Connect to the WebSocket Stablecoin Price Feed

Open a WebSocket connection to the Sandbox USDCUSD feed.

Use the command line to open a WebSocket connection to the Sandbox USDCUSD stablecoin market price feed.

See the WebSocket API reference for more details.

➊ Install WebSocket Client

The quickest way to open a connection is by using wscat, which runs in the terminal. Using the Python websocket-client package requires a bit of code and the Python shell.

SHELL

Open the terminal and install wscat using the -g (global) flag.

npm install -g wscat

Ensure wscat is working. If you see the version number, the module is working:

wscat --version

PYTHON

Open the terminal and install the Python3 websocket-client library.

pip3 install websocket-client

Start the Python3 shell and check that websocket-client was installed correctly. If you don’t see a ModuleNotFoundError message, the library is installed.

python3
...
>>> import websocket
>>> 

Leave the terminal window open.

➋ Connect to Sandbox Feed

Open a long-lived connection to the Sandbox USDCUSD stablecoin market price feed.

SHELL

wscat --connect wss://ws.sandbox.paxos.com/marketdata/stablecoin/USDCUSD

PYTHON

>>> import websocket # From the previous step
>>> def on_message(wsapp, message):
...     print(message)
...
>>> wsapp = websocket.WebSocketApp("wss://ws.sandbox.paxos.com/marketdata/stablecoin/USDCUSD", on_message=on_message)
>>> wsapp.run_forever() # Press CTRL+C to quit

➌ Review Sandbox Feed

If everything worked, USDCUSD the pricing data streams to the terminal.

SHELL

Sandbox USDCUSD stablecoin market price feed (wscat)

Connected (press CTRL+C to quit)
{"market":"USDCUSD","price":"0.9996","timestamp":"2024-11-04T16:12:38.053038191Z"}

{"market":"USDCUSD","price":"0.9996","timestamp":"2024-11-04T16:12:39.080704227Z"}

{"market":"USDCUSD","price":"0.9996","timestamp":"2024-11-04T16:12:40.044403631Z"}

...

PYTHON

Sandbox USDCUSD stablecoin market price feed (websocket-client)

{"market":"USDCUSD","price":"0.9998","timestamp":"2024-11-04T17:23:50.050471826Z"}

{"market":"USDCUSD","price":"0.9998","timestamp":"2024-11-04T17:23:51.064565343Z"}

{"market":"USDCUSD","price":"1.0001","timestamp":"2024-11-04T17:23:52.05566422Z"}

...