diff --git a/apps/ios/Tests/GatewayConnectionControllerTests.swift b/apps/ios/Tests/GatewayConnectionControllerTests.swift
index 3c140a0ab36f..30480f89638b 100644
--- a/apps/ios/Tests/GatewayConnectionControllerTests.swift
+++ b/apps/ios/Tests/GatewayConnectionControllerTests.swift
@@ -1913,6 +1913,66 @@ private func waitUntil(
         }
     }
 
+    @Test @MainActor func `share relay keeps credentials out of app group defaults`() throws {
+        let registryIsolation = GatewayRegistryTestIsolation()
+        defer { registryIsolation.restore() }
+        let token = "relay-token-\(UUID().uuidString)"
+        let password = "relay-password-\(UUID().uuidString)"
+
+        #expect(ShareGatewayRelaySettings.saveConfig(ShareGatewayRelayConfig(
+            gatewayURLString: "wss://secure-relay.example.com",
+            gatewayStableID: "manual|secure-relay.example.com|443",
+            token: token,
+            password: password,
+            sessionKey: "main")))
+
+        let defaults = try #require(UserDefaults(suiteName: OpenClawAppGroup.identifier))
+        let persisted = try #require(defaults.data(forKey: "share.gatewayRelay.config.v1"))
+        #expect(persisted.range(of: Data(token.utf8)) == nil)
+        #expect(persisted.range(of: Data(password.utf8)) == nil)
+        let loaded = try #require(ShareGatewayRelaySettings.loadConfig())
+        #expect(loaded.token == token)
+        #expect(loaded.password == password)
+
+        let otherRelay = ShareGatewayRelayConfig(
+            gatewayURLString: "wss://other-relay.example.com",
+            gatewayStableID: "manual|other-relay.example.com|443",
+            token: nil,
+            password: nil,
+            sessionKey: "main")
+        defaults.set(try JSONEncoder().encode(otherRelay), forKey: "share.gatewayRelay.config.v1")
+        let mismatched = try #require(ShareGatewayRelaySettings.loadConfig())
+        #expect(mismatched.token == nil)
+        #expect(mismatched.password == nil)
+    }
+
+    @Test @MainActor func `share relay migrates legacy defaults credentials into keychain`() throws {
+        let registryIsolation = GatewayRegistryTestIsolation()
+        defer { registryIsolation.restore() }
+        let token = "legacy-token-\(UUID().uuidString)"
+        let password = "legacy-password-\(UUID().uuidString)"
+        let defaults = try #require(UserDefaults(suiteName: OpenClawAppGroup.identifier))
+        let legacy = try JSONSerialization.data(withJSONObject: [
+            "gatewayURLString": "wss://legacy-relay.example.com",
+            "gatewayStableID": "manual|legacy-relay.example.com|443",
+            "token": token,
+            "password": password,
+            "sessionKey": "main",
+        ])
+        defaults.set(legacy, forKey: "share.gatewayRelay.config.v1")
+
+        let loaded = try #require(ShareGatewayRelaySettings.loadConfig())
+
+        #expect(loaded.token == token)
+        #expect(loaded.password == password)
+        let migrated = try #require(defaults.data(forKey: "share.gatewayRelay.config.v1"))
+        #expect(migrated.range(of: Data(token.utf8)) == nil)
+        #expect(migrated.range(of: Data(password.utf8)) == nil)
+        let reloaded = try #require(ShareGatewayRelaySettings.loadConfig())
+        #expect(reloaded.token == token)
+        #expect(reloaded.password == password)
+    }
+
     @Test @MainActor func `forget gateway clears matching share relay only`() async {
         let registryIsolation = GatewayRegistryTestIsolation()
         defer { registryIsolation.restore() }
diff --git a/apps/shared/OpenClawKit/Sources/OpenClawKit/GenericPasswordKeychainStore.swift b/apps/shared/OpenClawKit/Sources/OpenClawKit/GenericPasswordKeychainStore.swift
index 54657fa1d1e0..63e9d6535092 100644
--- a/apps/shared/OpenClawKit/Sources/OpenClawKit/GenericPasswordKeychainStore.swift
+++ b/apps/shared/OpenClawKit/Sources/OpenClawKit/GenericPasswordKeychainStore.swift
@@ -24,8 +24,12 @@ public enum GenericPasswordKeychainStore {
         }
     }
 
