open-wallet-standard
Local, policy-gated signing and wallet management for every chain.
Why OWS
- Local key custody. Private keys stay encrypted at rest and are decrypted only inside the OWS signing path after the relevant checks pass. Current implementations harden in-process memory handling and wipe key material after use.
- Every chain, one interface. EVM, Solana, XRPL, Sui, Bitcoin, Cosmos, Tron, TON, Spark, Filecoin, Nano, NEAR — all first-class. CAIP-2/CAIP-10 addressing abstracts away chain-specific details.
- Policy before signing. A pre-signing policy engine gates agent (API key) operations before decryption — chain allowlists, expiry, and optional custom executables.
- Built for agents. Native SDK and CLI today. A wallet created by one tool works in every other.
Install
pip install open-wallet-standard
The package is fully self-contained — it embeds the Rust core via native FFI. No additional dependencies required.
Quick Start
from ows import create_wallet, sign_message
wallet = create_wallet("agent-treasury")
# => accounts for EVM, Solana, Bitcoin, Cosmos, Tron, TON, Spark, Filecoin, Sui, XRPL, Nano, and NEAR
sig = sign_message("agent-treasury", "evm", "hello")
print(sig["signature"])
API Reference
| Function | Description |
|---|---|
create_wallet(name, passphrase?, words?, vault_path?) |
Create a new wallet with addresses for the current auto-derived chain set |
import_wallet_mnemonic(name, mnemonic, passphrase?, index?, vault_path?) |
Import a wallet from a BIP-39 mnemonic |
import_wallet_private_key(name, private_key_hex, chain?, passphrase?, vault_path?, secp256k1_key?, ed25519_key?) |
Import a wallet from a private key |
list_wallets(vault_path?) |
List all wallets in the vault |
get_wallet(name_or_id, vault_path?) |
Get details of a specific wallet |
delete_wallet(name_or_id, vault_path?) |
Delete a wallet |
export_wallet(name_or_id, passphrase?, vault_path?) |
Export a wallet's mnemonic or keys |
rename_wallet(name_or_id, new_name, vault_path?) |
Rename a wallet |
sign_message(wallet, chain, message, passphrase?, encoding?, index?, vault_path?) |
Sign a message with chain-specific formatting |
sign_hash(wallet, chain, hash_hex, passphrase?, index?, vault_path?) |
Sign a raw 32-byte hash on a secp256k1-backed chain |
sign_authorization(wallet, chain, address, nonce, passphrase?, index?, vault_path?) |
Sign an EIP-7702 authorization tuple |
sign_typed_data(wallet, chain, typed_data_json, passphrase?, index?, vault_path?) |
Sign EIP-712 typed data (EVM only) |
sign_transaction(wallet, chain, tx_hex, passphrase?, index?, vault_path?) |
Sign a raw transaction |
sign_and_send(wallet, chain, tx_hex, passphrase?, index?, rpc_url?, vault_path?) |
Sign and broadcast a transaction |
generate_mnemonic(words?) |
Generate a BIP-39 mnemonic phrase |
derive_address(mnemonic, chain, index?) |
Derive an address from a mnemonic |
create_policy(policy_json, vault_path?) |
Register a policy from a JSON string |
list_policies(vault_path?) |
List all registered policies |
get_policy(id, vault_path?) |
Get a single policy by ID |
delete_policy(id, vault_path?) |
Delete a policy by ID |
create_api_key(name, wallet_ids, policy_ids, passphrase, expires_at?, vault_path?) |
Create an API key for agent access |
list_api_keys(vault_path?) |
List all API keys (tokens never returned) |
revoke_api_key(id, vault_path?) |
Revoke an API key |
Supported Chains
| Chain | Curve | Address Format | Derivation Path |
|---|---|---|---|
| EVM (Ethereum, Polygon, etc.) | secp256k1 | EIP-55 checksummed | m/44'/60'/0'/0/0 |
| Solana | Ed25519 | base58 | m/44'/501'/0'/0' |
| Bitcoin | secp256k1 | BIP-84 bech32 | m/84'/0'/0'/0/0 |
| Cosmos | secp256k1 | bech32 | m/44'/118'/0'/0/0 |
| Tron | secp256k1 | base58check | m/44'/195'/0'/0/0 |
| TON | Ed25519 | raw/bounceable | m/44'/607'/0' |
| Sui | Ed25519 | 0x + BLAKE2b-256 hex | m/44'/784'/0'/0'/0' |
| XRPL | secp256k1 | Base58Check (r...) |
m/44'/144'/0'/0/0 |
| Spark (Bitcoin L2) | secp256k1 | spark: prefixed | m/84'/0'/0'/0/0 |
| Filecoin | secp256k1 | f1 base32 | m/44'/461'/0'/0/0 |
| NEAR | Ed25519 | implicit hex (64 chars) | m/44'/397'/0' |
Architecture
Agent / CLI / App
│
│ OWS Interface (SDK / CLI)
▼
┌─────────────────────┐
│ Access Layer │ 1. Caller invokes sign()
│ ┌────────────────┐ │ 2. Policy engine evaluates for API tokens
│ │ Policy Engine │ │ 3. Key decrypted in hardened memory
│ │ (pre-signing) │ │ 4. Transaction signed
│ └───────┬────────┘ │ 5. Key wiped from memory
│ ┌───────▼────────┐ │ 6. Signature returned
│ │ Signing Core │ │
│ │ (in-process) │ │ The OWS API never returns
│ └───────┬────────┘ │ raw private keys.
│ ┌───────▼────────┐ │
│ │ Wallet Vault │ │
│ │ ~/.ows/wallets/ │ │
│ └────────────────┘ │
└─────────────────────┘
Documentation
The full spec and docs are available at openwallet.sh and in the GitHub repo.
License
MIT
2 maintainers
Metadata
2 maintainers
Release files for open-wallet-standard 1.4.2
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