paradex_py 0.6.3

Paradex Python SDK

Paradex Python SDK

Paradex Python SDK provides a simple interface to interact with the Paradex REST and WS API.

Examples

L1 + L2 Authentication (Traditional)

from paradex_py import Paradex
from paradex_py.environment import Environment

paradex = Paradex(env=Environment.TESTNET, l1_address="0x...", l1_private_key="0x...")
print(hex(paradex.account.l2_address)) # 0x...
print(hex(paradex.account.l2_public_key)) # 0x...
print(hex(paradex.account.l2_private_key)) # 0x...

L2-Only Authentication (Subkey)

from paradex_py import ParadexSubkey
from paradex_py.environment import Environment

# Use ParadexSubkey for L2-only authentication
paradex = ParadexSubkey(
    env=Environment.TESTNET,
    l2_private_key="0x...",
    l2_address="0x..."
)
print(hex(paradex.account.l2_address)) # 0x...
print(hex(paradex.account.l2_public_key)) # 0x...
print(hex(paradex.account.l2_private_key)) # 0x...

WebSocket Usage

The SDK provides two WebSocket client options:

Option 1: Async Client (Default)

Use the async client when you're comfortable with asyncio and need maximum performance:

async def on_message(ws_channel, message):
    print(ws_channel, message)

await paradex.ws_client.connect()
await paradex.ws_client.subscribe(ParadexWebsocketChannel.MARKETS_SUMMARY, callback=on_message)

Option 2: Threaded Client (Synchronous)

Use the threaded client for simpler integration without asyncio knowledge:

from paradex_py.api.ws_client_threaded import ThreadedParadexWebsocketClient
from paradex_py.api.ws_client import ParadexWebsocketChannel
from paradex_py.environment import TESTNET

# Simple synchronous usage - no asyncio required
ws_client = ThreadedParadexWebsocketClient(env=TESTNET)

with ws_client:
    ws_client.subscribe(ParadexWebsocketChannel.MARKETS_SUMMARY)

    # Blocking call - waits for messages
    msg = ws_client.get_updates(timeout=5.0)
    if msg:
        print(f"Channel: {msg.channel}, Data: {msg.data}")

When to use which:

Feature	Async Client	Threaded Client
Asyncio knowledge	Required	Not required
Integration	Async codebases	Synchronous codebases
Performance	Optimal	Good
Complexity	Higher	Lower
Runtime subscription	Via callbacks	Via subscribe() anytime

📖 For complete documentation refer to tradeparadex.github.io/paradex-py

💻 For comprehensive examples refer to following files:

• API (L1+L2): examples/call_rest_api.py
• API (L2-only): examples/subkey_rest_api.py
• WS Async (L1+L2): examples/connect_ws_api.py
• WS Threaded: examples/connect_ws_threaded.py
• WS (L2-only): examples/subkey_ws_api.py
• Transfer: examples/transfer_l2_usdc.py

Development

make install
make check
make test
make build
make clean-build
make publish
make build-and-publish
make docs-test
make docs
make help

Using uv

This project uses uv for managing dependencies and building. Below are instructions for installing uv and the basic workflow for development outside of using make commands.

Installing uv

uv is a fast and modern Python package manager. You can install it using the standalone installer for macOS and Linux:

curl -LsSf https://astral.sh/uv/install.sh | sh

For other installation methods, refer to the uv installation documentation.

Basic Workflow with uv

If you prefer not to use make commands, you can directly use uv for development tasks:

• Install dependencies: Sync your environment with the project's dependencies.

  uv sync
  

• Run tests: Execute the test suite using pytest within the uv environment.

  uv run pytest
  

• Build the project: Create a distribution package for the SDK.

  uv build
  

For more detailed information on using uv, refer to the uv documentation.

The CI/CD pipeline will be triggered when a new pull request is opened, code is merged to main, or when new release is created.

Notes

[!WARNING] Experimental SDK, library API is subject to change