MCPInstall

ethereum-development

by pluginagentmarketplaceBusiness & Finance

Master Ethereum development including EVM, gas optimization, and client interactions

Installs
51
Last 24h
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Security
Not audited

Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/pluginagentmarketplace/custom-plugin-blockchain --skill ethereum-development
  1. 01

    Install

    Run the command in your project. The CLI asks which agents to install for.

  2. 02

    Describe the task

    Ask your agent for something this skill covers. It loads ethereum-development automatically when relevant.

  3. 03

    Review the result

    The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

Ethereum Development Skill

Master Ethereum development including EVM internals, gas optimization, transaction mechanics, and client interactions.

Quick Start

# Invoke this skill for Ethereum development
Skill("ethereum-development", topic="gas", network="mainnet")

Topics Covered

1. EVM (Ethereum Virtual Machine)

Understand the execution environment:

  • Stack Machine: 256-bit words, 1024 depth
  • Memory: Linear byte array, expansion costs
  • Storage: Persistent key-value, 32-byte slots
  • Opcodes: Costs, effects, gas consumption

2. Gas Optimization

Reduce transaction costs:

  • Storage Packing: Fit multiple values in one slot
  • Calldata vs Memory: Choose efficiently
  • Loop Optimization: Cache storage reads
  • Custom Errors: Save gas on reverts

3. Transaction Mechanics

Master transaction lifecycle:

  • Types: Legacy (0), Access List (1), EIP-1559 (2)
  • Fee Estimation: Base fee, priority fee, max fee
  • Nonce Management: Sequential ordering
  • Receipts: Status, logs, gas used

4. Client Interactions

Work with Ethereum nodes:

  • RPC Methods: eth_, debug_, trace_
  • State Queries: Storage slots, code, balance
  • Event Subscriptions: Filter logs, topics

Code Examples

Gas-Efficient Storage

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

contract Optimized {
    // Pack into single slot (32 bytes)
    struct User {
        uint128 balance;    // 16 bytes
        uint64 lastUpdate;  // 8 bytes
        uint32 nonce;       // 4 bytes
        bool active;        // 1 byte
        // 3 bytes padding
    }

    mapping(address => User) public users;
}

Read Storage Slot

import { createPublicClient, http, keccak256, encodePacked, pad } from 'viem';
import { mainnet } from 'viem/chains';

const client = createPublicClient({ chain: mainnet, transport: http() });

// Read mapping value: balances[address]
async function getBalance(contract: `0x${string}`, user: `0x${string}`) {
  const slot = keccak256(encodePacked(['address', 'uint256'], [user, 0n]));
  return await client.getStorageAt({ address: contract, slot });
}

EIP-1559 Transaction

import { createWalletClient, http, parseEther } from 'viem';

const client = createWalletClient({ transport: http() });

const hash = await client.sendTransaction({
  to: '0x...',
  value: parseEther('0.1'),
  type: 'eip1559',
  maxFeePerGas: parseGwei('30'),
  maxPriorityFeePerGas: parseGwei('2'),
});

Gas Optimization Cheatsheet

TechniqueSavingsExample
Storage packing~20k/slotuint128 + uint128 in one slot
Calldata vs memory~3/byteUse calldata for read-only
Unchecked math~80/opunchecked { i++; }
Custom errors~200+error Unauthorized()
Short-circuitVariableCheap checks first

Common Pitfalls

PitfallIssueSolution
Storage in loopsExpensive readsCache in memory first
String storageUses multiple slotsUse bytes32 when possible
Zero value storageFull refund goneDon't rely on SSTORE refunds

Troubleshooting

"Transaction underpriced"

# Check current gas prices
cast gas-price --rpc-url $RPC
cast basefee --rpc-url $RPC

Set maxFeePerGas to at least 2x current base fee.

"Out of gas"

# Trace transaction to find issue
cast run --trace $TX_HASH --rpc-url $RPC

"Nonce too low"

# Get current nonce
cast nonce $ADDRESS --rpc-url $RPC

CLI Commands

# Foundry essentials
forge build --sizes          # Contract sizes
forge test --gas-report      # Gas consumption
forge snapshot               # Gas snapshots
cast storage $ADDR $SLOT     # Read storage
cast call $ADDR "fn()"       # Simulate call

Test Template

contract GasTest is Test {
    function test_GasOptimization() public {
        uint256 gasBefore = gasleft();
        target.optimizedFunction();
        uint256 gasUsed = gasBefore - gasleft();

        assertLt(gasUsed, 50000, "Too much gas used");
    }
}

Cross-References

  • Bonded Agent: 02-ethereum-development
  • Related Skills: solidity-development, web3-frontend

Version History

VersionDateChanges
2.0.02025-01Production-grade with viem, gas optimization
1.0.02024-12Initial release

FAQ

What does the ethereum-development skill do?

Master Ethereum development including EVM, gas optimization, and client interactions

How do I install ethereum-development?

Run npx skills add https://github.com/pluginagentmarketplace/custom-plugin-blockchain --skill ethereum-development in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/ethereum-development/ (personal) or .claude/skills/ethereum-development/ (project).

Which AI agents can use ethereum-development?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is ethereum-development safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains ethereum-development?

It is published by pluginagentmarketplace in pluginagentmarketplace/custom-plugin-blockchain. It has 51 recorded installs.

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