diff --git a/modules/express/test/unit/typedRoutes/simpleCreate.ts b/modules/express/test/unit/typedRoutes/simpleCreate.ts
new file mode 100644
index 0000000000..d9bee2a36b
--- /dev/null
+++ b/modules/express/test/unit/typedRoutes/simpleCreate.ts
@@ -0,0 +1,323 @@
+import * as assert from 'assert';
+import * as t from 'io-ts';
+import { SimpleCreateRequestBody, PostSimpleCreate } from '../../../src/typedRoutes/api/v1/simpleCreate';
+import { assertDecode } from './common';
+import 'should';
+import 'should-http';
+import 'should-sinon';
+import * as sinon from 'sinon';
+import { BitGo } from 'bitgo';
+import { setupAgent } from '../../lib/testutil';
+
+describe('SimpleCreate codec tests', function () {
+  describe('SimpleCreateRequestBody', function () {
+    it('should validate body with required field (passphrase)', function () {
+      const validBody = {
+        passphrase: 'mySecurePassphrase123',
+      };
+
+      const decoded = assertDecode(t.type(SimpleCreateRequestBody), validBody);
+      assert.strictEqual(decoded.passphrase, validBody.passphrase);
+      assert.strictEqual(decoded.label, undefined);
+      assert.strictEqual(decoded.backupXpub, undefined);
+    });
+
+    it('should validate body with all fields', function () {
+      const validBody = {
+        passphrase: 'mySecurePassphrase123',
+        label: 'My Test Wallet',
+        backupXpub:
+          'xpub661MyMwAqRbcFtXgS5sYJABqqG9YLmC4Q1Rdap9gSE8NqtwybGhePY2gZ29ESFjqJoCu1Rupje8YtGqsefD265TMg7usUDFdp6W1EGMcet8',
+        backupXpubProvider: 'keyternal',
+        enterprise: 'enterprise123',
+        passcodeEncryptionCode: 'encryptionCode123',
+        disableTransactionNotifications: true,
+        disableKRSEmail: false,
+      };
+
+      const decoded = assertDecode(t.type(SimpleCreateRequestBody), validBody);
+      assert.strictEqual(decoded.passphrase, validBody.passphrase);
+      assert.strictEqual(decoded.label, validBody.label);
+      assert.strictEqual(decoded.backupXpub, validBody.backupXpub);
+      assert.strictEqual(decoded.backupXpubProvider, validBody.backupXpubProvider);
+      assert.strictEqual(decoded.enterprise, validBody.enterprise);
+      assert.strictEqual(decoded.passcodeEncryptionCode, validBody.passcodeEncryptionCode);
+      assert.strictEqual(decoded.disableTransactionNotifications, validBody.disableTransactionNotifications);
+      assert.strictEqual(decoded.disableKRSEmail, validBody.disableKRSEmail);
+    });
+
+    it('should reject body with missing passphrase', function () {
+      const invalidBody = {
+        label: 'My Wallet',
+      };
+
+      assert.throws(() => {
+        assertDecode(t.type(SimpleCreateRequestBody), invalidBody);
+      });
+    });
+
+    it('should reject body with non-string passphrase', function () {
+      const invalidBody = {
+        passphrase: 12345,
+      };
+
+      assert.throws(() => {
+        assertDecode(t.type(SimpleCreateRequestBody), invalidBody);
+      });
+    });
+  });
+
+  describe('SimpleCreateResponse', function () {
+    const SimpleCreateResponse = PostSimpleCreate.response[200];
+
+    it('should validate response with all required fields', function () {
+      const validResponse = {
+        wallet: 'wallet_id_123',
+        userKeychain: 'user_keychain_123',
+        backupKeychain: 'backup_keychain_123',
+      };
+
+      const decoded = assertDecode(SimpleCreateResponse, validResponse);
+      assert.strictEqual(decoded.wallet, validResponse.wallet);
+      assert.strictEqual(decoded.userKeychain, validResponse.userKeychain);
+      assert.strictEqual(decoded.backupKeychain, validResponse.backupKeychain);
+    });
+
+    it('should reject response with missing wallet field', function () {
+      const invalidResponse = {
+        userKeychain: 'user_keychain_123',
+        backupKeychain: 'backup_keychain_123',
+      };
+
+      assert.throws(() => {
