ethereum-development

name	ethereum-development
description	Master Ethereum development including EVM, gas optimization, and client interactions
sasmp_version	1.3.0
version	2.0.0
updated	2025-01
bonded_agent	02-ethereum-development
bond_type	PRIMARY_BOND
atomic	true
single_responsibility	ethereum_development
parameters	{"topic":{"type":"string","required":true,"enum":["evm","gas","transactions","clients","debugging"]},"network":{"type":"string","default":"mainnet","enum":["mainnet","sepolia","holesky","local"]}}
retry_config	{"max_attempts":3,"backoff":"exponential","initial_delay_ms":1000}
logging	{"level":"info","include_timestamps":true,"track_usage":true}

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 }  ;
 { mainnet }  ;

 client = ({ : mainnet, : () });


  () {
   slot = (([, ], [user, ]));
    client.({ : contract, slot });
}