Add dfx info mcp tool

mcp_server/src/index.ts

@@ -3,6 +3,7 @@ import { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'
 import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js'
 import { registerGetMotokoContext } from './tools/get-motoko-context.tool.js'
 import { registerGenerateMotokoCode } from './tools/generate-motoko-code.tool.js'
+import { registerDfxInfo } from './tools/dfx-info.tool.js'
 
 const PACKAGE_NAME = 'icp-coder-mcp-server'
 const VERSION = '0.1.1'
@@ -25,6 +26,7 @@ async function start(options: StartOptions = {}) {
   const server = new McpServer({ name: PACKAGE_NAME, version: VERSION })
   registerGetMotokoContext(server, { apiKey, baseUrl: backendBaseUrl })
   registerGenerateMotokoCode(server, { apiKey, baseUrl: backendBaseUrl })
+  registerDfxInfo(server)
   const transport = new StdioServerTransport()
   console.error(`[${PACKAGE_NAME}] starting MCP server (v${VERSION}) on stdio...`)
   await server.connect(transport)

mcp_server/src/tools/dfx-info.tool.ts

@@ -0,0 +1,52 @@
+import { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js';
+import { z } from 'zod';
+import { exec } from 'node:child_process';
+import { promisify } from 'node:util';
+
+const execAsync = promisify(exec);
+
+const DfxInfoArgsSchema = z.object({});
+
+type DfxInfoArgs = z.infer<typeof DfxInfoArgsSchema>;
+
+export function registerDfxInfo(server: McpServer) {
+	server.registerTool(
+		'dfx_info',
+		{
+			title: 'Get DFX Project Info',
+			description:
+				'Runs "dfx info" to get information about the current dfx project',
+			inputSchema: DfxInfoArgsSchema.shape,
+		},
+		async (_args: DfxInfoArgs) => {
+			try {
+				const { stdout, stderr } = await execAsync('dfx info');
+
+				return {
+					content: [
+						{
+							type: 'text' as const,
+							text: 'DFX Info retrieved successfully.',
+						},
+						{
+							type: 'text' as const,
+							text: `Output:\n${stdout}`,
+						},
+						...(stderr
+							? [
+									{
+										type: 'text' as const,
+										text: `Warnings/Errors:\n${stderr}`,
+									},
+							  ]
+							: []),
+					],
+				};
+			} catch (error) {
+				const message =
+					error instanceof Error ? error.message : String(error);
+				throw new Error(`Failed to run dfx info: ${message}`);
+			}
+		},
+	);
+}