diff --git a/modules/bitgo/test/v2/unit/keychains.ts b/modules/bitgo/test/v2/unit/keychains.ts
index 09b60cd2f5..8f49a1984e 100644
--- a/modules/bitgo/test/v2/unit/keychains.ts
+++ b/modules/bitgo/test/v2/unit/keychains.ts
@@ -587,7 +587,7 @@ describe('V2 Keychains', function () {
 
       ['tbsc'].forEach((coin) => {
         it('should create ECDSA TSS Keychains', async function () {
-          nock(bgUrl).get('/api/v2/tss/settings').reply(200, {
+          nock(bgUrl).get('/api/v2/tss/settings').query(true).reply(200, {
             coinSettings: {},
           });
           sandbox.stub(ECDSAUtils.EcdsaUtils.prototype, 'createKeychains').resolves(stubbedKeychainsTriplet);
@@ -601,6 +601,38 @@ describe('V2 Keychains', function () {
         });
       });
 
+      ['tsol'].forEach((coin) => {
+        it('should forward the enterprise param on the GET /tss/settings call', async function () {
+          // Exact query match (not .query(true)) — this only passes if `enterprise` is actually
+          // forwarded on the request, proving WCI-1358's fix rather than just tolerating it.
+          const tssSettingsNock = nock(bgUrl)
+            .get('/api/v2/tss/settings')
+            .query({ enterprise: 'enterprise-123' })
+            .reply(200, { coinSettings: {} });
+          sandbox.stub(EDDSAUtils.default.prototype, 'createKeychains').resolves(stubbedKeychainsTriplet);
+          await bitgo.coin(coin).keychains().createMpc({
+            multisigType: 'tss',
+            passphrase: 'password',
+            enterprise: 'enterprise-123',
+            originalPasscodeEncryptionCode: 'originalPasscodeEncryptionCode',
+          });
+          tssSettingsNock.isDone().should.be.true();
+        });
+      });
+
+      ['tsol'].forEach((coin) => {
+        it('should send no enterprise query param on GET /tss/settings when enterprise is not supplied', async function () {
+          const tssSettingsNock = nock(bgUrl).get('/api/v2/tss/settings').reply(200, { coinSettings: {} });
+          sandbox.stub(EDDSAUtils.default.prototype, 'createKeychains').resolves(stubbedKeychainsTriplet);
+          await bitgo.coin(coin).keychains().createMpc({
+            multisigType: 'tss',
+            passphrase: 'password',
+            originalPasscodeEncryptionCode: 'originalPasscodeEncryptionCode',
+          });
+          tssSettingsNock.isDone().should.be.true();
+        });
+      });
+
       ['tsol'].forEach((coin) => {
         it('should pass webauthnInfo to createKeychains for EDDSA TSS', async function () {
           const webauthnInfo = {
@@ -624,7 +656,7 @@ describe('V2 Keychains', function () {
 
       ['tbsc'].forEach((coin) => {
         it('should reject safe root creation when the resolved ceremony is legacy MPCv1', async function () {
-          nock(bgUrl).get('/api/v2/tss/settings').reply(200, {
+          nock(bgUrl).get('/api/v2/tss/settings').query(true).reply(200, {
             coinSettings: {},
           });
           const createKeychains = sandbox
@@ -646,7 +678,7 @@ describe('V2 Keychains', function () {
 
       ['tbsc'].forEach((coin) => {
         it('should pass webauthnInfo to createKeychains for ECDSA TSS', async function () {
-          nock(bgUrl).get('/api/v2/tss/settings').reply(200, {
+          nock(bgUrl).get('/api/v2/tss/settings').query(true).reply(200, {
             coinSettings: {},
           });
           const webauthnInfo = {
@@ -680,6 +712,7 @@ describe('V2 Keychains', function () {
       beforeEach(function () {
         nock(bgUrl)
           .get('/api/v2/tss/settings')
+          .query(true)
           .reply(200, {
             coinSettings: {
               eth: {
diff --git a/modules/bitgo/test/v2/unit/wallets.ts b/modules/bitgo/test/v2/unit/wallets.ts
index c9e2c3999f..db3a91e723 100644
--- a/modules/bitgo/test/v2/unit/wallets.ts
+++ b/modules/bitgo/test/v2/unit/wallets.ts
@@ -570,6 +570,7 @@ describe('V2 Wallets:', function () {
     beforeEach(function () {
       nock('https://bitgo.fakeurl')
         .get(`/api/v2/tss/settings`)
+        .query(true)
         .times(2)
         .reply(200, {
           coinSettings: {
@@ -825,6 +826,7 @@ describe('V2 Wallets:', function () {
       // FLRP is ECDSA, so generateCustodialMpcWallet fetches TSS settings
       nock('https://bitgo.fakeurl')
         .get('/api/v2/tss/settings')
+        .query(true)
         .reply(200, { coinSettings: { flrp: { walletCreationSettings: {} } } });
 
