diff --git a/package.json b/package.json
index 9a6f8e4..9635171 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@ainize-team/ainize-js",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "main": "dist/ainize.js",
   "types": "dist/ainize.d.ts",
   "scripts": {
diff --git a/src/ain.ts b/src/ain.ts
index 7b1ef2a..f4c8835 100644
--- a/src/ain.ts
+++ b/src/ain.ts
@@ -4,6 +4,7 @@ import { TransactionBody } from "@ainblockchain/ain-util";
 import { txResult } from "./types/type";
 import { Signer } from "@ainblockchain/ain-js/lib/signer/signer";
 import { DefaultSigner } from "@ainblockchain/ain-js/lib/signer/default-signer"
+import { GetOptions } from "@ainblockchain/ain-js/lib/types";
 
 // NOTE(yoojin): Plz suggest a good name.
 export default class AinModule {
@@ -20,7 +21,7 @@ export default class AinModule {
   initAin(chainId: 0 | 1) {
     const blockchainAPIEndpoint = getBlockChainAPIEndpoint(chainId);
     const blockchainEventEndpoint = getBlockChainEventEndpoint(chainId);
-    this.ain = new Ain(blockchainAPIEndpoint,blockchainEventEndpoint, chainId);
+    this.ain = new Ain(blockchainAPIEndpoint, blockchainEventEndpoint, chainId);
   }
 
   createAccount() {
@@ -89,9 +90,9 @@ export default class AinModule {
     return await this.ain!.db.ref(balancePath).getValue();
   }
 
-  async getValue(path: string) {
+  async getValue(path: string, options?: GetOptions) {
     this.checkAinInitiated();
-    return await this.ain!.db.ref(path).getValue();
+    return await this.ain!.db.ref().getValue(path, options);
   }
 
   private async _sendTransaction(txBody: TransactionBody) {
diff --git a/src/ainize.ts b/src/ainize.ts
index d99bff0..ee765bd 100644
--- a/src/ainize.ts
+++ b/src/ainize.ts
@@ -107,7 +107,7 @@ export default class Ainize {
    */
   async getService(serviceName: string): Promise<Service> {
     const servicePath = Path.app(serviceName).root();
-    const serviceData = await this.ain.getValue(servicePath);
+    const serviceData = await this.ain.getValue(servicePath, { is_shallow: true });
     if(!serviceData) {
       throw new Error("Service not found");
     }
diff --git a/src/constants.ts b/src/constants.ts
index 91bc1d8..f96358f 100644
--- a/src/constants.ts
+++ b/src/constants.ts
@@ -22,10 +22,12 @@ export const Path = {
       service: () => `${Path.app(appName).root()}/service`,
       userOfService: (userAddress: string) => 
         `${Path.app(appName).service()}/${userAddress}`,
+      requestKey: (userAddress: string, requestKey: string) => 
+        `${Path.app(appName).userOfService(userAddress)}/${requestKey}`,
       request: (userAddress: string, requestKey: string) => 
-        `${Path.app(appName).userOfService(userAddress)}/${requestKey}/request`,
+        `${Path.app(appName).requestKey(userAddress, requestKey)}/request`,
       response: (userAddress: string, requestKey: string) => 
-        `${Path.app(appName).userOfService(userAddress)}/${requestKey}/response`,
+        `${Path.app(appName).requestKey(userAddress, requestKey)}/response`,
     }
   },
   transfer: (from: string, to: string, transferKey: string) => 
@@ -33,7 +35,6 @@ export const Path = {
 }
 
 export const defaultAppRules = (appName: string): { [type: string]: { ref: string, value: object } } => {
-  const rootRef = Path.app(appName).root();
   return {
     deposit: {
       ref: `${Path.app(appName).depositOfUser("$userAddress")}/$transferKey`,
@@ -54,7 +55,7 @@ export const defaultAppRules = (appName: string): { [type: string]: { ref: strin
       },
     },
     balanceHistory: {
-      ref: `${rootRef}/balance/$userAddress/history/$timestamp`,
+      ref: `${Path.app(appName).balance()}/$userAddress/history/$timestamp`,
       value: {
         ".rule": {
           write: 
@@ -64,6 +65,17 @@ export const defaultAppRules = (appName: string): { [type: string]: { ref: strin
         },
       },
     },
+    requestKey: {
+      ref: Path.app(appName).requestKey("$userAddress", "$requestKey"),
+      value: {
+        ".rule": {
+          state: {
+            gc_max_siblings: 20,
+            gc_num_siblings_deleted: 10,
+          },
+        },
+      }
+    },
     request: {
       ref: Path.app(appName).request("$userAddress", "$requestKey"),
       value: {
@@ -77,7 +89,7 @@ export const defaultAppRules = (appName: string): { [type: string]: { ref: strin
       },
     },
     response: {
-      ref: Path.app(appName).response("userAddress", "$requestKey"),
+      ref: Path.app(appName).response("$userAddress", "$requestKey"),
       value: {
         ".rule": {
           write: "util.isAppAdmin(`" + `${appName}` + "`, auth.addr, getValue) === true && util.isDict(newData) && util.isString(newData.status)"