diff --git a/packages/bridge-controller/CHANGELOG.md b/packages/bridge-controller/CHANGELOG.md
index 11b9470c708..271f1f096dd 100644
--- a/packages/bridge-controller/CHANGELOG.md
+++ b/packages/bridge-controller/CHANGELOG.md
@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Bump `@metamask/remote-feature-flag-controller` from `^4.0.0` to `^4.1.0` ([#8041](https://github.com/MetaMask/core/pull/8041))
 - Bump `@metamask/transaction-controller` from `^62.18.0` to `^62.19.0` ([#8031](https://github.com/MetaMask/core/pull/8031))
 - Bump `@metamask/assets-controllers` from `^100.0.2` to `^100.0.3` ([#8029](https://github.com/MetaMask/core/pull/8029))
+- Extend quote intent validation to accept optional EIP-712 `typedData` payloads ([#7895](https://github.com/MetaMask/core/pull/7895)).
 
 ## [67.2.0]
 
diff --git a/packages/bridge-controller/src/utils/validators.test.ts b/packages/bridge-controller/src/utils/validators.test.ts
index 06bfeab351e..da6ff91c0d2 100644
--- a/packages/bridge-controller/src/utils/validators.test.ts
+++ b/packages/bridge-controller/src/utils/validators.test.ts
@@ -1,4 +1,6 @@
-import { validateFeatureFlagsResponse } from './validators';
+import { is } from '@metamask/superstruct';
+
+import { validateFeatureFlagsResponse, IntentSchema } from './validators';
 
