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🦀 ClawHub

CryptoWallet - Multi-Chain Blockchain Wallet Manager

by @gnufoo

Complete cryptocurrency wallet management for Web3, DeFi, and blockchain applications. Create and manage EVM (Ethereum, Polygon, BSC, Arbitrum, Optimism, Base, Avalanche) and Solana wallets with encrypted local storage. Query balances for native tokens (ETH, MATIC, BNB, SOL) and standard tokens (ERC20, SPL). Send transactions, interact with smart contracts, and manage multiple addresses across 12+ networks. Secure password-protected key storage with AES-256 encryption. Use for: (1) Creating new

Versionv1.0.0

Downloads2,167

Installs1

Stars⭐ 1

#crypto #requires-wallet #can-sign-transactions #clawhub

View on ClawHub →

TERMINAL

clawhub install cryptowallet

📖 About This Skill

name: cryptowallet description: "Complete cryptocurrency wallet management for Web3, DeFi, and blockchain applications. Create and manage EVM (Ethereum, Polygon, BSC, Arbitrum, Optimism, Base, Avalanche) and Solana wallets with encrypted local storage. Query balances for native tokens (ETH, MATIC, BNB, SOL) and standard tokens (ERC20, SPL). Send transactions, interact with smart contracts, and manage multiple addresses across 12+ networks. Secure password-protected key storage with AES-256 encryption. Use for: (1) Creating new crypto wallets, (2) Importing existing wallets, (3) Checking token balances across chains, (4) Sending cryptocurrency and tokens, (5) Interacting with DeFi protocols and smart contracts, (6) Multi-chain portfolio management, (7) NFT transfers, (8) Blockchain development and testing. Keywords: crypto, cryptocurrency, wallet, blockchain, ethereum, solana, web3, defi, token, erc20, nft, smart contract, metamask alternative, hardware wallet, cold storage, hot wallet, blockchain wallet, digital wallet, bitcoin."

CryptoWallet

Comprehensive cryptocurrency wallet management for Clawdbot agents. Securely create, manage, and transact across multiple blockchain networks with encrypted local key storage.

Supported Networks

EVM Chains (12 networks)

Ethereum, Polygon, BSC, Arbitrum, Optimism, Base

Avalanche, Fantom, Gnosis, zkSync, Linea, Scroll

Solana

Mainnet and Devnet

Full network details in references/networks.json.

Core Features

1. Wallet Management

Create new wallets or import existing ones:

# Create new EVM wallet
python3 scripts/wallet_manager.py create my-eth-wallet --chain evm --password "secure-password"
Create new Solana wallet
python3 scripts/wallet_manager.py create my-sol-wallet --chain solana --password "secure-password"
Import existing wallet
python3 scripts/wallet_manager.py import imported-wallet --chain evm --key "0x..." --password "secure-password"
List all wallets
python3 scripts/wallet_manager.py list

2. Balance Checking

Query native and token balances:

# Native ETH balance on Ethereum
python3 scripts/balance_checker.py 0xYourAddress --network ethereum
ERC20 token balance
python3 scripts/balance_checker.py 0xYourAddress --network polygon --token 0xTokenAddress
Check all EVM networks at once
python3 scripts/balance_checker.py 0xYourAddress --all-evm
Solana balance
python3 scripts/balance_checker.py YourSolanaAddress --network solana
SPL token balance
python3 scripts/balance_checker.py YourSolanaAddress --network solana --token MintAddress

3. Token Transfers

Send native tokens or ERC20/SPL tokens:

# Send ETH
python3 scripts/token_sender.py my-wallet 0xRecipient 0.1 --network ethereum --password "password"
Send ERC20 token
python3 scripts/token_sender.py my-wallet 0xRecipient 100 --network polygon --token 0xTokenAddress --password "password"
Send SOL
python3 scripts/token_sender.py my-wallet RecipientAddress 1.5 --network solana --password "password"

Security: Password required for every transaction. Private keys never leave encrypted storage unprotected.

