How do I install the Evm Contract Source skill?

Run npx skillmds@latest add majiayu000/evm-contract-source in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Evm Contract Source safe to use?

This skill has not completed SkillMD's automated safety review yet. Independent scanners report: SkillSpector: PASS, Skill Scanner: PASS. Capability flags: docs only. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Evm Contract Source?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Evm Contract Source free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Evm Contract Source?

majiayu000 (@majiayu000) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Evm Contract Source by majiayu000 — Agent Skill

Name: Evm Contract Source
Rating: 4.666666666666667 (3 reviews)
Author: majiayu000

Evm Contract Source

Use this skill when the user asks to "get contract source code", "show verified contract", "fetch source from etherscan", "view smart contract code", or mentions viewing verified source code on EVM chains (Ethereum, Polygon, Arbitrum, etc.). Requires a contract address and optional chain parameter.

majiayu000 Updated Sep 9, 2026 567 repo stars

File contents

EVM Contract Source Fetcher

Fetches verified smart contract source code from block explorers (Etherscan, Polygonscan, etc.).

Usage

Run the script with address and optional chain:

${CLAUDE_PLUGIN_ROOT}/scripts/crypto-evm-contract-source.sh <address> [chain]

Arguments

address (required): Contract address in hex format (0x + 40 hex characters). ENS names are NOT supported.
chain (optional): Chain name - ethereum (default), polygon, arbitrum, optimism, base, bsc

Supported Chains

Chain	Aliases	Explorer
ethereum	eth, mainnet	Etherscan
polygon	matic	Polygonscan
arbitrum	arb	Arbiscan
optimism	op	Optimism Etherscan
base	-	Basescan
bsc	binance	BSCScan

Requirements

cast (Foundry) must be installed
API key must be set for the target chain:
- ETHERSCAN_API_KEY for Ethereum (also used as fallback for other chains)
- POLYGONSCAN_API_KEY for Polygon
- ARBISCAN_API_KEY for Arbitrum
- OPTIMISM_API_KEY for Optimism
- BASESCAN_API_KEY for Base
- BSCSCAN_API_KEY for BSC

Examples

# Get WETH source on Ethereum
${CLAUDE_PLUGIN_ROOT}/scripts/crypto-evm-contract-source.sh 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2

# Get QuickSwap Router source on Polygon
${CLAUDE_PLUGIN_ROOT}/scripts/crypto-evm-contract-source.sh 0xa5E0829CaCEd8fFDD4De3c43696c57F7D7A678ff polygon

Note

For Solana program IDL, use the sol-program-idl skill instead.

Frequently asked questions