 describe('validators', () => {
   describe('validateFeatureFlagsResponse', () => {
@@ -280,9 +282,10 @@ describe('validators', () => {
           maxRefreshCount: 5,
           refreshRate: 30000,
           support: true,
-          minimumVersion: '0.0',
+          minimumVersion: '0.0.0',
           sse: {
             enabled: true,
+            minimumVersion: '0.0',
           },
         },
         type: 'sse config - malformed minimum version',
@@ -316,11 +319,129 @@ describe('validators', () => {
         type: 'all evm chains active + an extra field not specified in the schema',
         expected: true,
       },
-    ])(
-      'should return $expected if the response is valid: $type',
-      ({ response, expected }) => {
-        expect(validateFeatureFlagsResponse(response)).toBe(expected);
+    ])('should return $expected for: $type', ({ response, expected }) => {
+      expect(validateFeatureFlagsResponse(response)).toBe(expected);
+    });
+  });
+
+  describe('IntentSchema', () => {
+    const validOrder = {
+      sellToken: '0x0000000000000000000000000000000000000001',
+      buyToken: '0x0000000000000000000000000000000000000002',
+      validTo: 1717027200,
+      appData: 'some-app-data',
+      appDataHash: '0xabcd',
+      feeAmount: '100',
+      kind: 'sell' as const,
+      partiallyFillable: false,
+      sellAmount: '1000',
+    };
+
+    const validIntent = {
+      protocol: 'cowswap',
+      order: validOrder,
+      typedData: {
+        types: { Order: [{ name: 'sellToken', type: 'address' }] },
+        domain: { name: 'GPv2Settlement', chainId: 1 },
+        primaryType: 'Order',
+        message: { sellToken: '0x01', buyToken: '0x02' },
       },
-    );
+    };
+
+    it('accepts a valid intent with required fields only', () => {
+      expect(is(validIntent, IntentSchema)).toBe(true);
+    });
+
+    it('accepts intent with optional settlementContract', () => {
+      expect(
+        is(
+          {
+            ...validIntent,
+            settlementContract: '0x9008D19f58AAbd9eD0D60971565AA8510560ab41',
+          },
+          IntentSchema,
+        ),
+      ).toBe(true);
+    });
+
+    it('rejects intent without typedData', () => {
+      const { typedData: _, ...intentWithoutTypedData } = validIntent;
+      expect(is(intentWithoutTypedData, IntentSchema)).toBe(false);
+    });
+
+    it('rejects intent with typedData missing domain', () => {
+      expect(
+        is(
+          {
+            ...validIntent,
+            typedData: { types: {}, primaryType: 'Order', message: {} },
+          },
+          IntentSchema,
+        ),
+      ).toBe(false);
+    });
+
+    it('rejects intent with typedData missing message', () => {
+      expect(
+        is(
+          {
+            ...validIntent,
+            typedData: { types: {}, domain: {}, primaryType: 'Order' },
+          },
+          IntentSchema,
+        ),
+      ).toBe(false);
+    });
+
+    it('rejects intent with typedData missing types', () => {
+      expect(
+        is(
+          {
+            ...validIntent,
+            typedData: { domain: {}, primaryType: 'Order', message: {} },
+          },
+          IntentSchema,
+        ),
+      ).toBe(false);
+    });
+
+    it('rejects intent with typedData missing primaryType', () => {
+      expect(
+        is(
+          {
+            ...validIntent,
+            typedData: { types: {}, domain: {}, message: {} },
+          },
+          IntentSchema,
+        ),
+      ).toBe(false);
+    });
+
+    it('rejects intent without protocol', () => {
+      const { protocol: _, ...intentWithoutProtocol } = validIntent;
+      expect(is(intentWithoutProtocol, IntentSchema)).toBe(false);
+    });
+
+    it('rejects intent without order', () => {
+      const { order: _, ...intentWithoutOrder } = validIntent;
+      expect(is(intentWithoutOrder, IntentSchema)).toBe(false);
+    });
+
+    it('accepts intent with empty typedData records', () => {
+      expect(
+        is(
+          {
+            ...validIntent,
+            typedData: {
+              types: {},
+              domain: {},
+              primaryType: 'Order',
+              message: {},
+            },
+          },
+          IntentSchema,
+        ),
+      ).toBe(true);
+    });
   });
 });
diff --git a/packages/bridge-controller/src/utils/validators.ts b/packages/bridge-controller/src/utils/validators.ts
index ac6577aa45e..4750862c8e2 100644
--- a/packages/bridge-controller/src/utils/validators.ts
+++ b/packages/bridge-controller/src/utils/validators.ts
@@ -1,6 +1,7 @@
 import { isValidHexAddress } from '@metamask/controller-utils';
 import type { Infer } from '@metamask/superstruct';
 import {
+  any,
   string,
   boolean,
   number,
@@ -329,9 +330,26 @@ export const IntentSchema = type({
   settlementContract: optional(HexAddressSchema),
 
   /**
-   * Optional relayer address responsible for order submission.
+   * Optional EIP-712 typed data payload for signing.
+   * Must be JSON-serializable and include required EIP-712 fields.
    */
-  relayer: optional(HexAddressSchema),
+  typedData: type({
+    // Keep values as `any()` here. Using `unknown()` in this record causes
+    // TS2321/TS2589 (excessive type instantiation depth) in bridge state
+    // inference during build.
+    types: record(
+      string(),
+      array(
+        type({
+          name: string(),
+          type: string(),
+        }),
+      ),
+    ),
+    primaryType: string(),
+    domain: record(string(), any()),
+    message: record(string(), any()),
+  }),
 });
 
 export const QuoteSchema = type({
diff --git a/packages/bridge-status-controller/CHANGELOG.md b/packages/bridge-status-controller/CHANGELOG.md
index c35d44ff441..99c1d5eca1b 100644
--- a/packages/bridge-status-controller/CHANGELOG.md
+++ b/packages/bridge-status-controller/CHANGELOG.md
@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Bump `@metamask/bridge-controller` from `^67.1.1` to `^67.2.0` ([#8024](https://github.com/MetaMask/core/pull/8024))
 - Bump `@metamask/transaction-controller` from `^62.17.1` to `^62.19.0` ([#8005](https://github.com/MetaMask/core/pull/8005), [#8031](https://github.com/MetaMask/core/pull/8031))
+- **BREAKING:** Make `submitIntent` sign intent typed data internally when signature is not provided, keeping support for externally provided signatures ([#7895](https://github.com/MetaMask/core/pull/7895)).
 - Move `IntentApiImpl` instantation from `BridgeStatusController` to `IntentManager` ([#8015](https://github.com/MetaMask/core/pull/8015/))
 