       const walletNock = nock('https://bitgo.fakeurl')
@@ -1052,7 +1054,7 @@ describe('V2 Wallets:', function () {
           },
         },
       };
-      nock('https://bitgo.fakeurl').get(`/api/v2/tss/settings`).times(2).reply(200, tssSettings);
+      nock('https://bitgo.fakeurl').get(`/api/v2/tss/settings`).query(true).times(2).reply(200, tssSettings);
     });
 
     afterEach(function () {
@@ -1424,7 +1426,7 @@ describe('V2 Wallets:', function () {
           },
         },
       };
-      nock('https://bitgo.fakeurl').get(`/api/v2/tss/settings`).times(2).reply(200, tssSettings);
+      nock('https://bitgo.fakeurl').get(`/api/v2/tss/settings`).query(true).times(2).reply(200, tssSettings);
     });
 
     afterEach(function () {
@@ -1487,6 +1489,7 @@ describe('V2 Wallets:', function () {
       nock.cleanAll();
       nock('https://bitgo.fakeurl')
         .get('/api/v2/tss/settings')
+        .query(true)
         .reply(200, { coinSettings: { sol: { walletCreationSettings: {} } } });
 
       const testCoin = bitgo.coin('tsol');
diff --git a/modules/sdk-core/src/bitgo/keychain/keychains.ts b/modules/sdk-core/src/bitgo/keychain/keychains.ts
index b286bc6aac..70b95857fc 100644
--- a/modules/sdk-core/src/bitgo/keychain/keychains.ts
+++ b/modules/sdk-core/src/bitgo/keychain/keychains.ts
@@ -374,7 +374,10 @@ export class Keychains implements IKeychains {
       throw new Error('Unsupported multi-sig type');
     }
 
-    const tssSettings: TssSettings = await this.bitgo.get(this.bitgo.microservicesUrl('/api/v2/tss/settings')).result();
+    const tssSettings: TssSettings = await this.bitgo
+      .get(this.bitgo.microservicesUrl('/api/v2/tss/settings'))
+      .query({ enterprise: params.enterprise })
+      .result();
     const multisigTypeVersion =
       tssSettings.coinSettings[this.baseCoin.getFamily()]?.walletCreationSettings?.multiSigTypeVersion;
 
diff --git a/modules/sdk-core/src/bitgo/utils/tss/eddsa/eddsaMPCv2.ts b/modules/sdk-core/src/bitgo/utils/tss/eddsa/eddsaMPCv2.ts
index c52b901933..87cb672f03 100644
--- a/modules/sdk-core/src/bitgo/utils/tss/eddsa/eddsaMPCv2.ts
+++ b/modules/sdk-core/src/bitgo/utils/tss/eddsa/eddsaMPCv2.ts
@@ -207,6 +207,7 @@ export class EddsaMPCv2Utils extends BaseEddsaUtils {
       params.passphrase,
       params.originalPasscodeEncryptionCode,
       params.encryptionVersion,
+      params.enterprise,
       params.safeId
     );
     const bitgoKeychainPromise = this.addBitgoKeychain(userCommonKeychain, params.safeId);
@@ -306,8 +307,8 @@ export class EddsaMPCv2Utils extends BaseEddsaUtils {
 
     const keychains = this.baseCoin.keychains();
     const [userKeychain, backupKeychain, bitgoKeychain] = await Promise.all([
-      keychains.add({ source: 'user', keyType: 'tss' as KeyType, commonKeychain, isMPCv2: true }),
-      keychains.add({ source: 'backup', keyType: 'tss' as KeyType, commonKeychain, isMPCv2: true }),
+      keychains.add({ source: 'user', keyType: 'tss' as KeyType, commonKeychain, isMPCv2: true, enterprise }),
+      keychains.add({ source: 'backup', keyType: 'tss' as KeyType, commonKeychain, isMPCv2: true, enterprise }),
       this.addBitgoKeychain(commonKeychain),
     ]);
 
@@ -372,6 +373,7 @@ export class EddsaMPCv2Utils extends BaseEddsaUtils {
       originalPasscodeEncryptionCode,
       isMPCv2: true,
       safeId,
+      enterprise,
     };
 
