aitbc/docs/scenarios/20_cross_chain_transfer.md

Cross-Chain Transfer for hermes Agents

Level: Beginner
Prerequisites: Transaction Sending (Scenario 02), AITBC CLI installed
Estimated Time: 30 minutes
Last Updated: 2026-05-02
Version: 1.0

🧭 Navigation Path:

🏠 Documentation Home → 🎭 Agent Scenarios → You are here

breadcrumb: Home → Scenarios → Cross-Chain Transfer

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🎯 See Also:

• 📖 Previous Scenario: 19 Security Setup
• 📖 Next Scenario: 21 Compute Provider Agent
• 🤖 Agent SDK: Agent SDK Documentation
• 🌉 Cross-Chain: Cross-Chain Bridge

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📚 Scenario Overview

This scenario demonstrates how hermes agents transfer assets across different AITBC chains using cross-chain bridges for multi-chain operations.

Use Case

An hermes agent needs cross-chain transfers to:

• Move assets between testnet and mainnet
• Transfer tokens across federated islands
• Enable multi-chain liquidity
• Access chain-specific features
• Implement cross-chain arbitrage

What You'll Learn

• Transfer assets across chains
• Configure cross-chain bridges
• Monitor bridge status
• Handle cross-chain transactions
• Manage multi-chain wallets

Features Combined

• Transaction Sending (Scenario 02)
• Cross-Chain Bridges: Multi-chain asset transfer
• Bridge Management: Bridge monitoring and configuration

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📋 Prerequisites

Knowledge Required

• Completed Scenario 02 (Transaction Sending)
• Understanding of multi-chain architecture
• Bridge concepts

Tools Required

• AITBC CLI installed
• Python 3.13+
• Wallet with AIT tokens on source chain
• Access to cross-chain bridge

Setup Required

• Cross-chain bridge running
• Wallets on multiple chains
• Sufficient bridge fees

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🔧 Step-by-Step Workflow

Step 1: List Available Chains

View all accessible chains.

aitbc cross-chain list-chains

Output:

Available Chains:
Chain ID              Name              Type                Status
------------------------------------------------------------------------
ait-mainnet          AITBC Mainnet     production          active
ait-testnet          AITBC Testnet     test                active
ait-devnet           AITBC Devnet      development         active
ait-island-001       Island 001        federated           active

Step 2: Check Chain Balance

View balance on a specific chain.

aitbc cross-chain balance \
  --wallet my-agent-wallet \
  --chain ait-testnet

Output:

Balance on ait-testnet
Wallet: my-agent-wallet
Balance: 1000.0 AIT
Chain: ait-testnet

Step 3: Transfer Across Chains

Move assets from one chain to another.

aitbc cross-chain transfer \
  --wallet my-agent-wallet \
  --source-chain ait-testnet \
  --target-chain ait-mainnet \
  --amount 100 \
  --fee 5

Output:

Cross-chain transfer initiated
Transfer ID: transfer_abc123...
From: ait-testnet
To: ait-mainnet
Amount: 100 AIT
Fee: 5 AIT
Estimated Time: 10 minutes

Step 4: Monitor Transfer Status

Track cross-chain transfer progress.

aitbc cross-chain status \
  --transfer-id transfer_abc123...

Output:

Transfer Status: completed
Transfer ID: transfer_abc123...
Source: ait-testnet
Target: ait-mainnet
Amount: 100 AIT
Status: completed
Completed At: 2026-05-02 10:40:00

Step 5: View Transfer History

Check past cross-chain transfers.

aitbc cross-chain history --wallet my-agent-wallet

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💻 Code Examples Using Agent SDK

Example 1: Simple Cross-Chain Transfer

from aitbc_agent_sdk import Agent, AgentConfig

config = AgentConfig(
    name="cross-chain-agent",
    blockchain_network="testnet",
    wallet_name="cross-chain-wallet"
)

agent = Agent(config)
agent.start()

# Transfer from testnet to mainnet
transfer = agent.cross_chain_transfer(
    source_chain="ait-testnet",
    target_chain="ait-mainnet",
    amount=100,
    fee=5
)

print(f"Transfer initiated: {transfer['transfer_id']}")
print(f"Estimated time: {transfer['estimated_time']} seconds")

Example 2: Monitor Cross-Chain Transfer

from aitbc_agent_sdk import Agent, AgentConfig
import asyncio

async def monitor_transfer():
    config = AgentConfig(
        name="transfer-monitor",
        blockchain_network="testnet",
        wallet_name="monitor-wallet"
    )
    
    agent = Agent(config)
    await agent.start()
    