 ## [67.0.1]
diff --git a/packages/bridge-status-controller/package.json b/packages/bridge-status-controller/package.json
index 93a3ccc800b..499d9fde8bd 100644
--- a/packages/bridge-status-controller/package.json
+++ b/packages/bridge-status-controller/package.json
@@ -52,6 +52,7 @@
     "@metamask/bridge-controller": "^67.2.0",
     "@metamask/controller-utils": "^11.19.0",
     "@metamask/gas-fee-controller": "^26.0.3",
+    "@metamask/keyring-controller": "^25.1.0",
     "@metamask/network-controller": "^30.0.0",
     "@metamask/polling-controller": "^16.0.3",
     "@metamask/profile-sync-controller": "^27.1.0",
diff --git a/packages/bridge-status-controller/src/bridge-status-controller.intent.test.ts b/packages/bridge-status-controller/src/bridge-status-controller.intent.test.ts
index f918bf4dafc..62939ead58d 100644
--- a/packages/bridge-status-controller/src/bridge-status-controller.intent.test.ts
+++ b/packages/bridge-status-controller/src/bridge-status-controller.intent.test.ts
@@ -69,6 +69,12 @@ const minimalIntentQuoteResponse = (overrides?: Partial<any>): any => {
         protocol: 'cowswap',
         order: { some: 'order' },
         settlementContract: '0x9008D19f58AAbd9eD0D60971565AA8510560ab41',
+        typedData: {
+          types: {},
+          domain: {},
+          primaryType: 'Order',
+          message: {},
+        },
       },
     },
     sentAmount: { amount: '1', usd: '1' },
@@ -169,6 +175,8 @@ const createMessengerHarness = (
           return undefined;
         case 'GasFeeController:getState':
           return { gasFeeEstimates: {} };
+        case 'KeyringController:signTypedMessage':
+          return '0xtest-signature';
         default:
           return undefined;
       }
@@ -401,7 +409,6 @@ describe('BridgeStatusController (intent swaps)', () => {
 
     const promise = controller.submitIntent({
       quoteResponse,
-      signature: '0xsig',
       accountAddress,
     });
     expect(await promise.catch((error: any) => error)).toStrictEqual(
@@ -448,7 +455,6 @@ describe('BridgeStatusController (intent swaps)', () => {
     await expect(
       controller.submitIntent({
         quoteResponse,
-        signature: '0xsig',
         accountAddress,
       }),
     ).resolves.toBeDefined();
@@ -482,7 +488,6 @@ describe('BridgeStatusController (intent swaps)', () => {
 
     const promise = controller.submitIntent({
       quoteResponse,
-      signature: '0xsig',
       accountAddress,
     });
     expect(await promise.catch((error: any) => error)).toStrictEqual(
@@ -522,7 +527,6 @@ describe('BridgeStatusController (intent swaps)', () => {
 
     const result = await controller.submitIntent({
       quoteResponse,
-      signature: '0xsig',
       accountAddress,
     });
 
@@ -535,6 +539,58 @@ describe('BridgeStatusController (intent swaps)', () => {
     consoleSpy.mockRestore();
   });
 
