solidity-development

name	solidity-development
description	Master Solidity smart contract development with patterns, testing, and best practices
sasmp_version	1.3.0
version	2.0.0
updated	2025-01
bonded_agent	03-solidity-expert
bond_type	PRIMARY_BOND
atomic	true
single_responsibility	solidity_development
parameters	{"topic":{"type":"string","required":true,"enum":["syntax","patterns","testing","upgrades","security"]},"solidity_version":{"type":"string","default":"0.8.24"}}
retry_config	{"max_attempts":3,"backoff":"exponential","initial_delay_ms":1000}
logging	{"level":"info","include_timestamps":true,"track_usage":true}

Solidity Development Skill

Master Solidity smart contract development with design patterns, testing strategies, and production best practices.

Quick Start

# Invoke this skill for Solidity development
Skill("solidity-development", topic="patterns", solidity_version="0.8.24")

Topics Covered

1. Language Features (0.8.x)

Modern Solidity essentials:

• Data Types: Value, reference, mappings
• Functions: Visibility, modifiers, overloading
• Inheritance: Diamond problem, C3 linearization
• Custom Errors: Gas-efficient error handling

2. Design Patterns

Battle-tested patterns:

• CEI: Checks-Effects-Interactions
• Factory: Contract deployment patterns
• Proxy: Upgradeable contracts
• Access Control: RBAC, Ownable

3. Testing

Comprehensive test strategies:

• Unit Tests: Foundry, Hardhat
• Fuzz Testing: Property-based testing
• Invariant Testing: System-wide properties
• Fork Testing: Mainnet simulation

4. Upgradability

Safe upgrade patterns:

• UUPS: Self-upgrading proxy
• Transparent: Admin separation
• Beacon: Shared implementation
• Diamond: Multi-facet

Code Examples

CEI Pattern

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

contract SecureVault {
    mapping(address => uint256) public balances;

    error InsufficientBalance();
    error TransferFailed();

    function withdraw(uint256 amount) external {
        // 1. CHECKS
        if (balances[msg.sender] < amount) revert InsufficientBalance();

        // 2. EFFECTS
        balances[msg.sender] -= amount;

        // 3. INTERACTIONS
        (bool ok,) = msg.sender.call{value: amount}("");
        if (!ok) revert TransferFailed();
    }
}

Factory Pattern

contract TokenFactory {
    event TokenCreated(address indexed token, address indexed owner);

    function createToken(
        string memory name,
        string memory symbol
    ) external returns (address) {
        Token token = new Token(name, symbol, msg.sender);
        emit TokenCreated(address(token), msg.sender);
        return address(token);
    }
}