⚡ Run an iApp

There are multiple ways to execute an iApp on the iExec network. An iApp can be:

• Self-sufficient - Basic execution without additional inputs
• Data-dependent - Requires protected data, secrets, input files, or command-line arguments

This guide covers the basic execution methods. For advanced features like protected data, arguments, and input files, see the dedicated guides.

When to Use Each Method

• iApp Generator CLI: For developers who have built their own iApp
• iExec Library: For JavaScript applications and web3 integration

Method 1: Using the iApp Generator CLI

The iApp Generator CLI provides a streamlined way to execute iApp, especially for developers who have built their own iApp.

Note: For installation instructions, see the iApp Generator Getting Started guide.

Terminal

$ iapp run 0x1f80DCebc2EAAff0Db7156413C43B7e88D189923 --chain arbitrum-mainnet

  _____                     _       
 | ____|_  _____  ___ _   _| |_ ___ 
 |  _| \ \/ / _ \/ __| | | | __/ _ \
 | |___ >  <  __/ (__| |_| | ||  __/
 |_____/_/\_\___|\___|\__,_|\__\___|
                                    

Method 2: Using the iExec SDK Library

The iExec SDK provides a modular JavaScript interface for executing iApp.

// Create & Sign a request order
const requestorderToSign = await iexec.order.createRequestorder({
  app: '0x456def...', // The iApp address
  category: 0,
});
const requestOrder = await iexec.order.signRequestorder(requestorderToSign);

// Fetch app orders
const appOrders = await iexec.orderbook.fetchAppOrderbook(
  '0x456def...' // Filter by specific app
);
if (appOrders.orders.length === 0) {
  throw new Error('No app orders found for the specified app');
}

// Fetch workerpool orders
const workerpoolOrders = await iexec.orderbook.fetchWorkerpoolOrderbook({
  workerpool: '0xa5de76...', // Filter by specific workerpool
});
if (workerpoolOrders.orders.length === 0) {
  throw new Error('No workerpool orders found for the specified workerpool');
}

// Execute the task
const taskId = await iexec.order.matchOrders({
  requestorder: requestOrder,
  apporder: appOrders.orders[0].order,
  workerpoolorder: workerpoolOrders.orders[0].order,
});

Next Steps

• Discover how to run an iApp with inputs
• Understand how to pay for executions