4. Smart Contract Interaction

Call contract functions (read and write):

# Read call (view function)
python3 scripts/contract_interactor.py 0xContract functionName --abi contract.json --network ethereum --args '[123, "param2"]'
Write call (transaction)
python3 scripts/contract_interactor.py 0xContract mint --abi nft.json --network polygon --args '[1]' --write --wallet my-wallet --password "password"
Payable function (send ETH with call)
python3 scripts/contract_interactor.py 0xContract purchase --abi contract.json --network ethereum --args '[]' --write --wallet my-wallet --password "password" --value 0.05

Security Architecture

Encryption

Algorithm: AES-256-GCM with PBKDF2 key derivation

Iterations: 100,000 (OWASP recommended)

Salt: Random 16-byte salt per wallet

Storage: ~/.clawdbot/cryptowallet/ with 0600 permissions

Key Principles

1. Password-protected transactions - Every send/sign operation requires password 2. Encrypted at rest - Private keys never stored in plaintext 3. No key exposure - Keys decrypted in memory only during signing 4. Isolated storage - Each wallet has independent encryption

See references/security.md for complete security documentation.

Common Workflows

Portfolio Management

Check balances across all networks:

python3 scripts/balance_checker.py 0xYourAddress --all-evm

Multi-Chain Operations

Send the same token across different chains:

# Polygon USDC
python3 scripts/token_sender.py wallet recipient 100 --network polygon --token 0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174 --password "pwd"
Arbitrum USDC
python3 scripts/token_sender.py wallet recipient 100 --network arbitrum --token 0xFF970A61A04b1cA14834A43f5dE4533eBDDB5CC8 --password "pwd"

DeFi Protocol Interaction

Example: Approve and stake tokens

# 1. Approve token spending
python3 scripts/contract_interactor.py 0xTokenAddress approve --abi erc20.json --network ethereum --args '["0xProtocolAddress", "1000000000000000000000"]' --write --wallet my-wallet --password "pwd"
2. Stake tokens
python3 scripts/contract_interactor.py 0xStakingContract stake --abi staking.json --network ethereum --args '["1000000000000000000000"]' --write --wallet my-wallet --password "pwd"

Network Configuration

Modify references/networks.json to:

Add custom RPCs (Infura, Alchemy, QuickNode)

Add new networks

Update chain IDs or explorers

Default RPCs are public and may have rate limits. For production, use dedicated RPC providers.

Dependencies

Install required packages:

pip install web3 solana solders eth-account cryptography base58

Troubleshooting

"Incorrect password"

Password is case-sensitive

No recovery if password is lost (by design)

"Insufficient funds"

Check balance includes gas fees

On Ethereum: gas can be $5-50+ per transaction

"Transaction failed"

Verify network selection

Check contract address is correct

Ensure enough gas limit for complex operations

RPC errors

Public RPCs may be rate-limited

Use references/networks.json to configure your own RPC endpoint

Advanced Usage

Custom Network

Add to references/networks.json:

{
  "evm": {
    "your-network": {
      "name": "Your Chain",
      "chain_id": 12345,
      "rpc": "https://rpc.yourchain.com",
      "explorer": "https://explorer.yourchain.com",
      "native_token": "TOKEN"
    }
  }
}

Batch Operations

Use shell loops for batch transactions:

for addr in $(cat recipients.txt); do
  python3 scripts/token_sender.py wallet $addr 1 --network polygon --password "pwd"
done

Smart Contract ABIs

Generate ABIs from verified contracts on block explorers, or from your Solidity project's artifacts/ folder.

Limitations

Solana SPL transfers: Basic implementation (may need token account creation)

Hardware wallets: Not supported (encrypted file storage only)

Multi-sig: Not supported

Gas estimation: Uses fixed limits (may fail for complex contracts)

Best Practices

1. Test on devnet/testnet first before mainnet transactions 2. Use separate wallets for different purposes (trading, DeFi, cold storage) 3. Backup wallet files and store passwords securely 4. Verify addresses - blockchain transactions are irreversible 5. Monitor gas prices - wait for lower congestion on Ethereum

See references/security.md for comprehensive security guidelines.

📋 Tips & Best Practices

See references/security.md for comprehensive security guidelines.