diff --git a/packages/transaction-controller/CHANGELOG.md b/packages/transaction-controller/CHANGELOG.md
index cc9bb93dec7..30d5367adc1 100644
--- a/packages/transaction-controller/CHANGELOG.md
+++ b/packages/transaction-controller/CHANGELOG.md
@@ -7,6 +7,16 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Expose `confirmExternalTransaction`, `getNonceLock`, `getTransactions`, and `updateTransaction` actions through the messenger ([#6615](https://github.com/MetaMask/core/pull/6615))
+  - Like other action methods, they are callable as `TransactionController:*`
+  - Also add associated types:
+    - `TransactionControllerConfirmExternalTransactionAction`
+    - `TransactionControllerGetNonceLockAction`
+    - `TransactionControllerGetTransactionsAction`
+    - `TransactionControllerUpdateTransactionAction`
+
 ### Changed
 
 - Bump `@metamask/controller-utils` from `^11.12.0` to `^11.13.0` ([#6620](https://github.com/MetaMask/core/pull/6620))
diff --git a/packages/transaction-controller/src/TransactionController.test.ts b/packages/transaction-controller/src/TransactionController.test.ts
index 80405a42225..d12e63d3d8b 100644
--- a/packages/transaction-controller/src/TransactionController.test.ts
+++ b/packages/transaction-controller/src/TransactionController.test.ts
@@ -8044,4 +8044,171 @@ describe('TransactionController', () => {
       `);
     });
   });
+
+  describe('messenger actions', () => {
+    describe('TransactionController:confirmExternalTransaction', () => {
+      it('calls confirmExternalTransaction method via messenger', async () => {
+        const { controller, messenger } = setupController();
+        const externalTransactionToConfirm = {
+          id: '1',
+          chainId: toHex(1),
+          networkClientId: NETWORK_CLIENT_ID_MOCK,
+          time: 123456789,
+          status: TransactionStatus.confirmed as const,
+          txParams: {
+            gasUsed: undefined,
+            from: ACCOUNT_MOCK,
+            to: ACCOUNT_2_MOCK,
+          },
+        };
+        const externalTransactionReceipt = {
+          gasUsed: '0x5208',
+        };
+        const externalBaseFeePerGas = '0x14';
+
+        await messenger.call(
+          'TransactionController:confirmExternalTransaction',
+          externalTransactionToConfirm,
+          externalTransactionReceipt,
+          externalBaseFeePerGas,
+        );
+
+        expect(controller.state.transactions).toHaveLength(1);
+        expect(controller.state.transactions[0]).toMatchObject({
+          id: '1',
+          status: TransactionStatus.confirmed,
+          txParams: {
+            from: ACCOUNT_MOCK,
+            to: ACCOUNT_2_MOCK,
+          },
+        });
+      });
+    });
+
+    describe('TransactionController:getNonceLock', () => {
+      it('calls getNonceLock method via messenger', async () => {
+        const { messenger } = setupController();
+
+        const result = await messenger.call(
+          'TransactionController:getNonceLock',
+          ACCOUNT_MOCK,
+          NETWORK_CLIENT_ID_MOCK,
+        );
+
+        expect(result).toMatchObject({
+          nextNonce: NONCE_MOCK,
+          releaseLock: expect.any(Function),
+        });
+        expect(getNonceLockSpy).toHaveBeenCalledWith(
+          ACCOUNT_MOCK,
+          NETWORK_CLIENT_ID_MOCK,
+        );
+      });
+    });
+
+    describe('TransactionController:getTransactions', () => {
+      it('calls getTransactions method via messenger with no parameters', async () => {
+        const { messenger } = setupController({
+          options: {
+            state: {
+              transactions: [
+                {
+                  ...TRANSACTION_META_MOCK,
+                  txParams: {
+                    from: ACCOUNT_MOCK,
+                    to: ACCOUNT_2_MOCK,
+                  },
+                },
+              ],
+            },
+          },
+        });
+
+        const result = await messenger.call(
+          'TransactionController:getTransactions',
+        );
+
+        expect(result).toHaveLength(1);
+        expect(result[0]).toMatchObject({
+          txParams: {
+            from: ACCOUNT_MOCK,
+            to: ACCOUNT_2_MOCK,
+          },
+        });
+      });
+
+      it('calls getTransactions method via messenger with search criteria', async () => {
+        const { messenger } = setupController({
+          options: {
+            state: {
+              transactions: [
+                {
+                  ...TRANSACTION_META_MOCK,
+                  id: '1',
+                  txParams: {
+                    from: ACCOUNT_MOCK,
+                    to: ACCOUNT_2_MOCK,
+                  },
+                },
+                {
+                  ...TRANSACTION_META_2_MOCK,
+                  id: '2',
+                  txParams: {
+                    from: ACCOUNT_2_MOCK,
+                    to: ACCOUNT_MOCK,
+                  },
+                },
+              ],
+            },
+          },
+        });
+
+        const result = await messenger.call(
+          'TransactionController:getTransactions',
+          {
+            searchCriteria: {
+              from: ACCOUNT_MOCK,
+            },
+          },
+        );
+
+        expect(result).toHaveLength(1);
+        expect(result[0].txParams.from).toBe(ACCOUNT_MOCK);
+      });
+    });
+
+    describe('TransactionController:updateTransaction', () => {
+      it('calls updateTransaction method via messenger', async () => {
+        const transaction = {
+          ...TRANSACTION_META_MOCK,
+          txParams: {
+            from: ACCOUNT_MOCK,
+            to: ACCOUNT_2_MOCK,
+          },
+        };
+        const { controller, messenger } = setupController({
+          options: {
+            state: {
+              transactions: [transaction],
+            },
+          },
+        });
+        const updatedTransaction = {
+          ...transaction,
+          txParams: {
+            ...transaction.txParams,
+            value: '0x1',
+          },
+        };
+
+        await messenger.call(
+          'TransactionController:updateTransaction',
+          updatedTransaction,
+          'Test update note',
+        );
+
+        expect(controller.state.transactions[0].txParams.value).toBe('0x1');
+      });
+    });
+  });
 });
diff --git a/packages/transaction-controller/src/TransactionController.ts b/packages/transaction-controller/src/TransactionController.ts
index 07d928c4385..67b926459b0 100644
--- a/packages/transaction-controller/src/TransactionController.ts
+++ b/packages/transaction-controller/src/TransactionController.ts
@@ -308,13 +308,59 @@ export type TransactionControllerEstimateGasAction = {
   handler: TransactionController['estimateGas'];
 };
 
