feat(telemetry): Add context breakdown to API response event (#19699)

packages/core/src/tools/mcp-tool.ts

@@ -29,6 +29,16 @@ import type { MessageBus } from '../confirmation-bus/message-bus.js';
  */
 export const MCP_QUALIFIED_NAME_SEPARATOR = '__';
 
+/**
+ * Returns true if `name` matches the MCP qualified name format: "server__tool",
+ * i.e. exactly two non-empty parts separated by the MCP_QUALIFIED_NAME_SEPARATOR.
+ */
+export function isMcpToolName(name: string): boolean {
+  if (!name.includes(MCP_QUALIFIED_NAME_SEPARATOR)) return false;
+  const parts = name.split(MCP_QUALIFIED_NAME_SEPARATOR);
+  return parts.length === 2 && parts[0].length > 0 && parts[1].length > 0;
+}
+
 type ToolParams = Record<string, unknown>;
 
 // Discriminated union for MCP Content Blocks to ensure type safety.