-    public static func loadString(service: String, account: String) -> String? {
-        guard let data = self.loadData(service: service, account: account) else { return nil }
+    public static func loadString(
+        service: String,
+        account: String,
+        accessGroup: String? = nil) -> String?
+    {
+        guard let data = self.loadData(service: service, account: account, accessGroup: accessGroup) else { return nil }
         return String(data: data, encoding: .utf8)
     }
 
@@ -34,9 +38,16 @@ public enum GenericPasswordKeychainStore {
         _ value: String,
         service: String,
         account: String,
+        accessGroup: String? = nil,
         accessible: CFString = kSecAttrAccessibleAfterFirstUnlockThisDeviceOnly) -> Bool
     {
-        switch self.saveStringResult(value, service: service, account: account, accessible: accessible) {
+        switch self.saveStringResult(
+            value,
+            service: service,
+            account: account,
+            accessGroup: accessGroup,
+            accessible: accessible)
+        {
         case .success: true
         case .failure: false
         }
@@ -46,6 +57,7 @@ public enum GenericPasswordKeychainStore {
         _ value: String,
         service: String,
         account: String,
+        accessGroup: String? = nil,
         accessible: CFString = kSecAttrAccessibleAfterFirstUnlockThisDeviceOnly)
         -> Result<Void, MutationError>
     {
@@ -53,14 +65,19 @@ public enum GenericPasswordKeychainStore {
             Data(value.utf8),
             service: service,
             account: account,
+            accessGroup: accessGroup,
             accessible: accessible,
             updateItem: { SecItemUpdate($0, $1) },
             addItem: { SecItemAdd($0, nil) })
     }
 
     @discardableResult
-    public static func delete(service: String, account: String) -> Bool {
-        switch self.deleteResult(service: service, account: account) {
+    public static func delete(
+        service: String,
+        account: String,
+        accessGroup: String? = nil) -> Bool
+    {
+        switch self.deleteResult(service: service, account: account, accessGroup: accessGroup) {
         case .success: true
         case .failure: false
         }
@@ -68,11 +85,13 @@ public enum GenericPasswordKeychainStore {
 
     public static func deleteResult(
         service: String,
-        account: String) -> Result<Void, MutationError>
+        account: String,
+        accessGroup: String? = nil) -> Result<Void, MutationError>
     {
         self.deleteResult(
             service: service,
             account: account,
+            accessGroup: accessGroup,
             deleteItem: { SecItemDelete($0) })
     }
 
@@ -86,8 +105,8 @@ public enum GenericPasswordKeychainStore {
         return status == errSecSuccess || status == errSecItemNotFound
     }
 
-    private static func loadData(service: String, account: String) -> Data? {
-        var query = self.baseQuery(service: service, account: account)
+    private static func loadData(service: String, account: String, accessGroup: String?) -> Data? {
+        var query = self.baseQuery(service: service, account: account, accessGroup: accessGroup)
         query[kSecReturnData as String] = true
         query[kSecMatchLimit as String] = kSecMatchLimitOne
 
@@ -101,11 +120,12 @@ public enum GenericPasswordKeychainStore {
         _ data: Data,
         service: String,
         account: String,
+        accessGroup: String? = nil,
         accessible: CFString,
         updateItem: (CFDictionary, CFDictionary) -> OSStatus,
         addItem: (CFDictionary) -> OSStatus) -> Result<Void, MutationError>
     {
-        let query = self.baseQuery(service: service, account: account)
+        let query = self.baseQuery(service: service, account: account, accessGroup: accessGroup)
         let updates: [String: Any] = [
             kSecValueData as String: data,
             kSecAttrAccessible as String: accessible,
@@ -141,20 +161,32 @@ public enum GenericPasswordKeychainStore {
     static func deleteResult(
         service: String,
         account: String,
+        accessGroup: String? = nil,
         deleteItem: (CFDictionary) -> OSStatus) -> Result<Void, MutationError>
     {
-        let status = deleteItem(self.baseQuery(service: service, account: account) as CFDictionary)
+        let status = deleteItem(self.baseQuery(
+            service: service,
+            account: account,
+            accessGroup: accessGroup) as CFDictionary)
         guard status != errSecSuccess, status != errSecItemNotFound else {
             return .success(())
         }
         return .failure(MutationError(operation: .delete, status: status))
     }
 
