerFeature } from "../types.js";
 import { authTools } from "./auth/index.js";
+import { dataconnectTools } from "./dataconnect/index.js";
 import { firestoreTools } from "./firestore/index.js";
 import { projectTools } from "./project/index.js";
 
 export const tools: Record<ServerFeature, ServerTool[]> = {
   project: projectTools,
   firestore: firestoreTools,
   auth: authTools,
-  dataconnect: [],
+  dataconnect: dataconnectTools,
   storage: [],
 };