Python client for dYdX (v3 API).

The library is currently tested against Python versions 2.7, 3.4, 3.5, 3.6, 3.9, and 3.11.

Installation

The dydx-v3-python package is available on PyPI. Install with pip:

pip install dydx-v3-python

Getting Started

The Client object can be created with different levels of authentication depending on which features are needed. For more complete examples, see the examples directory, as well as the integration tests.

Public endpoints

No authentication information is required to access public endpoints.

from dydx3 import Client
from web3 import Web3

#
# Access public API endpoints.
#
public_client = Client(
    host='http://localhost:8080',
)
public_client.public.get_markets()

Private endpoints

One of the following is required:

• api_key_credentials
• eth_private_key
• web3
• web3_account
• web3_provider

#
# Access private API endpoints, without providing a STARK private key.
#
private_client = Client(
    host='http://localhost:8080',
    api_key_credentials={ 'key': '...', ... },
)
private_client.private.get_orders()
private_client.private.create_order(
    # No STARK key, so signatures are required for orders and withdrawals.
    signature='...',
    # ...
)

#
# Access private API endpoints, with a STARK private key.
#
private_client_with_key = Client(
    host='http://localhost:8080',
    api_key_credentials={ 'key': '...', ... },
    stark_private_key='...',
)
private_client.private.create_order(
    # Order will be signed using the provided STARK private key.
    # ...
)

Onboarding and API key management endpoints

One of the following is required:

• eth_private_key
• web3
• web3_account
• web3_provider

#
# Onboard a new user or manage API keys, without providing private keys.
#
web3_client = Client(
    host='http://localhost:8080',
    web3_provider=Web3.HTTPProvider('http://localhost:8545'),
)
web3_client.onboarding.create_user(
    stark_public_key='...',
    ethereum_address='...',
)
web3_client.eth_private.create_api_key(
    ethereum_address='...',
)

#
# Onboard a new user or manage API keys, with private keys.
#
web3_client_with_keys = Client(
    host='http://localhost:8080',
    stark_private_key='...',
    eth_private_key='...',
)
web3_client_with_keys.onboarding.create_user()
web3_client_with_keys.eth_private.create_api_key()

Using the C++ Library for STARK Signing

By default, STARK curve operations such as signing and verification will use the Python native implementation. These operations occur whenever placing an order or requesting a withdrawal. To use the C++ implementation, initialize the client object with crypto_c_exports_path:

client = Client(
    crypto_c_exports_path='./libcrypto_c_exports.so',
    ...
)

The path should point to a C++ shared library file, built from Starkware's crypto-cpp library (CMake target) for the particular platform (e.g. Linux, etc.) that you are running your trading program on.

Running tests

If you want to run tests when developing the library locally, clone the repo and run:

pip install -r requirements.txt
docker-compose up # In a separate terminal
V3_API_HOST=<api-host> tox

NOTE: api-host should be https://api.stage.dydx.exchange to test in staging.