AggSandbox

Overview

AggSandbox is a local development sandbox for cross-chain infrastructure and bridge workflows. It gives developers a repeatable environment for running chains, contracts, transactions, and bridge operations.

Problem

Cross-chain systems are difficult to test because local environments need multiple networks, bridge contracts, services, transaction scripts, and clear inspection points.

My role

I developed CLI and workflow pieces for local multichain infrastructure, bridge testing, transaction execution, and debugging.

Technical details

• Built Rust CLI workflows for starting, inspecting, and operating a local cross-chain sandbox.
• Worked with executable contract scripts and bridge command flows for repeatable testing.
• Connected local infrastructure concepts across EVM chains, AggLayer-oriented workflows, and cross-chain messaging experiments.

Hard parts and tradeoffs

• The sandbox needed to hide setup complexity without hiding the details developers need when bridge operations fail.
• Local reproducibility mattered more than presenting a polished product abstraction.

Current state

The project is public under Nethermind with repository documentation and external AggLayer documentation.

Evidence

• GitHub repository
• AggLayer documentation