open-wallet-standard/core/ows

Name: ows
Author: open-wallet-standard

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Secure, local-first multi-chain wallet management — create wallets, derive addresses, sign messages and transactions across EVM, Solana, XRPL, Sui, Bitcoin, Cosmos, Tron, TON, Spark, Filecoin, Nano, NEAR, and Cardano via CLI, Node.js, or Python.

Install

npx vskill@latest install open-wallet-standard/core/ows

SKILL.md

OWS — Open Wallet Standard

Secure, offline-first multi-chain wallet management. Private keys are encrypted at rest (AES-256-GCM, scrypt KDF) and decrypted only after policy checks pass, then immediately wiped from memory — the caller never sees the raw key.

Available as CLI, Node.js SDK (@open-wallet-standard/core), and Python SDK (open-wallet-standard).

When to use

Use this skill when the user asks to:

Create, import, list, delete, or manage crypto wallets
Derive blockchain addresses from a mnemonic
Sign messages or transactions for EVM, Solana, XRPL, Sui, Bitcoin, Cosmos, Tron, TON, Spark, Filecoin, Nano, NEAR, or Cardano
Broadcast signed transactions to a chain
Generate BIP-39 mnemonic phrases
Fund a wallet with USDC (MoonPay) or check token balances
Make paid requests to x402-enabled API endpoints or discover x402 services
Create and manage policies for API key access control
Create, list, or revoke API keys for agent access to wallets
Work with @open-wallet-standard/core or open-wallet-standard in code

Supported Chains

Chain	Parameter	Curve	Address Format
EVM (Ethereum, Polygon, Base, etc.)	`evm`	secp256k1	EIP-55 checksummed
Solana	`solana`	Ed25519	base58
Bitcoin	`bitcoin`	secp256k1	BIP-84 bech32
Cosmos	`cosmos`	secp256k1	bech32
Tron	`tron`	secp256k1	base58check
TON	`ton`	Ed25519	raw/bounceable
Sui	`sui`	Ed25519	0x + BLAKE2b-256 hex
Spark (Bitcoin L2)	`spark`	secp256k1	spark: prefixed
XRPL	`xrpl`	secp256k1	Base58Check (`r...`)
Filecoin	`filecoin`	secp256k1	f1 secp256k1
NEAR	`near`, `near-testnet`	Ed25519	implicit hex (64 chars)
Cardano	`cardano`	Ed25519-BIP32 (CIP-1852)	Shelley Bech32 base (`addr1…`)

Installation

bash

# CLI (one-liner)
curl -fsSL https://docs.openwallet.sh/install.sh | bash
 
# Node.js SDK (global install also provides the ows CLI)
npm install @open-wallet-standard/core
 
# Python SDK
pip install open-wallet-standard

CLI

Wallet Management

bash

# Create (--show-mnemonic to display the phrase for backup)
ows wallet create --name "my-wallet"
ows wallet create --name "my-wallet" --words 24 --show-mnemonic
 
# Import from mnemonic (via stdin or OWS_MNEMONIC env)
echo "goose puzzle decorate ..." | ows wallet import --name "imported" --mnemonic
 
# Import from private key (via stdin or OWS_PRIVATE_KEY env)
echo "4c0883a691..." | ows wallet import --name "from-evm" --private-key
echo "9d61b19d..." | ows wallet import --name "from-sol" --private-key --chain solana
 
# Import explicit keys for all three curves (via env vars)
OWS_SECP256K1_KEY="4c0883a691..." OWS_ED25519_KEY="9d61b19d..." OWS_ED25519_BIP32_KEY="cafe..." \
  ows wallet import --name "all-curves"
 
# List / info / export / delete / rename
ows wallet list
ows wallet info
ows wallet export --wallet "my-wallet"
ows wallet delete --wallet "my-wallet" --confirm
ows wallet rename --wallet "my-wallet" --new-name "treasury"

Signing

The --wallet flag can also be set via OWS_WALLET env var. Use --json for structured output, --index N to select an HD account index, and optional --address that will be used to sign the message (e.g. stake/base/enterprise address on Cardano).

