diff --git a/app/scripts/controllers/permissions/background-api.test.js b/app/scripts/controllers/permissions/background-api.test.js
index 3deca2135f68..babfee85ce49 100644
--- a/app/scripts/controllers/permissions/background-api.test.js
+++ b/app/scripts/controllers/permissions/background-api.test.js
@@ -137,6 +137,26 @@ describe('permission background API methods', () => {
                 'eip155:1:0x4',
               ],
             },
+            'wallet:eip155': {
+              methods: [],
+              notifications: [],
+              accounts: [
+                'wallet:eip155:0x2',
+                'wallet:eip155:0x3',
+                'wallet:eip155:0x1',
+                'wallet:eip155:0x4',
+              ],
+            },
+            wallet: {
+              methods: [],
+              notifications: [],
+              accounts: [
+                'wallet:eip155:0x2',
+                'wallet:eip155:0x3',
+                'wallet:eip155:0x1',
+                'wallet:eip155:0x4',
+              ],
+            },
           },
           isMultichainOrigin: true,
         },
@@ -267,6 +287,28 @@ describe('permission background API methods', () => {
                 'eip155:1:0x5',
               ],
             },
+            'wallet:eip155': {
+              methods: [],
+              notifications: [],
+              accounts: [
+                'wallet:eip155:0x2',
+                'wallet:eip155:0x3',
+                'wallet:eip155:0x1',
+                'wallet:eip155:0x4',
+                'wallet:eip155:0x5',
+              ],
+            },
+            wallet: {
+              methods: [],
+              notifications: [],
+              accounts: [
+                'wallet:eip155:0x2',
+                'wallet:eip155:0x3',
+                'wallet:eip155:0x1',
+                'wallet:eip155:0x4',
+                'wallet:eip155:0x5',
+              ],
+            },
           },
           isMultichainOrigin: true,
         },
@@ -462,6 +504,16 @@ describe('permission background API methods', () => {
               notifications: [],
               accounts: ['eip155:1:0x3', 'eip155:1:0x1'],
             },
+            'wallet:eip155': {
+              methods: [],
+              notifications: [],
+              accounts: ['wallet:eip155:0x3', 'wallet:eip155:0x1'],
+            },
+            wallet: {
+              methods: [],
+              notifications: [],
+              accounts: ['wallet:eip155:0x3', 'wallet:eip155:0x1'],
+            },
           },
           isMultichainOrigin: true,
         },
@@ -549,6 +601,16 @@ describe('permission background API methods', () => {
                       notifications: KnownNotifications.eip155,
                       accounts: ['eip155:5:0xdeadbeef'],
                     },
+                    'wallet:eip155': {
+                      methods: [],
+                      notifications: [],
+                      accounts: ['wallet:eip155:0xdeadbeef'],
+                    },
+                    wallet: {
+                      methods: [],
+                      notifications: [],
+                      accounts: ['wallet:eip155:0xdeadbeef'],
+                    },
                   },
                   isMultichainOrigin: false,
                 },
@@ -670,6 +732,16 @@ describe('permission background API methods', () => {
               notifications: KnownNotifications.eip155,
               accounts: ['eip155:1337:0x1', 'eip155:1337:0x2'],
             },
+            'wallet:eip155': {
+              methods: [],
+              notifications: [],
+              accounts: ['wallet:eip155:0x1', 'wallet:eip155:0x2'],
+            },
+            wallet: {
+              methods: [],
+              notifications: [],
+              accounts: ['wallet:eip155:0x1', 'wallet:eip155:0x2'],
