diff --git a/modules/sdk-core/src/bitgo/safe/iSafes.ts b/modules/sdk-core/src/bitgo/safe/iSafes.ts
index 7a0212b8cd..7e308994ae 100644
--- a/modules/sdk-core/src/bitgo/safe/iSafes.ts
+++ b/modules/sdk-core/src/bitgo/safe/iSafes.ts
@@ -24,15 +24,19 @@ export interface CreateSafeOptions {
 
 /**
  * Handle returned by `initializeSafe`, threaded into the key ceremonies and finalize.
+ *
+ * `enabledRootSlots` is the server-decided (Flipt, evaluated once at initialize) set of root-key
+ * slots to generate; absent (older WP) falls back to all 4 slots.
  * @experimental
  */
 export interface SafeCreationHandle {
   safeId: string;
+  enabledRootSlots?: InitializeSafeResponse['enabledRootSlots'];
 }
 
 /**
- * The 12 minted root key ids produced by `createSafeKeys`, as 4 ordered [user, backup, bitgo]
- * triplets — exactly the payload `finalizeSafe` consumes.
+ * The minted root key ids produced by `createSafeKeys`, as ordered [user, backup, bitgo]
+ * triplets for the enabled slots — exactly the payload `finalizeSafe` consumes.
  * @experimental
  */
 export type SafeKeys = FinalizeSafeOptions;
@@ -58,24 +62,25 @@ export interface GetSafeOptions {
 export interface ISafes {
   /**
    * One-call convenience wrapper chaining the three creation phases:
-   * initialize → createSafeKeys (4 safeId-tagged ceremonies) → finalize. HOT custody only in v1.
+   * initialize → createSafeKeys (safeId-tagged ceremonies for the enabled root slots) → finalize.
+   * HOT custody only in v1.
    * @experimental
    */
   generateSafe(params: CreateSafeOptions): Promise<Safe>;
   /**
-   * Phase 1 — initialize a safe (metadata only, no key material). The server response is just
-   * `{ id, status }` (no `label`/`enterpriseId`/`creator`/`users`/`createdAt` yet), so this
-   * returns that raw shape rather than a full `Safe`.
+   * Phase 1 — initialize a safe (metadata only, no key material). The server response is
+   * `{ id, status }` plus optional `enabledRootSlots` (no `label`/`enterpriseId`/`creator`/`users`/
+   * `createdAt` yet), so this returns that raw shape rather than a full `Safe`.
    * @experimental
    */
   initializeSafe(params: InitializeSafeOptions): Promise<InitializeSafeResponse>;
   /**
-   * Phase 2 — run the 4 root key ceremonies tagged with `safeId`; returns the 12 minted key ids.
+   * Phase 2 — run the enabled root key ceremonies tagged with `safeId`; returns the minted key ids.
    * @experimental
    */
   createSafeKeys(params: CreateSafeOptions & SafeCreationHandle): Promise<SafeKeys>;
   /**
-   * Phase 3 — finalize a safe with the 12 root key ids. Idempotent.
+   * Phase 3 — finalize a safe with the minted root key ids. Idempotent.
    * @experimental
    */
   finalizeSafe(safeId: string, params: FinalizeSafeOptions): Promise<Safe>;
diff --git a/modules/sdk-core/src/bitgo/safe/safes.ts b/modules/sdk-core/src/bitgo/safe/safes.ts
index c7be05cbdd..31b1d26407 100644
--- a/modules/sdk-core/src/bitgo/safe/safes.ts
+++ b/modules/sdk-core/src/bitgo/safe/safes.ts
@@ -9,6 +9,7 @@ import {
   FinalizeSafeBody,
   InitializeSafeBody,
   InitializeSafeResponse,
+  RootKeysByType,
   RootKeyTriplet,
   RootKeyType,
   SafeData,
@@ -86,7 +87,7 @@ export class Safes implements ISafes {
 
   /**
    * One-call convenience wrapper chaining the three creation phases:
-   * initialize (Phase 1) → createSafeKeys (Phase 2, 4 safeId-tagged ceremonies) →
+   * initialize (Phase 1) → createSafeKeys (Phase 2, enabled-slot ceremonies) →
    * finalize (Phase 3). HOT custody only in v1.
    *
    * If a key ceremony fails, `createSafeKeys` archives the safe before throwing, so a failed run
@@ -95,14 +96,18 @@ export class Safes implements ISafes {
    */
   async generateSafe(params: CreateSafeOptions): Promise<Safe> {
     const safe = await this.initializeSafe({ label: params.label });
-    const rootKeys = await this.createSafeKeys({ ...params, safeId: safe.id });
+    const rootKeys = await this.createSafeKeys({
+      ...params,
+      safeId: safe.id,
+      enabledRootSlots: safe.enabledRootSlots,
+    });
     return await this.finalizeSafe(safe.id, rootKeys);
   }
 