+        assertDecode(SimpleCreateResponse, invalidResponse);
+      });
+    });
+
+    it('should reject response with non-string fields', function () {
+      const invalidResponse = {
+        wallet: 123,
+        userKeychain: 'user_keychain_123',
+        backupKeychain: 'backup_keychain_123',
+      };
+
+      assert.throws(() => {
+        assertDecode(SimpleCreateResponse, invalidResponse);
+      });
+    });
+  });
+
+  describe('PostSimpleCreate route definition', function () {
+    it('should have the correct path', function () {
+      assert.strictEqual(PostSimpleCreate.path, '/api/v1/wallets/simplecreate');
+    });
+
+    it('should have the correct HTTP method', function () {
+      assert.strictEqual(PostSimpleCreate.method, 'POST');
+    });
+
+    it('should have the correct response types', function () {
+      assert.ok(PostSimpleCreate.response[200]);
+      assert.ok(PostSimpleCreate.response[400]);
+    });
+  });
+
+  // ==========================================
+  // SUPERTEST INTEGRATION TESTS
+  // ==========================================
+
+  describe('Supertest Integration Tests', function () {
+    const agent = setupAgent();
+
+    const mockCreateWalletResponse = {
+      wallet: 'wallet_id_123',
+      userKeychain: 'user_keychain_123',
+      backupKeychain: 'backup_keychain_123',
+    };
+
+    afterEach(function () {
+      sinon.restore();
+    });
+
+    it('should successfully create wallet with passphrase only', async function () {
+      const requestBody = {
+        passphrase: 'mySecurePassphrase123',
+      };
+
+      const createWalletStub = sinon.stub().resolves(mockCreateWalletResponse);
+      const mockWallets = {
+        createWalletWithKeychains: createWalletStub,
+      };
+
+      sinon.stub(BitGo.prototype, 'wallets').returns(mockWallets as any);
+
+      const result = await agent
+        .post('/api/v1/wallets/simplecreate')
+        .set('Authorization', 'Bearer test_access_token_12345')
+        .set('Content-Type', 'application/json')
+        .send(requestBody);
+
+      assert.strictEqual(result.status, 200);
+      result.body.should.have.property('wallet');
+      result.body.should.have.property('userKeychain');
+      result.body.should.have.property('backupKeychain');
+      assert.strictEqual(result.body.wallet, mockCreateWalletResponse.wallet);
+
+      const decodedResponse = assertDecode(PostSimpleCreate.response[200], result.body);
+      assert.strictEqual(decodedResponse.wallet, mockCreateWalletResponse.wallet);
+
+      sinon.assert.calledOnce(createWalletStub);
+      sinon.assert.calledWith(createWalletStub, requestBody);
+    });
+
+    it('should successfully create wallet with all optional parameters', async function () {
+      const requestBody = {
+        passphrase: 'mySecurePassphrase123',
+        label: 'My Test Wallet',
+        backupXpub:
+          'xpub661MyMwAqRbcFtXgS5sYJABqqG9YLmC4Q1Rdap9gSE8NqtwybGhePY2gZ29ESFjqJoCu1Rupje8YtGqsefD265TMg7usUDFdp6W1EGMcet8',
+        enterprise: 'enterprise123',
+        disableTransactionNotifications: true,
+      };
+
+      const createWalletStub = sinon.stub().resolves(mockCreateWalletResponse);
+      const mockWallets = {
+        createWalletWithKeychains: createWalletStub,
+      };
+
+      sinon.stub(BitGo.prototype, 'wallets').returns(mockWallets as any);
+
+      const result = await agent
+        .post('/api/v1/wallets/simplecreate')
+        .set('Authorization', 'Bearer test_access_token_12345')
+        .set('Content-Type', 'application/json')
+        .send(requestBody);
+
+      assert.strictEqual(result.status, 200);
+      assert.strictEqual(result.body.wallet, mockCreateWalletResponse.wallet);
+
+      const decodedResponse = assertDecode(PostSimpleCreate.response[200], result.body);
+      assert.ok(decodedResponse);
+
+      sinon.assert.calledOnce(createWalletStub);