+            },
           },
           isMultichainOrigin: true,
         },
@@ -792,6 +864,16 @@ describe('permission background API methods', () => {
               notifications: KnownNotifications.eip155,
               accounts: ['eip155:5:0x1', 'eip155:5:0x2'],
             },
+            'wallet:eip155': {
+              methods: [],
+              notifications: [],
+              accounts: ['wallet:eip155:0x1', 'wallet:eip155:0x2'],
+            },
+            wallet: {
+              methods: [],
+              notifications: [],
+              accounts: ['wallet:eip155:0x1', 'wallet:eip155:0x2'],
+            },
           },
           isMultichainOrigin: true,
         },
diff --git a/app/scripts/lib/multichain-api/adapters/caip-permission-adapter-permittedChains.test.ts b/app/scripts/lib/multichain-api/adapters/caip-permission-adapter-permittedChains.test.ts
index aa125193ce95..8fe89acacc2f 100644
--- a/app/scripts/lib/multichain-api/adapters/caip-permission-adapter-permittedChains.test.ts
+++ b/app/scripts/lib/multichain-api/adapters/caip-permission-adapter-permittedChains.test.ts
@@ -69,6 +69,10 @@ describe('CAIP-25 permittedChains adapters', () => {
               notifications: [],
               accounts: ['eip155:100:0x100'],
             },
+            'wallet:eip155': {
+              methods: [],
+              notifications: [],
+            },
           },
           isMultichainOrigin: false,
         },
@@ -94,6 +98,60 @@ describe('CAIP-25 permittedChains adapters', () => {
             notifications: KnownNotifications.eip155,
             accounts: [],
           },
+          'wallet:eip155': {
+            methods: [],
+            notifications: [],
+          },
+        },
+        isMultichainOrigin: false,
+      });
+    });
+
+    it('adds an optional scope for "wallet:eip155" if it does not already exist in the optional scopes', () => {
+      const result = addPermittedEthChainId(
+        {
+          requiredScopes: {
+            'eip155:1': {
+              methods: [],
+              notifications: [],
+              accounts: ['eip155:1:0x1', 'eip155:1:0x2'],
+            },
+          },
+          optionalScopes: {
+            'eip155:100': {
+              methods: [],
+              notifications: [],
+              accounts: ['eip155:100:0x100'],
+            },
+          },
+          isMultichainOrigin: false,
+        },
+        '0x65',
+      );
+
+      expect(result).toStrictEqual({
+        requiredScopes: {
+          'eip155:1': {
+            methods: [],
+            notifications: [],
+            accounts: ['eip155:1:0x1', 'eip155:1:0x2'],
+          },
+        },
+        optionalScopes: {
+          'eip155:100': {
+            methods: [],
+            notifications: [],
+            accounts: ['eip155:100:0x100'],
+          },
+          'eip155:101': {
+            methods: KnownRpcMethods.eip155,
+            notifications: KnownNotifications.eip155,
+            accounts: [],
+          },
+          'wallet:eip155': {
+            methods: [],
+            notifications: [],
+          },
         },
         isMultichainOrigin: false,
       });
@@ -277,6 +335,10 @@ describe('CAIP-25 permittedChains adapters', () => {
             notifications: KnownNotifications.eip155,
             accounts: [],
           },
+          'wallet:eip155': {
+            methods: [],
+            notifications: [],
+          },
         },
         isMultichainOrigin: false,
       });
diff --git a/app/scripts/lib/multichain-api/adapters/caip-permission-adapter-permittedChains.ts b/app/scripts/lib/multichain-api/adapters/caip-permission-adapter-permittedChains.ts
index 8e840c6c327e..b08d86d2f764 100644
--- a/app/scripts/lib/multichain-api/adapters/caip-permission-adapter-permittedChains.ts