-    private static func baseQuery(service: String, account: String) -> [String: Any] {
-        [
+    private static func baseQuery(
+        service: String,
+        account: String,
+        accessGroup: String?) -> [String: Any]
+    {
+        var query: [String: Any] = [
             kSecClass as String: kSecClassGenericPassword,
             kSecAttrService as String: service,
             kSecAttrAccount as String: account,
         ]
+        if let accessGroup {
+            query[kSecAttrAccessGroup as String] = accessGroup
+        }
+        return query
     }
 }
diff --git a/apps/shared/OpenClawKit/Sources/OpenClawKit/ShareGatewayRelaySettings.swift b/apps/shared/OpenClawKit/Sources/OpenClawKit/ShareGatewayRelaySettings.swift
index f7489b4cfb2c..bab9f91cf23f 100644
--- a/apps/shared/OpenClawKit/Sources/OpenClawKit/ShareGatewayRelaySettings.swift
+++ b/apps/shared/OpenClawKit/Sources/OpenClawKit/ShareGatewayRelaySettings.swift
@@ -34,15 +34,51 @@ public enum ShareGatewayRelaySettings {
     }
 
     private static let relayConfigKey = "share.gatewayRelay.config.v1"
+    // On iOS an App Group is also a Keychain access group. Reuse the existing
+    // group so the host and extension share only this credential bundle.
+    private static let relayCredentialService = "ai.openclawfoundation.app.share-gateway-relay"
+    private static let relayCredentialAccount = "credentials.v1"
     private static let lastEventKey = "share.gatewayRelay.event.v1"
 
     private static var defaults: UserDefaults {
         UserDefaults(suiteName: self.suiteName) ?? .standard
     }
 
+    private static var isAppExtension: Bool {
+        Bundle.main.object(forInfoDictionaryKey: "NSExtension") != nil
+    }
+
     public static func loadConfig() -> ShareGatewayRelayConfig? {
         guard let data = self.defaults.data(forKey: self.relayConfigKey) else { return nil }
-        return try? JSONDecoder().decode(ShareGatewayRelayConfig.self, from: data)
+        guard let config = try? JSONDecoder().decode(ShareGatewayRelayConfig.self, from: data) else { return nil }
+        if config.token != nil || config.password != nil {
+            return self.resolveLegacyConfig(
+                config,
+                isAppExtension: self.isAppExtension,
+                migrate: { config in
+                    self.commitConfig(
+                        config,
+                        saveCredentials: self.saveCredentials,
+                        saveMetadata: self.saveMetadata)
+                },
+                discard: {
+                    self.defaults.removeObject(forKey: self.relayConfigKey)
+                    self.saveLastEvent("Share unavailable after upgrade: open OpenClaw to reconnect securely.")
+                })
+        }
+        // Keep relay identity in the Keychain bundle with its secrets. A partial
+        // route update must never bind one gateway's credentials to another.
+        let credentials = self.loadCredentials().flatMap { stored in
+            self.credentials(stored, match: config) ? stored : nil
+        }
+        return ShareGatewayRelayConfig(
+            gatewayURLString: config.gatewayURLString,
+            gatewayStableID: config.gatewayStableID,
+            token: credentials?.token,
+            password: credentials?.password,
+            sessionKey: config.sessionKey,
+            deliveryChannel: config.deliveryChannel,
+            deliveryTo: config.deliveryTo)
     }
 
     /// An endpoint is not a gateway identity. If the extension launches before the
@@ -61,13 +97,23 @@ public enum ShareGatewayRelaySettings {
         return config
     }
 
-    public static func saveConfig(_ config: ShareGatewayRelayConfig) {
-        guard let data = try? JSONEncoder().encode(config) else { return }
-        self.defaults.set(data, forKey: self.relayConfigKey)
+    @discardableResult
+    public static func saveConfig(_ config: ShareGatewayRelayConfig) -> Bool {
+        let saved = self.commitConfig(
+            config,
+            saveCredentials: self.saveCredentials,
+            saveMetadata: self.saveMetadata)
+        guard saved else {
+            self.defaults.removeObject(forKey: self.relayConfigKey)
+            self.saveLastEvent("Share unavailable: reconnect OpenClaw to save gateway access securely.")
+            return false
+        }
+        return true
     }
 
