layer-2s

Compare Ethereum Layer 2 networks with Chain IDs, RPCs, and gas costs.

Updated Mar 6, 2026
One-click install
npx skills add https://github.com/andginja/ethskills --skill layer-2s
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: layer-2s
Source: https://github.com/andginja/ethskills/tree/main/skills/layer-2s
Command: npx skills add https://github.com/andginja/ethskills --skill layer-2s

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps users understand and choose the right Layer 2 (L2) blockchain for their Ethereum-based applications by providing up-to-date information on their features, costs, and use cases.

Core Features & Use Cases

  • L2 Comparison: Detailed breakdown of major L2s (Arbitrum, Optimism, Base, zkSync, Scroll, Linea) including Chain IDs, RPCs, and block explorers.
  • Decision Matrix: A guide to selecting the best L2 based on application type (DeFi, consumer, enterprise, etc.).
  • Gas Cost Analysis: Real-world gas cost comparisons for common operations across different L2s.
  • Bridging Information: Guidance on native and third-party bridges, including speed and security considerations.

Quick Start

Provide a comparison of Arbitrum, Base, and zkSync for building a new DeFi application.

Frequently Asked Questions about layer-2s

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I choose the best Ethereum Layer 2 for a new DeFi application?

Ethereum Layer 2 scaling solutions like Arbitrum and Base offer lower gas costs for DeFi. Use a decision matrix evaluating application type, bridging strategies, and real-world gas cost comparisons to select the best L2.

What are the differences in gas costs across Layer 2 networks like Arbitrum and zkSync?

Gas costs across Layer 2 networks vary significantly. This guide provides real-world gas cost comparisons for common operations across Arbitrum, Optimism, Base, zkSync Era, Scroll, and Linea to highlight key financial differences.

How do I find Chain IDs and RPC endpoints for Ethereum L2s?

You can find Chain IDs and RPC endpoints for Ethereum L2s in this comprehensive guide. It details connection parameters and block explorers for Arbitrum, Optimism, Base, zkSync Era, Scroll, and Linea.

What should I consider when bridging assets between Ethereum and Layer 2 networks?

When bridging assets to Layer 2 networks, consider the speed and security of native versus third-party bridges. This guide covers bridging strategies and highlights key differences in L2 contract behavior to ensure safe transfers.

How does L2 contract behavior differ when deploying to zkSync or Scroll?

L2 contract behavior on zkSync or Scroll can differ due to their specific execution environments. This guide highlights key differences in contract behavior across major L2s to help you navigate deployment variations.