     if (webauthnInfo && participantIndex === MPCv2PartiesEnum.USER && privateMaterialBase64) {
@@ -425,6 +427,7 @@ export class EddsaMPCv2Utils extends BaseEddsaUtils {
     passphrase: string,
     originalPasscodeEncryptionCode?: string,
     encryptionVersion?: EncryptionVersion,
+    enterprise?: string,
     safeId?: string
   ): Promise<Keychain> {
     return this.createParticipantKeychain(
@@ -436,7 +439,7 @@ export class EddsaMPCv2Utils extends BaseEddsaUtils {
       originalPasscodeEncryptionCode,
       undefined,
       encryptionVersion,
-      undefined,
+      enterprise,
       safeId
     );
   }
diff --git a/modules/sdk-core/src/bitgo/wallet/wallets.ts b/modules/sdk-core/src/bitgo/wallet/wallets.ts
index 770f00c602..6128ac9d17 100644
--- a/modules/sdk-core/src/bitgo/wallet/wallets.ts
+++ b/modules/sdk-core/src/bitgo/wallet/wallets.ts
@@ -131,6 +131,7 @@ export class Wallets implements IWallets {
       if (params.multisigType === 'tss' && this.baseCoin.getMPCAlgorithm() === 'ecdsa' && params.walletVersion === 3) {
         const tssSettings: TssSettings = await this.bitgo
           .get(this.bitgo.microservicesUrl('/api/v2/tss/settings'))
+          .query({ enterprise: params.enterprise })
           .result();
         const multisigTypeVersion =
           tssSettings.coinSettings[this.baseCoin.getFamily()]?.walletCreationSettings?.multiSigTypeVersion;
@@ -1800,6 +1801,7 @@ export class Wallets implements IWallets {
       }
       const tssSettings: TssSettings = await this.bitgo
         .get(this.bitgo.microservicesUrl('/api/v2/tss/settings'))
+        .query({ enterprise })
         .result();
       const multisigTypeVersion =
         tssSettings.coinSettings[this.baseCoin.getFamily()]?.walletCreationSettings?.multiSigTypeVersion;
@@ -1875,6 +1877,7 @@ export class Wallets implements IWallets {
     if (multisigType === 'tss' && this.baseCoin.getMPCAlgorithm() === 'ecdsa') {
       const tssSettings: TssSettings = await this.bitgo
         .get(this.bitgo.microservicesUrl('/api/v2/tss/settings'))
+        .query({ enterprise })
         .result();
       const multisigTypeVersion =
         tssSettings.coinSettings[this.baseCoin.getFamily()]?.walletCreationSettings?.multiSigTypeVersion;
@@ -1945,6 +1948,7 @@ export class Wallets implements IWallets {
     if (multisigType === 'tss' && this.baseCoin.getMPCAlgorithm() === 'ecdsa') {
       const tssSettings: TssSettings = await this.bitgo
         .get(this.bitgo.microservicesUrl('/api/v2/tss/settings'))
+        .query({ enterprise })
         .result();
       multisigTypeVersion =
         tssSettings.coinSettings[this.baseCoin.getFamily()]?.walletCreationSettings?.coldMultiSigTypeVersion;
@@ -2033,6 +2037,7 @@ export class Wallets implements IWallets {
     if (multisigType === 'tss' && this.baseCoin.getMPCAlgorithm() === 'ecdsa') {
       const tssSettings: TssSettings = await this.bitgo
         .get(this.bitgo.microservicesUrl('/api/v2/tss/settings'))
+        .query({ enterprise })
         .result();
       const multisigTypeVersion =
         tssSettings.coinSettings[this.baseCoin.getFamily()]?.walletCreationSettings?.custodialMultiSigTypeVersion;
diff --git a/modules/sdk-core/test/unit/bitgo/wallet/walletsExternalSigner.ts b/modules/sdk-core/test/unit/bitgo/wallet/walletsExternalSigner.ts
index 8b9d9750c5..68d510fc99 100644
--- a/modules/sdk-core/test/unit/bitgo/wallet/walletsExternalSigner.ts
+++ b/modules/sdk-core/test/unit/bitgo/wallet/walletsExternalSigner.ts
@@ -365,7 +365,9 @@ describe('Wallets - external signer onchain wallet generation', function () {
         post: sinon.stub().returns({
           send: sinon.stub().returns({ result: sinon.stub().resolves({ id: 'tss-wallet-id' }) }),
         }),
-        get: sinon.stub().returns({ result: sinon.stub().resolves({ coinSettings: {} }) }),
+        get: sinon
+          .stub()
+          .returns({ query: sinon.stub().returnsThis(), result: sinon.stub().resolves({ coinSettings: {} }) }),
         setRequestTracer: sinon.stub(),
         microservicesUrl: sinon.stub().returns('/api/v2/tss/settings'),
       };
@@ -546,7 +548,9 @@ describe('Wallets - external signer onchain wallet generation', function () {
         send = sinon.stub().returns({ result: sinon.stub().resolves({ id: 'tss-wallet-id' }) });
         const integrationBitGo = {
           post: sinon.stub().returns({ send }),
-          get: sinon.stub().returns({ result: sinon.stub().resolves({ coinSettings: {} }) }),
+          get: sinon
+            .stub()
+            .returns({ query: sinon.stub().returnsThis(), result: sinon.stub().resolves({ coinSettings: {} }) }),
           setRequestTracer: sinon.stub(),
           microservicesUrl: sinon.stub().returns('/api/v2/tss/settings'),
           ...bitgoOverrides,
@@ -593,6 +597,7 @@ describe('Wallets - external signer onchain wallet generation', function () {
           { isEVM: sinon.stub().returns(true) },
           {
             get: sinon.stub().returns({
+              query: sinon.stub().returnsThis(),
               result: sinon.stub().resolves({
                 coinSettings: { eth: { walletCreationSettings: { multiSigTypeVersion: 'MPCv2' } } },
               }),