bash

# Sign a message
ows sign message --wallet "my-wallet" --chain evm --message "hello world"
ows sign message --wallet "my-wallet" --chain solana --message "hello" --json
 
# Sign a message with EIP-712 typed data (EVM only)
ows sign message --wallet "my-wallet" --chain evm --message "" --typed-data '{"types":...}'
 
# Sign a raw transaction
ows sign tx --wallet "my-wallet" --chain evm --tx "02f8..."
 
# Sign and broadcast
ows sign send-tx --wallet "my-wallet" --chain evm --tx "02f8..." --rpc-url "https://..."

Funding

bash

# Create a MoonPay deposit (auto-converts to USDC on target chain)
ows fund deposit --wallet "my-wallet" --chain base --token USDC
 
# Check token balances
ows fund balance --wallet "my-wallet" --chain base

Payments (x402)

bash

# Make a paid request to an x402-enabled API endpoint
ows pay request https://api.example.com/data --wallet "my-wallet"
ows pay request https://api.example.com/data --wallet "my-wallet" --method POST --body '{"key":"value"}'
 
# Discover x402-enabled services from the Bazaar directory
ows pay discover
ows pay discover --query "weather" --limit 10

Policies

bash

# Register a policy from a JSON file
ows policy create --file policy.json
 
# List / show / delete policies
ows policy list
ows policy show --id "policy-id"
ows policy delete --id "policy-id" --confirm

API Keys

bash

# Create an API key for agent access (scoped to wallets + policies)
ows key create --name "claude-agent" --wallet "my-wallet" --policy "policy-id"
ows key create --name "tmp-key" --wallet "my-wallet" --expires-at "2026-04-01T00:00:00Z"
 
# List all API keys (tokens are never shown)
ows key list
 
# Revoke an API key
ows key revoke --id "key-id" --confirm

Mnemonic Utilities

bash

ows mnemonic generate --words 12
OWS_MNEMONIC="word1 word2 ..." ows mnemonic derive --chain evm

System

bash

ows update            # Update to latest version
ows update --force    # Force re-download
ows uninstall         # Remove CLI (keep wallet data)
ows uninstall --purge # Remove CLI + all wallet data
ows config show       # Show config and RPC endpoints

Node.js SDK

npm install @open-wallet-standard/core — native NAPI bindings, Rust core runs in-process.

Quick start:

javascript

import { createWallet, signMessage } from "@open-wallet-standard/core";
const wallet = createWallet("my-wallet");
const sig = signMessage("my-wallet", "evm", "hello world");

Full API reference, types, and examples: see {baseDir}/references/node.md

Python SDK

pip install open-wallet-standard — native PyO3 bindings, Rust core runs in-process.

Quick start:

python

from open_wallet_standard import create_wallet, sign_message
wallet = create_wallet("my-wallet")
sig = sign_message("my-wallet", "evm", "hello world")

Full API reference, return types, and examples: see {baseDir}/references/python.md

Vault Layout

~/.ows/
  bin/
    ows                    # CLI binary
  wallets/
    <uuid>/
      wallet.json          # Encrypted keystore (AES-256-GCM, scrypt KDF)
      meta.json            # Name, chains, created_at
  policies/
    <id>.json              # Policy definitions
  keys/
    <id>.json              # API key metadata (token hash, scoped wallets/policies)

Security Model

Keys encrypted at rest with AES-256-GCM (scrypt N=2^16, r=8, p=1)
Keys decrypted only after policy checks pass, then immediately wiped from memory
Caller never sees raw private key during signing
Optional passphrase adds second encryption layer
Universal wallets: single mnemonic derives addresses for all supported chains via BIP-44 HD paths
API keys use HKDF-SHA256 for token-based decryption; tokens shown once at creation, only hashes stored

Security

Security scanPassed, 95 of 100Pattern checks on the skill's files.
Model reviewPassed

See the full security report

Quality evaluation

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Source

SKILL.md in the repositoryCheckingskills/ows/SKILL.md

Popularity

Repository stars: 368
Repository forks: 95
7-day trend score: 30

Stars and forks are for the whole GitHub repository, not this skill alone. Refreshed 18 Aug 2026, 2 months ago.

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