+/**
+ * Adds external provided transaction to state as confirmed transaction.
+ *
+ * @param transactionMeta - TransactionMeta to add transactions.
+ * @param transactionReceipt - TransactionReceipt of the external transaction.
+ * @param baseFeePerGas - Base fee per gas of the external transaction.
+ */
+export type TransactionControllerConfirmExternalTransactionAction = {
+  type: `${typeof controllerName}:confirmExternalTransaction`;
+  handler: TransactionController['confirmExternalTransaction'];
+};
+
+export type TransactionControllerGetNonceLockAction = {
+  type: `${typeof controllerName}:getNonceLock`;
+  handler: TransactionController['getNonceLock'];
+};
+
+/**
+ * Search transaction metadata for matching entries.
+ *
+ * @param opts - Options bag.
+ * @param opts.initialList - The transactions to search. Defaults to the current state.
+ * @param opts.limit - The maximum number of transactions to return. No limit by default.
+ * @param opts.searchCriteria - An object containing values or functions for transaction properties to filter transactions with.
+ * @returns An array of transactions matching the provided options.
+ */
+export type TransactionControllerGetTransactionsAction = {
+  type: `${typeof controllerName}:getTransactions`;
+  handler: TransactionController['getTransactions'];
+};
+
+/**
+ * Updates an existing transaction in state.
+ *
+ * @param transactionMeta - The new transaction to store in state.
+ * @param note - A note or update reason to include in the transaction history.
+ */
+export type TransactionControllerUpdateTransactionAction = {
+  type: `${typeof controllerName}:updateTransaction`;
+  handler: TransactionController['updateTransaction'];
+};
+
 /**
  * The internal actions available to the TransactionController.
  */
 export type TransactionControllerActions =
+  | TransactionControllerConfirmExternalTransactionAction
   | TransactionControllerEstimateGasAction
+  | TransactionControllerGetNonceLockAction
   | TransactionControllerGetStateAction
-  | TransactionControllerUpdateCustodialTransactionAction;
+  | TransactionControllerGetTransactionsAction
+  | TransactionControllerUpdateCustodialTransactionAction
+  | TransactionControllerUpdateTransactionAction;
 
 /**
  * Configuration options for the PendingTransactionTracker
@@ -4416,15 +4462,35 @@ export class TransactionController extends BaseController<
   }
 
   #registerActionHandlers(): void {
+    this.messagingSystem.registerActionHandler(
+      `${controllerName}:confirmExternalTransaction`,
+      this.confirmExternalTransaction.bind(this),
+    );
+
     this.messagingSystem.registerActionHandler(
       `${controllerName}:estimateGas`,
       this.estimateGas.bind(this),
     );
 
+    this.messagingSystem.registerActionHandler(
+      `${controllerName}:getNonceLock`,
+      this.getNonceLock.bind(this),
+    );
+
+    this.messagingSystem.registerActionHandler(
+      `${controllerName}:getTransactions`,
+      this.getTransactions.bind(this),
+    );
+
     this.messagingSystem.registerActionHandler(
       `${controllerName}:updateCustodialTransaction`,
       this.updateCustodialTransaction.bind(this),
     );
+
+    this.messagingSystem.registerActionHandler(
+      `${controllerName}:updateTransaction`,
+      this.updateTransaction.bind(this),
+    );
   }
 
   #deleteTransaction(transactionId: string) {
diff --git a/packages/transaction-controller/src/index.ts b/packages/transaction-controller/src/index.ts
index c435c57a832..fcd4e123f3e 100644
--- a/packages/transaction-controller/src/index.ts
+++ b/packages/transaction-controller/src/index.ts
@@ -2,9 +2,12 @@ export type {
   MethodData,
   Result,
   TransactionControllerActions,
+  TransactionControllerConfirmExternalTransactionAction,
   TransactionControllerEvents,
   TransactionControllerEstimateGasAction,
+  TransactionControllerGetNonceLockAction,
   TransactionControllerGetStateAction,
+  TransactionControllerGetTransactionsAction,
   TransactionControllerIncomingTransactionsReceivedEvent,
   TransactionControllerPostTransactionBalanceUpdatedEvent,
   TransactionControllerSpeedupTransactionAddedEvent,
@@ -23,6 +26,7 @@ export type {
   TransactionControllerTransactionSubmittedEvent,
   TransactionControllerUnapprovedTransactionAddedEvent,
   TransactionControllerUpdateCustodialTransactionAction,
+  TransactionControllerUpdateTransactionAction,
   TransactionControllerMessenger,
   TransactionControllerOptions,
 } from './TransactionController';