     public static func clearConfig() {
         self.defaults.removeObject(forKey: self.relayConfigKey)
+        _ = self.deleteCredentials()
     }
 
     public static func saveLastEvent(_ message: String) {
@@ -81,4 +127,88 @@ public enum ShareGatewayRelaySettings {
             .trimmingCharacters(in: .whitespacesAndNewlines) ?? ""
         return value.isEmpty ? nil : value
     }
+
+    private static func saveMetadata(_ config: ShareGatewayRelayConfig) {
+        let metadata = ShareGatewayRelayConfig(
+            gatewayURLString: config.gatewayURLString,
+            gatewayStableID: config.gatewayStableID,
+            token: nil,
+            password: nil,
+            sessionKey: config.sessionKey,
+            deliveryChannel: config.deliveryChannel,
+            deliveryTo: config.deliveryTo)
+        guard let data = try? JSONEncoder().encode(metadata) else { return }
+        self.defaults.set(data, forKey: self.relayConfigKey)
+    }
+
+    static func commitConfig(
+        _ config: ShareGatewayRelayConfig,
+        saveCredentials: (ShareGatewayRelayConfig) -> Bool,
+        saveMetadata: (ShareGatewayRelayConfig) -> Void) -> Bool
+    {
+        guard saveCredentials(config) else { return false }
+        saveMetadata(config)
+        return true
+    }
+
+    static func resolveLegacyConfig(
+        _ config: ShareGatewayRelayConfig,
+        isAppExtension: Bool,
+        migrate: (ShareGatewayRelayConfig) -> Bool,
+        discard: () -> Void) -> ShareGatewayRelayConfig?
+    {
+        // Only the host may create shared credentials. An extension-first upgrade
+        // or failed Keychain write must scrub and reject the legacy auth record.
+        guard !isAppExtension, migrate(config) else {
+            discard()
+            return nil
+        }
+        return config
+    }
+
+    private static func loadCredentials() -> ShareGatewayRelayConfig? {
+        guard let json = GenericPasswordKeychainStore.loadString(
+            service: self.relayCredentialService,
+            account: self.relayCredentialAccount,
+            accessGroup: self.suiteName),
+            let data = json.data(using: .utf8),
+            let credentials = try? JSONDecoder().decode(ShareGatewayRelayConfig.self, from: data)
+        else { return nil }
+        return credentials
+    }
+
+    private static func saveCredentials(_ config: ShareGatewayRelayConfig) -> Bool {
+        guard config.token != nil || config.password != nil else {
+            return self.deleteCredentials()
+        }
+        guard let data = try? JSONEncoder().encode(config),
+              let json = String(data: data, encoding: .utf8),
+              GenericPasswordKeychainStore.saveString(
+                  json,
+                  service: self.relayCredentialService,
+                  account: self.relayCredentialAccount,
+                  accessGroup: self.suiteName)
+        else {
+            return false
+        }
+        return true
+    }
+
+    private static func deleteCredentials() -> Bool {
+        GenericPasswordKeychainStore.delete(
+            service: self.relayCredentialService,
+            account: self.relayCredentialAccount,
+            accessGroup: self.suiteName)
+    }
+
+    private static func credentials(
+        _ credentials: ShareGatewayRelayConfig,
+        match metadata: ShareGatewayRelayConfig) -> Bool
+    {
+        if let stableID = metadata.gatewayStableID, !stableID.isEmpty {
+            return credentials.gatewayStableID == stableID
+        }
+        return credentials.gatewayStableID?.isEmpty != false &&
+            credentials.gatewayURLString == metadata.gatewayURLString
+    }
 }
diff --git a/apps/shared/OpenClawKit/Tests/OpenClawKitTests/GenericPasswordKeychainStoreTests.swift b/apps/shared/OpenClawKit/Tests/OpenClawKitTests/GenericPasswordKeychainStoreTests.swift
index 6cfbd77fd031..61d7e9a9755d 100644
--- a/apps/shared/OpenClawKit/Tests/OpenClawKitTests/GenericPasswordKeychainStoreTests.swift
+++ b/apps/shared/OpenClawKit/Tests/OpenClawKitTests/GenericPasswordKeychainStoreTests.swift
@@ -51,6 +51,34 @@ struct GenericPasswordKeychainStoreTests {
         #expect(addCalls == 1)
     }
 
