fix(core): enable numerical routing by default and set threshold fallback to 90

packages/core/src/config/config.test.ts

@@ -492,6 +492,43 @@ describe('Server Config (config.ts)', () => {
         expect(await config.getUserCaching()).toBeUndefined();
       });
     });
+
+    describe('getNumericalRoutingEnabled', () => {
+      it('should return true by default if there are no experiments', async () => {
+        const config = new Config(baseParams);
+        expect(await config.getNumericalRoutingEnabled()).toBe(true);
+      });
+
+      it('should return true if the remote flag is set to true', async () => {
+        const config = new Config({
+          ...baseParams,
+          experiments: {
+            flags: {
+              [ExperimentFlags.ENABLE_NUMERICAL_ROUTING]: {
+                boolValue: true,
+              },
+            },
+            experimentIds: [],
+          },
+        } as unknown as ConfigParameters);
+        expect(await config.getNumericalRoutingEnabled()).toBe(true);
+      });
+
+      it('should return false if the remote flag is explicitly set to false', async () => {
+        const config = new Config({
+          ...baseParams,
+          experiments: {
+            flags: {
+              [ExperimentFlags.ENABLE_NUMERICAL_ROUTING]: {
+                boolValue: false,
+              },
+            },
+            experimentIds: [],
+          },
+        } as unknown as ConfigParameters);
+        expect(await config.getNumericalRoutingEnabled()).toBe(false);
+      });
+    });
   });
 
   describe('refreshAuth', () => {

packages/core/src/config/config.ts

@@ -2508,8 +2508,12 @@ export class Config implements McpContext, AgentLoopContext {
   async getNumericalRoutingEnabled(): Promise<boolean> {
     await this.ensureExperimentsLoaded();
 
-    return !!this.experiments?.flags[ExperimentFlags.ENABLE_NUMERICAL_ROUTING]
-      ?.boolValue;
+    const flag =
+      this.experiments?.flags[ExperimentFlags.ENABLE_NUMERICAL_ROUTING];
+    if (flag?.boolValue !== undefined) {
+      return flag.boolValue;
+    }
+    return true;
   }
 
   async getClassifierThreshold(): Promise<number | undefined> {