improvement(extesnsions): handle legacy multimodel MCP diagnostics Merge pull request #67 from artemrootman/fix/mcp-diagnostics-runtime-fallback

Merge pull request #67 from artemrootman/fix/mcp-diagnostics-runtime-fallback

README.md

@@ -26,8 +26,7 @@
   <sub>Free desktop app for AI agent teams. Auto-detects Claude/Codex. Use the provider access you already have - subscriptions or API keys. Not just coding agents.</sub>
 </p>
 
-<img width="1500" height="1065" alt="demo" src="https://github.com/user-attachments/assets/9d502887-7e28-4a11-aedd-3bd45fdfb0d2" />
+<img width="1304" height="820" alt="image" src="https://github.com/user-attachments/assets/dea53a01-68b3-4c36-bcf6-e4d1ad4cdb31" />
-
 
 <table>
 <tr>

src/main/services/extensions/runtime/ExtensionsRuntimeAdapter.ts

@@ -61,6 +61,8 @@ export class ClaudeExtensionsAdapter implements ExtensionsRuntimeAdapter {
 export class MultimodelExtensionsAdapter implements ExtensionsRuntimeAdapter {
   readonly flavor = 'agent_teams_orchestrator' as const;
 
+  constructor(private readonly stateReader = new McpConfigStateReader()) {}
+
   async buildManagementCliEnv(binaryPath: string): Promise<NodeJS.ProcessEnv> {
     return buildManagementCliEnvForBinary(binaryPath);
   }
@@ -72,13 +74,21 @@ export class MultimodelExtensionsAdapter implements ExtensionsRuntimeAdapter {
     }
 
     const env = await this.buildManagementCliEnv(binaryPath);
-    const { stdout } = await execCli(binaryPath, ['mcp', 'list', '--json'], {
+    try {
-      timeout: MCP_LIST_TIMEOUT_MS,
+      const { stdout } = await execCli(binaryPath, ['mcp', 'list', '--json'], {
-      cwd: projectPath,
+        timeout: MCP_LIST_TIMEOUT_MS,
-      env,
+        cwd: projectPath,
-    });
+        env,
+      });
 
-    return parseInstalledMcpJsonOutput(stdout);
+      return parseInstalledMcpJsonOutput(stdout);
+    } catch (error) {
+      if (!isUnsupportedMcpJsonContractError(error)) {
+        throw error;
+      }
+
+      return this.stateReader.readInstalled(projectPath);
+    }
   }
 
   async diagnoseMcp(projectPath?: string): Promise<McpServerDiagnostic[]> {
@@ -88,16 +98,44 @@ export class MultimodelExtensionsAdapter implements ExtensionsRuntimeAdapter {
     }
 
     const env = await this.buildManagementCliEnv(binaryPath);
-    const { stdout } = await execCli(binaryPath, ['mcp', 'diagnose', '--json'], {
+    try {
-      timeout: MCP_DIAGNOSE_TIMEOUT_MS,
+      const { stdout } = await execCli(binaryPath, ['mcp', 'diagnose', '--json'], {
-      cwd: projectPath,
+        timeout: MCP_DIAGNOSE_TIMEOUT_MS,
-      env,
+        cwd: projectPath,
-    });
+        env,
+      });
 
-    return parseMcpDiagnosticsJsonOutput(stdout);
+      return parseMcpDiagnosticsJsonOutput(stdout);
+    } catch (error) {
+      if (!isUnsupportedMcpJsonContractError(error)) {
+        throw error;
+      }
+
+      const { stdout, stderr } = await execCli(binaryPath, ['mcp', 'list'], {
+        timeout: MCP_DIAGNOSE_TIMEOUT_MS,
+        cwd: projectPath,
+        env,
+      });
+
+      return parseMcpDiagnosticsOutput([stdout, stderr].filter(Boolean).join('\n'));
+    }
   }
 }
 
+function isUnsupportedMcpJsonContractError(error: unknown): boolean {
+  const message = error instanceof Error ? error.message : String(error);
+  const normalized = message.toLowerCase();
+
+  return (
+    normalized.includes("unknown command 'diagnose'") ||
+    normalized.includes('unknown command "diagnose"') ||
+    normalized.includes('unknown option') ||
+    normalized.includes('unknown argument') ||
+    normalized.includes('unexpected argument') ||
+    normalized.includes('unrecognized option')
+  );
+}
+
 class RuntimeSwitchingExtensionsAdapter implements ExtensionsRuntimeAdapter {
   constructor(
     private readonly claudeAdapter: ClaudeExtensionsAdapter,