✨ feat: Add Normalization for MCP Server Names (#7421)

packages/mcp/src/utils.ts

@@ -0,0 +1,30 @@
+/**
+ * Normalizes a server name to match the pattern ^[a-zA-Z0-9_.-]+$
+ * This is required for Azure OpenAI models with Tool Calling
+ */
+export function normalizeServerName(serverName: string): string {
+  // Check if the server name already matches the pattern
+  if (/^[a-zA-Z0-9_.-]+$/.test(serverName)) {
+    return serverName;
+  }
+
+  /** Replace non-matching characters with underscores.
+    This preserves the general structure while ensuring compatibility. 
+    Trims leading/trailing underscores
+    */
+  const normalized = serverName.replace(/[^a-zA-Z0-9_.-]/g, '_').replace(/^_+|_+$/g, '');
+
+  // If the result is empty (e.g., all characters were non-ASCII and got trimmed),
+  // generate a fallback name to ensure we always have a valid function name
+  if (!normalized) {
+    /** Hash of the original name to ensure uniqueness */
+    let hash = 0;
+    for (let i = 0; i < serverName.length; i++) {
+      hash = (hash << 5) - hash + serverName.charCodeAt(i);
+      hash |= 0; // Convert to 32bit integer
+    }
+    return `server_${Math.abs(hash)}`;
+  }
+
+  return normalized;
+}