+      sinon.assert.calledWith(createWalletStub, requestBody);
+    });
+
+    it('should successfully create wallet with KRS backup provider', async function () {
+      const requestBody = {
+        passphrase: 'mySecurePassphrase123',
+        label: 'KRS Wallet',
+        backupXpubProvider: 'keyternal',
+      };
+
+      const createWalletStub = sinon.stub().resolves(mockCreateWalletResponse);
+      const mockWallets = {
+        createWalletWithKeychains: createWalletStub,
+      };
+
+      sinon.stub(BitGo.prototype, 'wallets').returns(mockWallets as any);
+
+      const result = await agent
+        .post('/api/v1/wallets/simplecreate')
+        .set('Authorization', 'Bearer test_access_token_12345')
+        .set('Content-Type', 'application/json')
+        .send(requestBody);
+
+      assert.strictEqual(result.status, 200);
+      assert.strictEqual(result.body.wallet, mockCreateWalletResponse.wallet);
+
+      sinon.assert.calledOnce(createWalletStub);
+      sinon.assert.calledWith(createWalletStub, requestBody);
+    });
+  });
+
+  // ==========================================
+  // ERROR HANDLING TESTS
+  // ==========================================
+
+  describe('Error Handling Tests', function () {
+    const agent = setupAgent();
+
+    afterEach(function () {
+      sinon.restore();
+    });
+
+    it('should return 400 for missing passphrase', async function () {
+      const requestBody = {
+        label: 'My Wallet',
+      };
+
+      const result = await agent
+        .post('/api/v1/wallets/simplecreate')
+        .set('Authorization', 'Bearer test_access_token_12345')
+        .set('Content-Type', 'application/json')
+        .send(requestBody);
+
+      assert.strictEqual(result.status, 400);
+      assert.ok(Array.isArray(result.body));
+      assert.ok(result.body.length > 0);
+    });
+
+    it('should return 400 for non-string passphrase', async function () {
+      const requestBody = {
+        passphrase: 12345,
+      };
+
+      const result = await agent
+        .post('/api/v1/wallets/simplecreate')
+        .set('Authorization', 'Bearer test_access_token_12345')
+        .set('Content-Type', 'application/json')
+        .send(requestBody);
+
+      assert.strictEqual(result.status, 400);
+      assert.ok(Array.isArray(result.body));
+      assert.ok(result.body.length > 0);
+    });
+
+    it('should handle wallet creation failure', async function () {
+      const requestBody = {
+        passphrase: 'mySecurePassphrase123',
+        label: 'Test Wallet',
+      };
+
+      const createWalletStub = sinon.stub().rejects(new Error('Wallet creation failed'));
+      const mockWallets = {
+        createWalletWithKeychains: createWalletStub,
+      };
+
+      sinon.stub(BitGo.prototype, 'wallets').returns(mockWallets as any);
+
+      const result = await agent
+        .post('/api/v1/wallets/simplecreate')
+        .set('Authorization', 'Bearer test_access_token_12345')
+        .set('Content-Type', 'application/json')
+        .send(requestBody);
+
+      assert.strictEqual(result.status, 500);
+      result.body.should.have.property('error');
+    });
+
+    it('should handle invalid passphrase error', async function () {
+      const requestBody = {
+        passphrase: 'weak',
+        label: 'Test Wallet',
+      };
+
+      const createWalletStub = sinon.stub().rejects(new Error('Passphrase too weak'));
+      const mockWallets = {
+        createWalletWithKeychains: createWalletStub,
+      };
+
+      sinon.stub(BitGo.prototype, 'wallets').returns(mockWallets as any);
+
+      const result = await agent
+        .post('/api/v1/wallets/simplecreate')
+        .set('Authorization', 'Bearer test_access_token_12345')
+        .set('Content-Type', 'application/json')
+        .send(requestBody);
+
+      assert.strictEqual(result.status, 500);
+      result.body.should.have.property('error');
+    });
+  });
+});