megaeth-developer

# MegaETH Development Skill

## What this Skill is for
Use this Skill when the user asks for:
- Wallet setup and management on MegaETH
- Sending transactions, checking balances, token operations
- Token swaps via Kyber Network aggregator
- MegaETH dApp frontend (React / Next.js with real-time updates)
- RPC configuration and transaction flow optimization
- Smart contract development with MegaEVM considerations
- Storage optimization (avoiding expensive SSTORE costs)
- Gas estimation and fee configuration
- Testing and debugging MegaETH transactions
- WebSocket subscriptions and mini-block streaming
- Bridging ETH from Ethereum to MegaETH

## Chain Configuration

| Network | Chain ID | RPC | Explorer |
|---------|----------|-----|----------|
| Mainnet | 4326 | `https://mainnet.megaeth.com/rpc` | `https://mega.etherscan.io` |
| Testnet | 6343 | `https://carrot.megaeth.com/rpc` | `https://megaeth-testnet-v2.blockscout.com` |

## Default stack decisions (opinionated)

### 1. Transaction submission: eth_sendRawTransactionSync first
- Use `eth_sendRawTransactionSync` (EIP-7966) — returns receipt in <10ms
- Eliminates polling for `eth_getTransactionReceipt`
- Docs: https://docs.megaeth.com/realtime-api

### 2. RPC: Multicall for eth_call batching (v2.0.14+)
- Prefer Multicall (`aggregate3`) for batching multiple `eth_call` requests
- As of v2.0.14, `eth_call` is 2-10x faster; Multicall amortizes per-RPC overhead
- Still avoid mixing slow methods (`eth_getLogs`) with fast ones in same request

**Note:** Earlier guidance recommended JSON-RPC batching over Multicall for caching benefits. With v2.0.14's performance improvements, Multicall is now preferred.

### 3. WebSocket: keepalive required
- Send `eth_chainId` every 30 seconds
- 50 connections per VIP endpoint, 10 subscriptions per connection
- Use `miniBlocks` subscription for real-time data

### 4. Storage: slot reuse patterns
- SSTORE 0→non-zero costs 2M gas × multiplier (expensive)
- Use Solady's RedBlackTreeLib instea...

# MegaETH Developer Skill for AI Agents

A comprehensive skill for AI coding agents (Claude Code, OpenClaw, Codex) to build real-time applications on MegaETH.

## Overview

This skill provides AI agents with deep knowledge of the MegaETH development ecosystem:

- **Transactions**: `eth_sendRawTransactionSync` (EIP-7966) for instant receipts
- **RPC Patterns**: JSON-RPC batching, WebSocket keepalive, mini-block subscriptions
- **Storage**: Optimization patterns to avoid expensive SSTORE costs
- **Gas Model**: MegaEVM-specific costs and estimation strategies
- **Debugging**: mega-evme CLI for transaction replay and gas profiling
- **Security**: MegaETH-specific considerations and audit checklists

## Installation

### Quick Install (skills.sh)

```bash
npx skills add 0xBreadguy/megaeth-ai-developer-skills
```

### Manual Install

```bash
git clone https://github.com/0xBreadguy/megaeth-ai-developer-skills
# Copy to your agent's skills directory
```

### OpenClaw / ClawdHub

```bash
clawdhub install megaeth-developer
```

## Skill Structure

```
├── SKILL.md                  # Main skill (stack decisions, operating procedure)
├── wallet-operations.md      # Wallet setup, balances, transfers, swaps, bridging
├── frontend-patterns.md      # React/Next.js, WebSocket, real-time UX
├── rpc-methods.md            # RPC reference, rate limits, batching
├── smart-contracts.md        # MegaEVM patterns, volatile data, predeploys
├── storage-optimization.md   # SSTORE costs, Solady RedBlackTreeLib
├── gas-model.md              # Gas costs, estimation, base fee
├── testing.md                # mega-evme, Foundry, debugging
├── security.md               # Vulnerabilities and prevention
└── resources.md              # Links, tools, explorers, bridges, DEX
```

## Usage

Once installed, your AI agent will automatically use this skill when you ask about:

- Building dApps on MegaETH
- Transaction submission and confirmation
- Smart contract development with MegaEVM
- Storage optimizatio...