Agent Skills
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megaeth-developer
GitHubMegaETH全栈开发指南，涵盖钱包管理、Kyber代币兑换、EIP-7966同步交易提交、RPC批处理、WebSocket实时订阅及智能合约存储优化。提供链配置、Gas策略及mega-evme调试工具使用规范，适用于MegaETH应用构建与部署。
Trigger Scenarios
在MegaETH上构建dApp或智能合约
需要管理MegaETH钱包或发送交易
进行MegaETH代币兑换或桥接操作
优化MegaETH RPC调用或WebSocket连接
调试MegaETH交易或分析Gas消耗
Install
npx skills add NeverSight/learn-skills.dev --skill megaeth-developer -g -y
SKILL.md
Frontmatter
{
"name": "megaeth-developer",
"description": "End-to-end MegaETH development playbook (Feb 2026). Covers wallet operations, token swaps (Kyber Network), eth_sendRawTransactionSync (EIP-7966) for instant receipts, JSON-RPC batching, real-time mini-block subscriptions, storage-aware contract patterns (Solady RedBlackTreeLib), MegaEVM gas model, WebSocket keepalive, bridging from Ethereum, and debugging with mega-evme. Use when building on MegaETH, managing wallets, sending transactions, or deploying contracts."
}
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: JSON-RPC batching over Multicall
- Prefer
client.request([...])batch calls - Multicall (
aggregate3) harder to cache, weaker consistency - Never batch slow methods (
eth_getLogs) with fast ones (eth_call)
3. WebSocket: keepalive required
- Send
eth_chainIdevery 30 seconds - 50 connections per VIP endpoint, 10 subscriptions per connection
- Use
miniBlockssubscription for real-time data
4. Storage: slot reuse patterns
- SSTORE 0→non-zero costs 2M gas × multiplier (expensive)
- Use Solady's RedBlackTreeLib instead of Solidity mappings
- Design for slot reuse, not constant allocation
5. Gas: skip estimation when possible
- Base fee stable at 0.001 gwei, no EIP-1559 adjustment
- Ignore
eth_maxPriorityFeePerGas(returns 0) - Hardcode gas limits to save round-trip
- Always use remote
eth_estimateGas(MegaEVM costs differ from standard EVM)
6. Debugging: mega-evme CLI
- Replay transactions with full traces
- Profile gas by opcode
- https://github.com/megaeth-labs/mega-evm
Operating procedure
1. Classify the task layer
- Frontend/WebSocket layer
- RPC/transaction layer
- Smart contract layer
- Testing/debugging layer
2. Pick the right patterns
- Frontend: single WebSocket → broadcast to users (not per-user connections)
- Transactions: sign locally →
eth_sendRawTransactionSync→ done - Contracts: check SSTORE patterns, avoid volatile data access limits
- Testing: use mega-evme for replay, Foundry with
--skip-simulation
3. Implement with MegaETH-specific correctness
Always be explicit about:
- Chain ID (4326 mainnet, 6343 testnet)
- Gas limit (hardcode when possible)
- Base fee (0.001 gwei, no buffer)
- Storage costs (new slots are expensive)
- Volatile data limits (20M gas after block.timestamp access)
4. Deliverables expectations
When implementing changes, provide:
- Exact files changed + diffs
- Commands to build/test/deploy
- Gas cost notes for storage-heavy operations
- RPC optimization notes if applicable
Progressive disclosure (read when needed)
- Wallet operations: wallet-operations.md
- Frontend patterns: frontend-patterns.md
- RPC methods reference: rpc-methods.md
- Smart contract patterns: smart-contracts.md
- Storage optimization: storage-optimization.md
- Gas model: gas-model.md
- Testing & debugging: testing.md
- Security considerations: security.md
- Reference links: resources.md
Version History
- e0220ca Current 2026-07-05 20:32
