Feat/rpc paymaster

README.md

@@ -203,12 +203,13 @@ const sessionAccount = await buildSessionAccount({
   session,
   sessionKey,
   provider: new RpcProvider({
-    nodeUrl: "https://starknet-sepolia.public.blastapi.io/rpc/v0_7",
+    nodeUrl: "https://starknet-sepolia.public.blastapi.io/rpc/v0_8",
     chainId: constants.StarknetChainId.SN_SEPOLIA
   }),
   argentSessionServiceBaseUrl: ARGENT_SESSION_SERVICE_BASE_URL // Optional: defaulted to mainnet url
 })
 
+
 // example for creating the calldata
 const erc20Contract = new Contract(
   Erc20Abi as Abi,
@@ -239,3 +240,27 @@ const { signature, outsideExecutionTypedData } =
     network // values "mainnet" | "sepolia", default to "mainnet"
   })
 ```
+
+## Creating a session account with paymaster
+
+[starknetjs paymaster documentation](https://starknetjs.com/docs/guides/paymaster/#overview)
+
+```typescript
+
+const paymasterRpc = new PaymasterRpc({
+  nodeUrl: "node-url,
+  headers: { "api-key": "your-api-key- },
+})
+
+const sessionAccount = await buildSessionAccount({
+  useCacheAuthorisation: false, // optional and defaulted to false, will be added in future developments
+  session,
+  sessionKey,
+  provider: new RpcProvider({
+    nodeUrl: "https://starknet-sepolia.public.blastapi.io/rpc/v0_8",
+    chainId: constants.StarknetChainId.SN_SEPOLIA
+  }),
+  argentSessionServiceBaseUrl: ARGENT_SESSION_SERVICE_BASE_URL, // Optional: defaulted to mainnet url
+  paymasterRpc
+})
+```

src/SessionAccount.ts

@@ -62,6 +62,7 @@ export class SessionAccount {
     provider,
     session,
     cacheAuthorisation = false,
+    paymasterRpc,
   }: GetAccountWithSessionSignerParams) {
     const sessionSigner = new SessionSigner(
       (calls: Call[], invocationSignerDetails: InvocationsSignerDetails) => {
@@ -75,7 +76,14 @@ export class SessionAccount {
       },
     )
 
-    return new Account(provider, session.address, sessionSigner)
+    return new Account(
+      provider,
+      session.address,
+      sessionSigner,
+      undefined,
+      undefined,
+      paymasterRpc,
+    )
   }
 
   private async signTransaction(

src/SessionAccount.types.ts

@@ -3,6 +3,7 @@ import {
   Call,
   InvocationsSignerDetails,
   ProviderInterface,
+  PaymasterRpc,
 } from "starknet"
 import { Session } from "./session.types"
 import { Network } from "./outsideExecution.types"
@@ -11,6 +12,7 @@ export interface GetAccountWithSessionSignerParams {
   provider: ProviderInterface
   session: Session
   cacheAuthorisation?: boolean
+  paymasterRpc?: PaymasterRpc
 }
 
 export interface GetSessionSignatureForTransactionParams {

src/session.types.ts

@@ -3,6 +3,7 @@ import {
   BigNumberish,
   CairoCustomEnum,
   Calldata,
+  PaymasterRpc,
   ProviderInterface,
   Signature,
   constants,
@@ -78,6 +79,7 @@ export type BuildSessionAccountParams = {
   provider: ProviderInterface
   useCacheAuthorisation?: boolean
   argentSessionServiceBaseUrl?: string
+  paymasterRpc?: PaymasterRpc
 }
 
 export type ArgentServiceSignatureResponse = {

src/utils.ts

@@ -107,6 +107,7 @@ const buildSessionAccount = async ({
   provider,
   argentSessionServiceBaseUrl,
   useCacheAuthorisation,
+  paymasterRpc,
 }: BuildSessionAccountParams): Promise<Account> => {
   const dappService = new SessionAccount(
     session,
@@ -118,6 +119,7 @@ const buildSessionAccount = async ({
     provider,
     session,
     cacheAuthorisation: useCacheAuthorisation,
+    paymasterRpc,
   })
 }