diff --git a/src/contract/ContractProvider.ts b/src/contract/ContractProvider.ts
index f359bbb..596c030 100644
--- a/src/contract/ContractProvider.ts
+++ b/src/contract/ContractProvider.ts
@@ -13,6 +13,7 @@ import { TupleItem } from "../tuple/tuple";
 import { Maybe } from "../utils/maybe";
 import { ContractState } from "./ContractState";
 import { Sender } from './Sender';
+import { Contract } from './Contract';
 
 export type ContractGetMethodResult = {
     stack: TupleReader;
@@ -25,4 +26,12 @@ export interface ContractProvider {
     get(name: string, args: TupleItem[]): Promise<ContractGetMethodResult>;
     external(message: Cell): Promise<void>;
     internal(via: Sender, args: { value: bigint | string, bounce?: Maybe<boolean>, sendMode?: SendMode, body?: Maybe<Cell | string> }): Promise<void>;
+}
+
+export interface ReopenableContractProvider extends ContractProvider {
+    reopenFor(contract: Contract): ContractProvider;
+}
+
+export function isReopenableContractProvider(provider: ContractProvider): provider is ReopenableContractProvider {
+    return !!(provider as ReopenableContractProvider)['reopenFor'];
 }
\ No newline at end of file
diff --git a/src/index.ts b/src/index.ts
index a418d53..9946937 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -49,7 +49,9 @@ export * from './types/_export';
 export { Contract } from './contract/Contract';
 export {
     ContractProvider,
-    ContractGetMethodResult
+    ContractGetMethodResult,
+    ReopenableContractProvider,
+    isReopenableContractProvider
 } from './contract/ContractProvider';
 export { ContractState } from './contract/ContractState';
 export { Sender, SenderArguments } from './contract/Sender';