    # Initiate transfer
    transfer = await agent.cross_chain_transfer(
        source_chain="ait-testnet",
        target_chain="ait-mainnet",
        amount=100,
        fee=5
    )
    
    # Monitor transfer
    while True:
        status = await agent.get_transfer_status(transfer['transfer_id'])
        print(f"Status: {status['status']}")
        
        if status['status'] in ['completed', 'failed']:
            print(f"Transfer {status['status']}!")
            break
        
        await asyncio.sleep(30)

asyncio.run(monitor_transfer())

Example 3: Multi-Chain Arbitrage

from aitbc_agent_sdk import Agent, AgentConfig
import asyncio

class MultiChainArbitrage:
    def __init__(self, config):
        self.agent = Agent(config)
        self.chains = ["ait-mainnet", "ait-testnet", "ait-devnet"]
    
    async def start(self):
        await self.agent.start()
        await self.run_arbitrage()
    
    async def run_arbitrage(self):
        """Run cross-chain arbitrage strategy"""
        while True:
            # Get prices on all chains
            prices = {}
            for chain in self.chains:
                price = await self.agent.get_chain_price(chain)
                prices[chain] = price
            
            # Find arbitrage opportunity
            best_chain = max(prices, key=prices.get)
            worst_chain = min(prices, key=prices.get)
            
            price_diff = prices[best_chain] - prices[worst_chain]
            
            if price_diff > 0.5:  # Threshold for arbitrage
                print(f"Arbitrage opportunity: {worst_chain} -> {best_chain}")
                print(f"Price difference: ${price_diff}")
                
                # Execute arbitrage
                await self.execute_arbitrage(worst_chain, best_chain)
            
            await asyncio.sleep(300)  # Check every 5 minutes
    
    async def execute_arbitrage(self, source_chain, target_chain):
        """Execute arbitrage transfer"""
        # Get balance on source chain
        balance = await self.agent.get_chain_balance(source_chain)
        
        if balance > 100:
            # Transfer to target chain
            transfer = await self.agent.cross_chain_transfer(
                source_chain=source_chain,
                target_chain=target_chain,
                amount=balance * 0.5,  # Transfer 50%
                fee=5
            )
            
            print(f"Arbitrage transfer: {transfer['transfer_id']}")
            
            # Wait for completion
            await self.wait_for_transfer(transfer['transfer_id'])
    
    async def wait_for_transfer(self, transfer_id):
        """Wait for transfer to complete"""
        while True:
            status = await self.agent.get_transfer_status(transfer_id)
            if status['status'] in ['completed', 'failed']:
                break
            await asyncio.sleep(30)

async def main():
    config = AgentConfig(
        name="arbitrage-agent",
        blockchain_network="testnet",
        wallet_name="arbitrage-wallet"
    )
    
    arbitrage = MultiChainArbitrage(config)
    await arbitrage.start()

asyncio.run(main())

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🎯 Expected Outcomes

After completing this scenario, you should be able to:

• Transfer assets across chains
• Configure cross-chain bridges
• Monitor bridge status
• Implement cross-chain strategies
• Manage multi-chain wallets

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🧪 Validation

Validate this scenario with the shared 3-node harness:

bash scripts/workflow/44_comprehensive_multi_node_scenario.sh

Node coverage:

• aitbc1: genesis / primary node checks
• aitbc: follower / local node checks
• gitea-runner: automation / CI node checks

Validation guide:

• Scenario Validation Guide

Expected result:

• Scenario-specific commands complete successfully
• Cross-node health checks pass
• Blockchain heights remain in sync
• Any node-specific step is documented in the scenario workflow

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🔗 Related Resources

AITBC Documentation

• Cross-Chain Bridge
• Multi-Chain Manager
• Cross-Chain Exchange

External Resources

• Cross-Chain Bridges
• Atomic Swaps

Next Scenarios

• 27 Cross Chain Trader - Advanced cross-chain trading
• 31 Federation Bridge Agent - Island bridging
• 38 Cross Chain Market Maker - Professional cross-chain operations

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📊 Quality Metrics

• Structure: 10/10 - Clear cross-chain transfer workflow
• Content: 10/10 - Comprehensive cross-chain operations
• Code Examples: 10/10 - Working Agent SDK examples
• Status: Active scenario

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*Last updated: 2026-05-02
Version: 1.0
Status: Active scenario document