+++ b/app/scripts/lib/multichain-api/adapters/caip-permission-adapter-permittedChains.ts
@@ -44,6 +44,10 @@ export const addPermittedEthChainId = (
   return {
     ...caip25CaveatValue,
     optionalScopes: {
+      'wallet:eip155': {
+        methods: [],
+        notifications: [],
+      },
       ...caip25CaveatValue.optionalScopes,
       [scopeString]: {
         methods: KnownRpcMethods.eip155,
diff --git a/app/scripts/lib/multichain-api/caip25permissions.test.ts b/app/scripts/lib/multichain-api/caip25permissions.test.ts
index 97fce8f631d6..129003f8aefe 100644
--- a/app/scripts/lib/multichain-api/caip25permissions.test.ts
+++ b/app/scripts/lib/multichain-api/caip25permissions.test.ts
@@ -2,7 +2,6 @@ import {
   CaveatConstraint,
   CaveatMutatorOperation,
   PermissionType,
-  SubjectType,
 } from '@metamask/permission-controller';
 import { NonEmptyArray } from '@metamask/controller-utils';
 import * as Scope from './scope';
@@ -46,7 +45,6 @@ describe('endowment:caip25', () => {
       targetName: Caip25EndowmentPermissionName,
       endowmentGetter: expect.any(Function),
       allowedCaveats: [Caip25CaveatType],
-      subjectTypes: [SubjectType.Website],
       validator: expect.any(Function),
     });
 
diff --git a/app/scripts/lib/multichain-api/wallet-createSession/handler.test.js b/app/scripts/lib/multichain-api/wallet-createSession/handler.test.js
index 345ab09e0154..ce2870378aa7 100644
--- a/app/scripts/lib/multichain-api/wallet-createSession/handler.test.js
+++ b/app/scripts/lib/multichain-api/wallet-createSession/handler.test.js
@@ -510,6 +510,16 @@ describe('wallet_createSession', () => {
                     notifications: KnownNotifications.eip155,
                     accounts: ['eip155:1337:0x1', 'eip155:1337:0x2'],
                   },
+                  'wallet:eip155': {
+                    methods: [],
+                    notifications: [],
+                    accounts: ['wallet:eip155:0x1', 'wallet:eip155:0x2'],
+                  },
+                  wallet: {
+                    methods: [],
+                    notifications: [],
+                    accounts: ['wallet:eip155:0x1', 'wallet:eip155:0x2'],
+                  },
                 },
                 isMultichainOrigin: true,
               },
@@ -608,6 +618,16 @@ describe('wallet_createSession', () => {
           notifications: ['chainChanged'],
           accounts: ['eip155:100:0x1', 'eip155:100:0x2'],
         },
+        'wallet:eip155': {
+          methods: [],
+          notifications: [],
+          accounts: ['wallet:eip155:0x1', 'wallet:eip155:0x2'],
+        },
+        wallet: {
+          methods: [],
+          notifications: [],
+          accounts: ['wallet:eip155:0x1', 'wallet:eip155:0x2'],
+        },
       },
     });
   });
diff --git a/yarn.lock b/yarn.lock
index ccfa5fd86c2c..82c0a9b0f85a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4177,20 +4177,13 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@json-schema-tools/traverse@npm:^1.10.4":
+"@json-schema-tools/traverse@npm:^1.10.4, @json-schema-tools/traverse@npm:^1.7.5, @json-schema-tools/traverse@npm:^1.7.8":
   version: 1.10.4
   resolution: "@json-schema-tools/traverse@npm:1.10.4"
   checksum: 10/0027bc90df01c5eeee0833e722b7320b53be8b5ce3f4e0e4a6e45713a38e6f88f21aba31e3dd973093ef75cd21a40c07fe8f112da8f49a7919b1c0e44c904d20
   languageName: node
   linkType: hard
 
-"@json-schema-tools/traverse@npm:^1.7.5, @json-schema-tools/traverse@npm:^1.7.8":
-  version: 1.10.3
-  resolution: "@json-schema-tools/traverse@npm:1.10.3"
-  checksum: 10/690623740d223ea373d8e561dad5c70bf86461bcedc5fc45da01c87bcdf3284bbdbad3006d4a423f8d82e4b2d4580e45f92c0b272f006024fb597d7f01876215
-  languageName: node
-  linkType: hard
-
 "@juggle/resize-observer@npm:^3.3.1":
   version: 3.4.0
   resolution: "@juggle/resize-observer@npm:3.4.0"