Web3 Skills Collection

A comprehensive collection of Web3-related Claude Code skills for blockchain development, DeFi interactions, NFT analysis, on-chain data, and cross-chain operations.

Overview

This collection provides Claude Code with specialized capabilities for Web3 tasks:

Category	Skills	Description
DeFi	defi-protocol-interaction	Uniswap, Aave, Compound interactions
NFT	nft-market-analysis	OpenSea, Blur, Magic Eden data
On-Chain	onchain-data-analysis	Etherscan, Dune Analytics queries
Wallet	wallet-operations	Balance queries, transaction building
Bridge	cross-chain-bridge	LayerZero, Wormhole, Stargate, Across
Solana	solana-ecosystem	Jupiter, Raydium, Magic Eden
Neo	neo-ecosystem	Neo N3, NeoX, NeoFS, NEP-17/NEP-11
DeFi Protocols	advanced-defi	Aave V3, 1inch, CoW Protocol integrations
Identity	identity-auth	SIWE, ENS resolution, session management
Security	security-analysis	GoPlus, Honeypot detection, MEV protection
DAO	dao-tooling	Snapshot, Tally, Governor voting automation
Gas	gas-optimization	Base fee prediction, batch vs separate, EIP-1559, EIP-4844 blob

Directory Structure

web3-skills/
├── README.md                 # This file
├── defi/
│   ├── SKILL.md             # DeFi protocol interaction skill
│   └── scripts/
│       ├── uniswap_quote.py    # Uniswap V3 swap quotes
│       ├── aave_positions.py   # Aave lending positions
│       └── defi_tvl.py         # DeFi Llama TVL data
├── nft/
│   ├── SKILL.md             # NFT market analysis skill
│   └── scripts/
│       ├── opensea_collection.py  # OpenSea collection data
│       ├── nft_rarity.py          # Rarity calculations
│       └── market_trends.py       # NFT market trends
├── onchain-analysis/
│   ├── SKILL.md             # On-chain data analysis skill
│   └── scripts/
│       ├── etherscan_address.py    # Address analysis
│       ├── etherscan_transaction.py # Transaction analysis
│       ├── gas_tracker.py          # Gas price tracking
│       └── contract_analyzer.py    # Smart contract analysis
├── wallet/
│   ├── SKILL.md             # Wallet operations skill
│   └── scripts/
│       ├── wallet_balance.py     # Multi-token balance
│       ├── portfolio_tracker.py  # Portfolio tracking
│       └── tx_builder.py         # Transaction construction
├── bridge/
│   ├── SKILL.md             # Cross-chain bridge skill
│   └── scripts/
│       ├── bridge_quote.py     # Bridge quotes
│       ├── bridge_routes.py    # Route optimization
│       └── bridge_status.py    # Status tracking
├── solana/
│   ├── SKILL.md             # Solana ecosystem skill
│   └── scripts/
│       ├── solana_balance.py   # SOL/SPL balances
│       ├── jupiter_quote.py    # Jupiter swap quotes
│       └── solana_nft.py       # Solana NFT data
├── neo/
│   ├── SKILL.md             # Neo N3 ecosystem skill
│   └── scripts/
│       ├── neo_balance.py      # NEO/GAS balances
│       ├── neo_transfer.py     # NEP-17 transfers
│       └── neo_contract.py     # Contract interactions
├── defi-protocols/
│   ├── SKILL.md             # Advanced DeFi protocol integrations
│   └── scripts/
│       ├── aave_lending.py     # Aave V3 lending
│       ├── oneinch_swap.py     # 1inch aggregator
│       └── cow_swap.py         # CoW Protocol swaps
├── identity-auth/
│   ├── SKILL.md             # Web3 identity & authentication
│   └── scripts/
│       ├── siwe_auth.py        # Sign-In with Ethereum
│       ├── ens_resolver.py     # ENS resolution
│       └── session_manager.py  # Web3 sessions
├── security-analysis/
│   ├── SKILL.md             # Security analysis tools
│   └── scripts/
│       ├── goplus_security.py  # GoPlus token security
│       ├── honeypot_check.py   # Honeypot detection
│       └── tenderly_simulate.py # Transaction simulation
├── dao-tooling/
│   ├── SKILL.md             # DAO governance automation
│   └── scripts/
│       ├── snapshot_monitor.py  # Snapshot proposals
│       ├── snapshot_vote.py     # Snapshot voting
│       └── governor_vote.py     # On-chain voting
└── gas-optimization/
    ├── SKILL.md             # Gas optimization (when/how to send cheaper)
    ├── README.md
    └── scripts/
        ├── common.py            # Shared config and RPC helpers
        ├── base_fee_predict.py  # Base fee history, when-to-send
        ├── batch_quote.py       # Batch vs separate gas
        ├── estimate_optimize.py # eth_estimateGas + EIP-1559
        ├── blob_quote.py        # EIP-4844 blob (Ethereum)
        └── optimization_report.py # All-in-one report

Quick Start

Prerequisites

Set up the following environment variables:

# EVM Chains
export ETHERSCAN_API_KEY="your_key"
export RPC_URL="https://eth.llamarpc.com"

# Optional for specific chains
export POLYGON_RPC_URL="https://polygon-rpc.com"
export ARBITRUM_RPC_URL="https://arb1.arbitrum.io/rpc"

# NFT APIs
export OPENSEA_API_KEY="your_key"  # Optional

# Solana
export SOLANA_RPC_URL="https://api.mainnet-beta.solana.com"

Python Dependencies

pip install web3 requests

Skills Overview

DeFi Protocol Interaction

Trigger Keywords: uniswap, aave, compound, swap, lending, borrowing, liquidity, yield, defi

Capabilities:

Get swap quotes from Uniswap V3
Query Aave lending/borrowing positions
Fetch TVL and APY data from DeFi Llama
Compare rates across protocols

Example Usage:

"Get a quote to swap 1 ETH for USDC on Uniswap"
"Check my Aave position health factor for address 0x..."
"What's the current TVL of Aave?"