+    @Test func `shared access group scopes keychain mutation queries`() {
+        let accessGroup = "group.ai.openclawfoundation.app.shared"
+        var updateQuery: [String: Any] = [:]
+        var addQuery: [String: Any] = [:]
+
+        let result = GenericPasswordKeychainStore.saveDataResult(
+            Data("shared-value".utf8),
+            service: "test-service",
+            account: "test-account",
+            accessGroup: accessGroup,
+            accessible: kSecAttrAccessibleAfterFirstUnlockThisDeviceOnly,
+            updateItem: { query, _ in
+                updateQuery = query as? [String: Any] ?? [:]
+                return errSecItemNotFound
+            },
+            addItem: { query in
+                addQuery = query as? [String: Any] ?? [:]
+                return errSecSuccess
+            })
+
+        guard case .success = result else {
+            Issue.record("expected shared keychain add to succeed")
+            return
+        }
+        #expect(updateQuery[kSecAttrAccessGroup as String] as? String == accessGroup)
+        #expect(addQuery[kSecAttrAccessGroup as String] as? String == accessGroup)
+    }
+
     @Test func `add race retries atomic update`() {
         var updateCalls = 0
 
diff --git a/apps/shared/OpenClawKit/Tests/OpenClawKitTests/ShareGatewayRelaySettingsTests.swift b/apps/shared/OpenClawKit/Tests/OpenClawKitTests/ShareGatewayRelaySettingsTests.swift
new file mode 100644
index 000000000000..246c04eed96c
--- /dev/null
+++ b/apps/shared/OpenClawKit/Tests/OpenClawKitTests/ShareGatewayRelaySettingsTests.swift
@@ -0,0 +1,87 @@
+import Testing
+@testable import OpenClawKit
+
+struct ShareGatewayRelaySettingsTests {
+    private let config = ShareGatewayRelayConfig(
+        gatewayURLString: "wss://relay.example.com",
+        gatewayStableID: "manual|relay.example.com|443",
+        token: "token",
+        password: "password",
+        sessionKey: "main")
+
+    @Test func `failed credential persistence leaves metadata unchanged`() {
+        var metadataWrites = 0
+
+        let saved = ShareGatewayRelaySettings.commitConfig(
+            self.config,
+            saveCredentials: { _ in false },
+            saveMetadata: { _ in metadataWrites += 1 })
+
+        #expect(!saved)
+        #expect(metadataWrites == 0)
+    }
+
+    @Test func `successful credential persistence commits metadata once`() {
+        var metadataWrites = 0
+
+        let saved = ShareGatewayRelaySettings.commitConfig(
+            self.config,
+            saveCredentials: { _ in true },
+            saveMetadata: { _ in metadataWrites += 1 })
+
+        #expect(saved)
+        #expect(metadataWrites == 1)
+    }
+
+    @Test func `extension-first upgrade discards and rejects legacy credentials`() {
+        var migrations = 0
+        var discards = 0
+
+        let resolved = ShareGatewayRelaySettings.resolveLegacyConfig(
+            self.config,
+            isAppExtension: true,
+            migrate: { _ in
+                migrations += 1
+                return true
+            },
+            discard: { discards += 1 })
+
+        #expect(resolved == nil)
+        #expect(migrations == 0)
+        #expect(discards == 1)
+    }
+
+    @Test func `host app owns legacy migration`() {
+        var migrated: ShareGatewayRelayConfig?
+        var discards = 0
+
+        let resolved = ShareGatewayRelaySettings.resolveLegacyConfig(
+            self.config,
+            isAppExtension: false,
+            migrate: { config in
+                migrated = config
+                return true
+            },
+            discard: { discards += 1 })
+
+        #expect(resolved == self.config)
+        #expect(migrated == self.config)
+        #expect(discards == 0)
+    }
+
+    @Test func `failed host migration discards and rejects legacy credentials`() {
+        var calls: [String] = []
+
+        let resolved = ShareGatewayRelaySettings.resolveLegacyConfig(
+            self.config,
+            isAppExtension: false,
+            migrate: { _ in
+                calls.append("migrate")
+                return false
+            },
+            discard: { calls.append("discard") })
+
+        #expect(resolved == nil)
+        #expect(calls == ["migrate", "discard"])
+    }
+}