diff --git a/src/webview/client.ts b/src/webview/client.ts
index af1c1c91..cbf565af 100644
--- a/src/webview/client.ts
+++ b/src/webview/client.ts
@@ -125,5 +125,23 @@ export const WebViewApi = () => {
           break;
       }
     },
+
+    signBotSignature: (appId: string, reloadPublicKey: boolean, method: string, path: string, body: string, callbackFunction: string) => {
+      switch (getMixinContext().platform) {
+        case 'iOS':
+          if (window.webkit && window.webkit.messageHandlers && window.webkit.messageHandlers.signBotSignature) {
+            window.webkit.messageHandlers.signBotSignature.postMessage([appId, reloadPublicKey, method, path, body, callbackFunction]);
+          }
+          break;
+        case 'Android':
+        case 'Desktop':
+          if (window.MixinContext && typeof window.MixinContext.signBotSignature === 'function') {
+            window.MixinContext.signBotSignature([appId, reloadPublicKey, method, path, body, callbackFunction]);
+          }
+          break;
+        default:
+          break;
+      }
+    },
   };
 };
diff --git a/src/webview/type.ts b/src/webview/type.ts
index ea6824ba..7c7bd951 100644
--- a/src/webview/type.ts
+++ b/src/webview/type.ts
@@ -25,6 +25,7 @@ export interface Messengers {
   getAssets: (assets: string[], globalCallBackFuncName: string) => void;
   getTipAddress: (chainId: string, globalCallBackFuncName: string) => void;
   tipSign: (chainId: string, message: string, globalCallBackFuncName: string) => void;
+  signBotSignature: (args: [string, boolean, string, string, string, string]) => void;
 }
 
 declare global {
@@ -37,7 +38,8 @@ declare global {
         close?: { postMessage: Messengers['close'] };
         getAssets?: { postMessage: ([params, globalCallBackFuncName]: [string[], string]) => void };
         getTipAddress?: { postMessage: ([chainId, globalCallBackFuncName]: [string, string]) => void };
-        tipSign?: { postMessage: ([chainId, message, globalCallBackFuncName]: [string, string, string]) => void };
+        tipSign?: { postMessage: ([chainId, message, globalCallBackFuncName]: [string, string, string]) => void };        
+        signBotSignature?: { postMessage: ([appId, reloadPublicKey, method, path, body, callbackFunctionName]: [string, boolean, string, string, string, string]) => void };
       };
     };
     MixinContext?: {
@@ -48,6 +50,7 @@ declare global {
       getAssets?: Messengers['getAssets'];
       getTipAddress?: Messengers['getTipAddress'];
       tipSign?: Messengers['tipSign'];
+      signBotSignature: Messengers['signBotSignature'];
     };
     assetsCallbackFunction?: (res: string) => void;
     tipAddressCallbackFunction?: (address: string) => void;