+  it('submitIntent: signs typedData', async () => {
+    const { controller, messenger, accountAddress, submitIntentMock } = setup();
+
+    const orderUid = 'order-uid-signed-in-core-1';
+    submitIntentMock.mockResolvedValue({
+      id: orderUid,
+      status: IntentOrderStatus.SUBMITTED,
+      txHash: undefined,
+      metadata: { txHashes: [] },
+    });
+
+    const quoteResponse = minimalIntentQuoteResponse();
+    quoteResponse.quote.intent.typedData = {
+      types: {},
+      primaryType: 'Order',
+      domain: {},
+      message: {},
+    };
+
+    const originalCallImpl = (
+      messenger.call as jest.Mock
+    ).getMockImplementation();
+    (messenger.call as jest.Mock).mockImplementation(
+      (method: string, ...args: any[]) => {
+        if (method === 'KeyringController:signTypedMessage') {
+          return '0xautosigned';
+        }
+        return originalCallImpl?.(method, ...args);
+      },
+    );
+
+    await controller.submitIntent({
+      quoteResponse,
+      accountAddress,
+    });
+
+    expect((messenger.call as jest.Mock).mock.calls).toStrictEqual(
+      expect.arrayContaining([
+        [
+          'KeyringController:signTypedMessage',
+          expect.objectContaining({
+            from: accountAddress,
+            data: quoteResponse.quote.intent.typedData,
+          }),
+          'V4',
+        ],
+      ]),
+    );
+
+    expect(submitIntentMock.mock.calls[0]?.[0]?.signature).toBe('0xautosigned');
+  });
+
   it('intent polling: updates history, merges tx hashes, updates TC tx, and stops polling on COMPLETED', async () => {
     const {
       controller,
@@ -557,7 +613,6 @@ describe('BridgeStatusController (intent swaps)', () => {
 
     await controller.submitIntent({
       quoteResponse,
-      signature: '0xsig',
       accountAddress,
     });
 
@@ -602,7 +657,6 @@ describe('BridgeStatusController (intent swaps)', () => {
 
     await controller.submitIntent({
       quoteResponse,
-      signature: '0xsig',
       accountAddress,
     });
 
@@ -649,7 +703,6 @@ describe('BridgeStatusController (intent swaps)', () => {
 
     await controller.submitIntent({
       quoteResponse,
-      signature: '0xsig',
       accountAddress,
     });
 
diff --git a/packages/bridge-status-controller/src/bridge-status-controller.ts b/packages/bridge-status-controller/src/bridge-status-controller.ts
index d84ff9cb3c5..c2076497d8d 100644
--- a/packages/bridge-status-controller/src/bridge-status-controller.ts
+++ b/packages/bridge-status-controller/src/bridge-status-controller.ts
@@ -5,7 +5,6 @@ import type {
   RequiredEventContextFromClient,
   TxData,
   QuoteResponse,
-  Intent,
   Trade,
 } from '@metamask/bridge-controller';
 import {
@@ -27,6 +26,7 @@ import {
 } from '@metamask/bridge-controller';
 import type { TraceCallback } from '@metamask/controller-utils';
 import { toHex } from '@metamask/controller-utils';
+import { SignTypedDataVersion } from '@metamask/keyring-controller';
 import { StaticIntervalPollingController } from '@metamask/polling-controller';
 import {
   TransactionStatus,
@@ -1593,26 +1593,23 @@ export class BridgeStatusController extends StaticIntervalPollingController<Brid
   };
 
   /**
-   * UI-signed intent submission (fast path): the UI generates the EIP-712 signature and calls this with the raw signature.
-   * Here we submit the order to the intent provider and create a synthetic history entry for UX.
+   * Submits an intent order and creates a synthetic history entry for UX.
+   * The EIP-712 payload is always signed inside this controller via KeyringController.
    *
    * @param params - Object containing intent submission parameters
    * @param params.quoteResponse - Quote carrying intent data
-   * @param params.signature - Hex signature produced by eth_signTypedData_v4
    * @param params.accountAddress - The EOA submitting the order
    * @param params.location - The entry point from which the user initiated the swap or bridge
    * @param params.abTests - A/B test context to attribute events to specific experiments
    * @returns A lightweight TransactionMeta-like object for history linking
    */
   submitIntent = async (params: {
-    quoteResponse: QuoteResponse<TxData | string> & QuoteMetadata;
-    signature: string;
+    quoteResponse: QuoteResponse<Trade, Trade> & QuoteMetadata;
     accountAddress: string;
     location?: MetaMetricsSwapsEventSource;
     abTests?: Record<string, string>;
   }): Promise<Pick<TransactionMeta, 'id' | 'chainId' | 'type' | 'status'>> => {
-    const { quoteResponse, signature, accountAddress, location, abTests } =
-      params;
+    const { quoteResponse, accountAddress, location, abTests } = params;
 