   /**
    * Phase 1 — initialize a safe (metadata only, no key material).
    * POST /api/v2/enterprise/:eId/safes { label }
-   * Response is just `{ id, status }` — the safe has no label/roster/etc. yet.
+   * Response is `{ id, status }` plus optional `enabledRootSlots` (absent on older WP).
    * @experimental
    */
   async initializeSafe(params: InitializeSafeOptions): Promise<InitializeSafeResponse> {
@@ -111,10 +116,11 @@ export class Safes implements ISafes {
   }
 
   /**
-   * Phase 2 — run the 4 root key ceremonies tagged with `safeId`; returns the 12 minted key ids
-   * as 4 ordered [user, backup, bitgo] triplets. HOT custody only in v1.
+   * Phase 2 — run the enabled root key ceremonies tagged with `safeId`; returns ordered
+   * [user, backup, bitgo] triplets for those slots. HOT custody only in v1.
    *
-   * All 4 ceremonies (2.1 multisig ①④, 2.2 MPC ②③) run in parallel. If any of them fail, the
+   * Absent `enabledRootSlots` (older WP, pre-gating) runs all 4 slots. Enabled ceremonies
+   * (2.1 multisig ①④, 2.2 MPC ②③) run in parallel. If any of them fail, the
    * partially-created safe is archived (a legal `initializing → archived` transition, so the
    * orphaned tagged keys are inert) and an error listing every ceremony failure is thrown —
    * create a new safe and retry.
@@ -124,24 +130,27 @@ export class Safes implements ISafes {
    * @experimental
    */
   async createSafeKeys(params: CreateSafeOptions & SafeCreationHandle): Promise<SafeKeys> {
-    const { safeId, passphrase } = params;
+    const { safeId, passphrase, enabledRootSlots } = params;
     const enterprise = this.enterpriseId;
 
-    // `slots` MUST stay index-aligned with the Promise.allSettled array below. Ordered by scheme:
-    // the two multisig roots first, then the two MPC roots.
-    const slots: RootKeyType[] = ['secp256k1Multisig', 'ed25519Multisig', 'ecdsaMpc', 'eddsaMpc'];
-    const results = await Promise.allSettled([
+    // Absent `enabledRootSlots` (older WP, pre-gating) ⇒ all 4, preserving current behavior.
+    // Ordered by scheme: the two multisig roots first, then the two MPC roots.
+    const allSlots: RootKeyType[] = ['secp256k1Multisig', 'ed25519Multisig', 'ecdsaMpc', 'eddsaMpc'];
+    const enabled = new Set(enabledRootSlots ?? allSlots);
+    const slots = allSlots.filter((slot) => enabled.has(slot));
+    const ceremonies: Record<RootKeyType, () => Promise<RootKeyTriplet>> = {
       // Phase 2.1 — multisig roots (①④): local user/backup keypairs + BitGo key, all safeId-tagged.
-      this.createMultisigRoot('secp256k1Multisig', safeId, passphrase, enterprise),
-      this.createMultisigRoot('ed25519Multisig', safeId, passphrase, enterprise),
+      secp256k1Multisig: () => this.createMultisigRoot('secp256k1Multisig', safeId, passphrase, enterprise),
+      ed25519Multisig: () => this.createMultisigRoot('ed25519Multisig', safeId, passphrase, enterprise),
       // Phase 2.2 — MPC roots (②③): the existing DKLS (②) and EdDSA (③) ceremonies, safeId threaded.
-      this.createMpcRoot('ecdsaMpc', safeId, passphrase, enterprise),
-      this.createMpcRoot('eddsaMpc', safeId, passphrase, enterprise),
-    ]);
+      ecdsaMpc: () => this.createMpcRoot('ecdsaMpc', safeId, passphrase, enterprise),
+      eddsaMpc: () => this.createMpcRoot('eddsaMpc', safeId, passphrase, enterprise),
+    };
+    const results = await Promise.allSettled(slots.map((slot) => ceremonies[slot]()));
 
     // Single pass over the settled results: `status === 'fulfilled'` narrows `.value` to a
-    // RootKeyTriplet (no cast needed), and rejections are collected per-slot for the error below.
-    const hot = {} as SafeKeys['rootKeys']['hot'];
+    // RootKeyTriplet, and rejections are collected per-slot for the error below.
+    const hot: RootKeysByType = {};
     const failures: string[] = [];
     results.forEach((result, i) => {
       if (result.status === 'fulfilled') {
@@ -192,7 +201,7 @@ export class Safes implements ISafes {
   }
 
