Usage Limit Policy

import { usersNexusClient } from "./client.ts";
import { parseEther } from "viem";

const createSessionsResponse = await usersNexusClient.grantPermission({
  sessionRequestedInfo: [
    {
      sessionPublicKey,
      actionPoliciesInfo: [
        {
          contractAddress: "0x123",
          functionSelector: "0x456",
          // Limit total usage to 100 transactions
          usageLimit: BigInt(100),
          // Optional: Combine with other policies
          validUntil: BigInt(Date.now() + 7 * 24 * 60 * 60 * 1000) // 7 days
        }
      ]
    }
  ]
});

// @filename: types.d.ts
declare module "@biconomy/sdk-canary" {
  export function toSmartSessionsValidator(config: any): any;
  export function smartSessionCreateActions(module: any): any;
}

import { OneOf, Address, Hex, http } from "viem"
import { 
  ActionPolicyInfo, 
  CreateSessionDataParams, 
  toSmartSessionsValidator, 
  smartSessionCreateActions, 
  createBicoBundlerClient, 
  toNexusAccount, 
  getMEEVersion, 
  MEEVersion 
} from "@biconomy/sdk-canary"
import { privateKeyToAccount } from "viem/accounts";
import { baseSepolia } from "viem/chains"; 

const privateKey = "PRIVATE_KEY";
const account = privateKeyToAccount(`0x${privateKey}`)
const bundlerUrl = "https://bundler.biconomy.io/api/v3/84532/nJPK7B3ru.dd7f7861-190d-41bd-af80-6877f74b8f44"; 

export const nexusClient = createBicoBundlerClient({
  account: await toNexusAccount({ 
    signer: account, 
    chainConfiguration: {
      chain: baseSepolia,
      transport: http(),
      version: getMEEVersion(MEEVersion.V2_1_0)
    },
  }),
  transport: http(bundlerUrl),
})

const sessionsModule = toSmartSessionsValidator({
  account: nexusClient.account,
  signer: account
})

// Install the smart sessions module on the Nexus client's smart contract account
const hash = await nexusClient.installModule({
  module: sessionsModule.moduleInitData
})

const { success } = await nexusClient.waitForUserOperationReceipt({ hash })

// Extend the Nexus client with smart session creation actions
export const usersNexusClient = nexusClient.extend(
  smartSessionCreateActions(sessionsModule)
)