     this.messenger.call(
       'BridgeController:stopPollingForQuotes',
@@ -1631,9 +1628,7 @@ export class BridgeStatusController extends StaticIntervalPollingController<Brid
     );
 
     try {
-      const intent = getIntentFromQuote(
-        quoteResponse as QuoteResponse & { quote: { intent?: Intent } },
-      );
+      const intent = getIntentFromQuote(quoteResponse);
 
       // If backend provided an approval tx for this intent quote, submit it first (on-chain),
       // then proceed with off-chain intent submission.
@@ -1663,6 +1658,15 @@ export class BridgeStatusController extends StaticIntervalPollingController<Brid
 
       const { srcChainId: chainId, requestId } = quoteResponse.quote;
 
+      const signature = await this.messenger.call(
+        'KeyringController:signTypedMessage',
+        {
+          from: accountAddress,
+          data: intent.typedData,
+        },
+        SignTypedDataVersion.V4,
+      );
+
       const submissionParams: IntentSubmissionParams = {
         srcChainId: chainId.toString(),
         quoteId: requestId,
@@ -1817,11 +1821,14 @@ export class BridgeStatusController extends StaticIntervalPollingController<Brid
       EventName
     >[EventName],
   ): void => {
+    const { ab_tests: eventAbTests } =
+      (eventProperties as
+        | Record<string, Record<string, string> | undefined>
+        | undefined) ?? {};
     const historyAbTests = txMetaId
       ? this.state.txHistory?.[txMetaId]?.abTests
       : undefined;
-    const resolvedAbTests =
-      eventProperties?.ab_tests ?? historyAbTests ?? undefined;
+    const resolvedAbTests = eventAbTests ?? historyAbTests ?? undefined;
 
     const baseProperties = {
       action_type: MetricsActionType.SWAPBRIDGE_V1,
diff --git a/packages/bridge-status-controller/src/types.ts b/packages/bridge-status-controller/src/types.ts
index ed410151560..e4fe5193c3d 100644
--- a/packages/bridge-status-controller/src/types.ts
+++ b/packages/bridge-status-controller/src/types.ts
@@ -14,6 +14,7 @@ import type {
   MetaMetricsSwapsEventSource,
 } from '@metamask/bridge-controller';
 import type { GetGasFeeState } from '@metamask/gas-fee-controller';
+import type { KeyringControllerSignTypedMessageAction } from '@metamask/keyring-controller';
 import type { Messenger } from '@metamask/messenger';
 import type {
   NetworkControllerFindNetworkClientIdByChainIdAction,
@@ -310,7 +311,8 @@ type AllowedActions =
   | GetGasFeeState
   | AccountsControllerGetAccountByAddressAction
   | RemoteFeatureFlagControllerGetStateAction
-  | AuthenticationControllerGetBearerTokenAction;
+  | AuthenticationControllerGetBearerTokenAction
+  | KeyringControllerSignTypedMessageAction;
 
 /**
  * The external events available to the BridgeStatusController.
diff --git a/yarn.lock b/yarn.lock
index 4ad12d57ba5..1c78c2f861c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2787,6 +2787,7 @@ __metadata:
     "@metamask/bridge-controller": "npm:^67.2.0"
     "@metamask/controller-utils": "npm:^11.19.0"
     "@metamask/gas-fee-controller": "npm:^26.0.3"
+    "@metamask/keyring-controller": "npm:^25.1.0"
     "@metamask/network-controller": "npm:^30.0.0"
     "@metamask/polling-controller": "npm:^16.0.3"
     "@metamask/profile-sync-controller": "npm:^27.1.0"