   /**
-   * Phase 3 — finalize a safe with the 12 root key ids as 4 ordered [user, backup, bitgo] triplets.
+   * Phase 3 — finalize a safe with the minted root key ids as ordered [user, backup, bitgo] triplets.
    * POST /api/v2/enterprise/:eId/safes/:safeId/finalize { rootKeys }.
    * Idempotent: re-finalizing with the same `rootKeys` returns the active safe again (200).
    * @experimental
diff --git a/modules/sdk-core/test/unit/bitgo/safe/safes.ts b/modules/sdk-core/test/unit/bitgo/safe/safes.ts
index 941c340265..9b466ce4da 100644
--- a/modules/sdk-core/test/unit/bitgo/safe/safes.ts
+++ b/modules/sdk-core/test/unit/bitgo/safe/safes.ts
@@ -1,6 +1,7 @@
 import * as sinon from 'sinon';
 import 'should';
-import { Enterprise, Safe, Safes } from '../../../../src';
+import { InitializeSafeResponse } from '@bitgo/public-types';
+import { Enterprise, Safe, SafeKeys, Safes } from '../../../../src';
 
 describe('Safes', function () {
   let safes: Safes;
@@ -40,6 +41,23 @@ describe('Safes', function () {
       sinon.assert.calledWith(mockBitGo.post, '/enterprise/test-enterprise-id/safes');
       sinon.assert.calledWith(send, { label: 'my safe' });
     });
+
+    it('decodes enabledRootSlots when the server returns them', async function () {
+      const initializeResponseWire = {
+        id: 'test-safe-id',
+        status: 'initializing',
+        enabledRootSlots: ['secp256k1Multisig', 'ecdsaMpc'],
+      };
+      const send = sinon.stub().returns({ result: sinon.stub().resolves(initializeResponseWire) });
+      mockBitGo.post.returns({ send });
+
+      const result = await safes.initializeSafe({ label: 'my safe' });
+
+      if (result.enabledRootSlots === undefined) {
+        throw new Error('expected enabledRootSlots');
+      }
+      result.enabledRootSlots.should.deepEqual(['secp256k1Multisig', 'ecdsaMpc']);
+    });
   });
 
   describe('createSafeKeys', function () {
@@ -164,6 +182,26 @@ describe('Safes', function () {
       started.should.equal(4);
     });
 
+    it('runs only the enabled ceremonies when enabledRootSlots is a subset', async function () {
+      const result = await safes.createSafeKeys({
+        label: 'my safe',
+        passphrase: 'pw',
+        safeId: 'safe-1',
+        enabledRootSlots: ['ecdsaMpc', 'eddsaMpc'],
+      });
+
+      result.should.deepEqual({
+        rootKeys: {
+          hot: {
+            ecdsaMpc: ['hteth-user', 'hteth-backup', 'hteth-bitgo'],
+            eddsaMpc: ['tsol-user', 'tsol-backup', 'tsol-bitgo'],
+          },
+        },
+      });
+      keychainsByCoin.should.not.have.property('tbtc');
+      keychainsByCoin.should.not.have.property('txlm');
+    });
+
     it('archives the safe and throws listing every failed ceremony', async function () {
       // Two ceremonies fail (an MPC and a multisig root).
       keychainsByCoin['hteth'] = makeKeychains('hteth');
@@ -236,9 +274,13 @@ describe('Safes', function () {
   });
 
   describe('generateSafe', function () {
-    it('chains initialize → createSafeKeys → finalize, threading the safeId', async function () {
-      const initializing = { id: 'test-safe-id', status: 'initializing' as const };
-      const rootKeys = { rootKeys: { hot: {} } } as any;
+    it('chains initialize → createSafeKeys → finalize, threading the safeId and enabledRootSlots', async function () {
+      const initializing: InitializeSafeResponse = {
+        id: 'test-safe-id',
+        status: 'initializing',
+        enabledRootSlots: ['ecdsaMpc', 'eddsaMpc'],
+      };
+      const rootKeys: SafeKeys = { rootKeys: { hot: {} } };
       const initStub = sinon.stub(safes, 'initializeSafe').resolves(initializing);
       const keysStub = sinon.stub(safes, 'createSafeKeys').resolves(rootKeys);
       const finalizeStub = sinon.stub(safes, 'finalizeSafe').resolves(new Safe(mockBitGo, safeDataWire as any));
@@ -246,7 +288,12 @@ describe('Safes', function () {
       const result = await safes.generateSafe({ label: 'my safe', passphrase: 'pw' });
 
       sinon.assert.calledWithMatch(initStub, { label: 'my safe' });
-      sinon.assert.calledWithMatch(keysStub, { label: 'my safe', passphrase: 'pw', safeId: 'test-safe-id' });
+      sinon.assert.calledWithMatch(keysStub, {
+        label: 'my safe',
+        passphrase: 'pw',
+        safeId: 'test-safe-id',
+        enabledRootSlots: ['ecdsaMpc', 'eddsaMpc'],
+      });
       sinon.assert.calledWith(finalizeStub, 'test-safe-id', rootKeys);
       sinon.assert.callOrder(initStub, keysStub, finalizeStub);
       result.status().should.equal('active');