bankofai-agent-wallet 2.4.0

Universal multi-chain secure signing SDK for AI agents

agent-wallet (Python)

Universal multi-chain signing SDK for AI agents — Python implementation.

Install

pip install bankofai-agent-wallet

Includes CLI (agent-wallet), EVM and TRON support — no extras needed.

Quick Start

from agent_wallet import resolve_wallet

wallet = await resolve_wallet(network="tron:nile")
signature = await wallet.sign_message(b"hello")

resolve_wallet automatically finds your wallet config in ~/.agent-wallet (or AGENT_WALLET_DIR).

Public API

from agent_wallet import (
    resolve_wallet,           # → Wallet (one-shot)
    resolve_wallet_provider,  # → ConfigWalletProvider | EnvWalletProvider
    ConfigWalletProvider,     # file-backed provider (local_secure / raw_secret)
    EnvWalletProvider,        # env-var-backed provider (AGENT_WALLET_PRIVATE_KEY)
)

resolve_wallet

Returns a ready-to-sign Wallet for the given network:

wallet = await resolve_wallet(network="eip155:1")
sig = await wallet.sign_transaction({"to": "0x...", "value": 0})

resolve_wallet_provider

Returns either ConfigWalletProvider or EnvWalletProvider based on what's available:

provider = resolve_wallet_provider(network="eip155:1")

# Get the active wallet
wallet = await provider.get_active_wallet()

# Or a specific wallet
wallet = await provider.get_wallet("my_wallet", network="tron:nile")

Provider resolution order

1. Password available (from runtime_secrets.json or AGENT_WALLET_PASSWORD) → ConfigWalletProvider
2. wallets_config.json exists with wallets → ConfigWalletProvider
3. Otherwise → EnvWalletProvider (reads AGENT_WALLET_PRIVATE_KEY / AGENT_WALLET_MNEMONIC)

Wallet Interface

class Wallet(ABC):
    async def get_address() -> str
    async def sign_raw(raw_tx: bytes) -> str
    async def sign_transaction(payload: dict) -> str
    async def sign_message(msg: bytes) -> str

class Eip712Capable(ABC):
    async def sign_typed_data(data: dict) -> str

Both EVM and TRON network-specific signers implement Wallet + Eip712Capable.

Network Routing

Network string	Adapter	Mnemonic derivation
eip155 or eip155:<chainId>	EVM	m/44'/60'/0'/0/{index}
tron or tron:<chain>	TRON	m/44'/195'/0'/0/{index}

Environment Variables

Variable	Description
AGENT_WALLET_DIR	Wallet directory (default ~/.agent-wallet)
AGENT_WALLET_PASSWORD	Password for local_secure wallets
AGENT_WALLET_PRIVATE_KEY	Env fallback private key (hex)
AGENT_WALLET_MNEMONIC	Env fallback mnemonic phrase
AGENT_WALLET_MNEMONIC_ACCOUNT_INDEX	Mnemonic account index (default 0)

Examples

• tron_sign_and_broadcast.py
• bsc_sign_and_broadcast.py
• tron_x402_sign_typed_data.py
• bsc_x402_sign_typed_data.py
• dual_sign_typed_data_from_private_key.py
• switch_active_wallet.py

Development

pip install -e ".[dev]"
pytest

License

MIT — BankOfAI