diff --git a/packages/core/src/StarknetWindowObject.ts b/packages/core/src/StarknetWindowObject.ts
index ca6b002..8a4c4d4 100644
--- a/packages/core/src/StarknetWindowObject.ts
+++ b/packages/core/src/StarknetWindowObject.ts
@@ -55,6 +55,14 @@ export interface SwitchStarknetChainParameter {
   chainId: string // A 0x-prefixed hexadecimal string
 }
 
+// SNIP: https://community.starknet.io/t/snip-deployment-interface-between-dapps-and-wallets/101923
+interface GetDeploymentDataResult {
+  address: string // Represented as 'felt252'
+  class_hash: string // Represented as 'felt252'
+  salt: string // Represented as 'felt252'
+  calldata: string[] // Array of 'felt252', length := calldata_len
+}
+
 export type RpcMessage =
   | {
       type: "wallet_watchAsset"
@@ -71,6 +79,11 @@ export type RpcMessage =
       params: SwitchStarknetChainParameter
       result: boolean
     }
+  | {
+      type: "wallet_deploymentData"
+      params: never
+      result: GetDeploymentDataResult
+    }
 
 export interface IStarknetWindowObject {
   id: string