feat(AssetsController): add offhours to token rwa data types

packages/assets-controllers/CHANGELOG.md

@@ -9,6 +9,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- Add `offhours` field to `TokenRwaData` and `RwaTokenData` types to support off-hours RWA trading windows ([#9792](https://github.com/MetaMask/core/pull/9792))
+  - `offhours.nextOpen`: ISO-8601 datetime when the next off-hours window opens
+  - `offhours.nextClose`: ISO-8601 datetime when the next off-hours window closes
+  - Field is only present when the asset's source reports off-hours tradability; absence means off-hours trading is not supported
 - Add 0G (`16661`/`0x4115`) entries in `multicall.ts` and `codefi-v2.ts` ([#9760](https://github.com/MetaMask/core/pull/9760))
 
 ### Changed

packages/assets-controllers/src/token-service.test.ts

@@ -2003,6 +2003,47 @@ describe('Token service', () => {
       expect(result).toStrictEqual(sampleRwasResponse);
     });
 
+    it('passes through offhours field when present in the response', async () => {
+      const responseWithOffhours = {
+        ...sampleRwasResponse,
+        data: [
+          {
+            ...sampleRwasResponse.data[0],
+            rwaData: {
+              ...sampleRwasResponse.data[0].rwaData,
+              offhours: {
+                nextOpen: '2026-08-08T00:05:00Z',
+                nextClose: '2026-08-09T23:55:00Z',
+              },
+            },
+          },
+        ],
+      };
+
+      nock(TOKEN_END_POINT_API)
+        .get('/v1/rwas?limit=100')
+        .reply(200, responseWithOffhours)
+        .persist();
+
+      const result = await fetchRwas();
+
+      expect(result.data[0].rwaData.offhours).toStrictEqual({
+        nextOpen: '2026-08-08T00:05:00Z',
+        nextClose: '2026-08-09T23:55:00Z',
+      });
+    });
+
+    it('returns rwaData without offhours field when asset does not support off-hours trading', async () => {
+      nock(TOKEN_END_POINT_API)
+        .get('/v1/rwas?limit=100')
+        .reply(200, sampleRwasResponse)
+        .persist();
+
+      const result = await fetchRwas();
+
+      expect(result.data[0].rwaData.offhours).toBeUndefined();
+    });
+
     it('throws if the fetch fails', async () => {
       nock(TOKEN_END_POINT_API).get('/v1/rwas?limit=100').reply(500);
 

packages/assets-controllers/src/token-service.ts

@@ -380,6 +380,10 @@ export type TokenRwaData = {
     start?: string;
     end?: string;
   };
+  offhours?: {
+    nextOpen?: string;
+    nextClose?: string;
+  };
   ticker?: string;
   instrumentType?: string;
 };
@@ -401,6 +405,10 @@ export type RwaTokenData = {
   industry: string[];
   market?: RwaMarket;
   nextPause?: Record<string, unknown>;
+  offhours?: {
+    nextOpen?: string;
+    nextClose?: string;
+  };
   sharesOutstanding?: number;
   restrictedCountries?: string[];
   updatedAt?: string;