NFT Market Analysis

Trigger Keywords: nft, opensea, blur, collection, floor price, rarity

Capabilities:

Fetch collection stats from OpenSea
Calculate NFT rarity scores
Track market trends and volume
Compare marketplace data

Example Usage:

"Get floor price for Bored Ape Yacht Club"
"Analyze rarity of BAYC #1234"
"Show trending NFT collections today"

On-Chain Data Analysis

Trigger Keywords: etherscan, transaction, whale, gas, smart contract

Capabilities:

Analyze wallet addresses
Decode transaction details
Track gas prices
Audit smart contracts

Example Usage:

"Analyze this address: 0x..."
"Check transaction details for 0x..."
"What's the current gas price?"

Wallet Operations

Trigger Keywords: wallet, balance, portfolio, transfer, send

Capabilities:

Check multi-chain balances
Track portfolio value
Build transactions
Estimate gas costs

Example Usage:

"Check my wallet balance on Ethereum"
"Show my portfolio across all chains"
"Build a transaction to send 1 ETH to 0x..."

Cross-Chain Bridge

Trigger Keywords: bridge, cross-chain, layerzero, wormhole, stargate

Capabilities:

Get quotes from multiple bridges
Find optimal bridging routes
Track bridge transaction status
Compare fees and speeds

Example Usage:

"Bridge 1000 USDC from Ethereum to Arbitrum"
"Compare bridge options for ETH to Polygon"
"Check status of my Stargate bridge transaction"

Solana Ecosystem

Trigger Keywords: solana, sol, jupiter, raydium, magic eden

Capabilities:

Check SOL and SPL token balances
Get Jupiter swap quotes
Query Solana NFT collections
Analyze staking positions

Example Usage:

"Check my Solana wallet balance"
"Get a quote to swap 10 SOL for USDC"
"What's the floor price of Mad Lads?"

Neo Ecosystem

Trigger Keywords: neo, neo n3, gas, nep17, nep11, neox, neofs

Capabilities:

Check NEO/GAS balances
Build NEP-17 token transfers
Query Neo N3 smart contracts
Interact with NeoX EVM sidechain
NeoFS decentralized storage

Example Usage:

"Check my NEO balance for address N..."
"Transfer 10 GAS to address N..."
"Query the NEO total supply"
"Get contract info for NeoToken"

Supported Chains

EVM Chains

Chain	Chain ID	Native Token	Notes
Ethereum	1	ETH	Mainnet
Polygon	137	POL	Renamed from MATIC (Sept 2024)
Arbitrum	42161	ETH	L2 Rollup
Optimism	10	ETH	L2 Rollup
Base	8453	ETH	Coinbase L2
BSC	56	BNB	Binance Smart Chain
Avalanche	43114	AVAX	C-Chain
zkSync Era	324	ETH	ZK Rollup
Linea	59144	ETH	Consensys zkEVM
NeoX	47763	GAS	Neo EVM sidechain

Non-EVM Chains

Chain	Native Token	Notes
Solana	SOL	High-performance L1
Neo N3	NEO/GAS	dBFT consensus

API References

DeFi APIs

DeFi Llama API - TVL and yields data
Uniswap Docs - DEX contracts
Aave Docs - Lending protocol

NFT APIs

OpenSea API V2 - NFT marketplace (API key required)
Magic Eden API - Solana/EVM NFTs

On-Chain APIs

Etherscan API V2 - Block explorer (use ?chainid=X)
Note: Etherscan V1 API deprecated August 2025

Bridge APIs

Stargate API - 89 chains, LayerZero V2
Wormhole API - 50+ chains
Across API - 21+ chains including Solana
LayerZero - 80+ chains

Solana APIs

Neo APIs

Neo RPC - Neo N3 mainnet
Neo Mamba SDK - Python SDK
NeoX RPC - EVM sidechain

Security Best Practices

Never share private keys - All operations are read-only or transaction-building only
Verify contract addresses - Always verify before interacting
Check approvals - Review token approvals regularly
Use hardware wallets - For significant holdings
Start small - Test with small amounts first

Contributing

Contributions are welcome! Please:

Follow the existing skill format
Include comprehensive SKILL.md documentation
Add working scripts with error handling
Test with real API calls
Update this README

License

MIT License - See LICENSE file for details.

Acknowledgments

Solana Foundation - Reference for Solana skill structure
ComposioHQ - Inspiration for skill organization
UCAI - ABI-to-MCP patterns
EVM MCP Tools - EVM analysis patterns

gas-optimization

Install Command

Content

Skill.md

Web3 Skills Collection

Overview

Directory Structure

Quick Start

Prerequisites

Python Dependencies

Skills Overview

DeFi Protocol Interaction

NFT Market Analysis

On-Chain Data Analysis

Wallet Operations

Cross-Chain Bridge

Solana Ecosystem

Neo Ecosystem

Supported Chains

EVM Chains

Non-EVM Chains

API References

DeFi APIs

NFT APIs

On-Chain APIs

Bridge APIs

Solana APIs

Neo APIs

Security Best Practices

Contributing

License

Acknowledgments