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A simple yet robust API client for Robinhood

Project description


A simple yet robust API client for Robinhood

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NOTE - changes coming with version >= 1.0

Sometime during Spring 2019, Robinhood changed how their API handles authentication. In order to adapt to those changes, I've moved "authentication" outside this library to fast_arrow_auth,

Please see:

  • issue 35 for a detailed account of the issue
  • this comment for the approach I've taken to remediate auth issues
  • this PR for a run down on exact code changes

I will be releasing these changes under version 1.0.0 to follow semantic version guidelines (since auth changes are incompatible API changes).


from fast_arrow import Client, Stock, OptionChain, Option

# new auth process as of 1.0.0.rc1
# get auth_data (see
with open("fast_arrow_auth.json") as f:
    auth_data = json.loads(

# initialize client with auth_data
client = Client(auth_data)

# fetch the stock info for TLT
symbol = "TLT"
stock = Stock.fetch(client, symbol)

# get the TLT option chain
stock_id = stock["id"]
option_chain = OptionChain.fetch(client, stock_id)

# let's get TLT options (calls and puts) for next 4 expiration dates
oc_id = option_chain["id"]
eds = option_chain['expiration_dates'][0:3]

# get all options on the TLT option chain
ops = Option.in_chain(client, oc_id, expiration_dates=eds)

# merge in market data fro TLT option instruments (ask, bid, delta, theta, etc)
ops = Option.mergein_marketdata_list(client, ops)


Install the package from pypi,

pip install fast_arrow

design principles

You might be asking, "yet another Robinhood client? There's already a few out there. What's different about this one?"

fast_arrow holds to these design principles,

  • focus on simple features that expose data. Don't interpret data.
  • make stock & option operations easy to talk about and do with code
  • organize code in small and discrete python classes
  • use fast_arrow_auth to handle authentication process


Here's what you can do with fast_arrow (some features still in development)


  • [x] get quotes
  • [ ] fetch historical data
  • [x] fetch all stock trades
  • [ ] submit orders
  • [ ] fetch earning events (past and future)
  • [ ] fetch company news articles
  • [ ] fetch company fundamentals
  • [ ] fetch popularity data


  • [x] fetch option quotes (example)
  • [x] fetch open option positions (example)
  • [x] fetch all option orders (filled, canceled, rejected)
  • [x] fetch historical options data (example)
  • [x] fetch option events (example)
  • [ ] generate option strategy orders
  • [ ] generate humanized names for option strategies
  • [x] submit order (example)
  • [x] cancel order (example)
  • [x] replace order (example)


  • [x] fetch historical value of portfolio (example)


  • [x] Authentication has moved to fast_arrow_auth.
  • [x] pin SSL certificate (see this PR)
  • [x] automatically refreshes oauth2

Want to propose a feature? Open a feature request or open a Pull Request.


Install pipenv, and then run,

pipenv install --dev

Run the test suite via,

make test

Run all the examples (make sure you add username/password to config.debug.ini),


Run the test suite against a specific python version,

pipenv run tox -e py36


Adding so I don't forget the next time I release a version,

python sdist bdist_wheel
twine upload dist/*

supporting libraries

projects using fast_arrow

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