Markets and trading · Independent · 23 Oct 2026

massive-com/client-python

The official Python client library for the Massive.com REST and WebSocket API.

← Markets and trading
Massive Python Client. Official SDK for stock data and feeds.

In simple English

This is a pre-written set of helper tools for Python developers. It lets your program talk to the Massive financial data service. You can download stock prices, trade records and real-time feeds without writing low-level network code. It is free to download, but you need a paid or free account on the data service to make it work. You must also write your own Python code to use it.

What it is

An official Python software development kit that wraps both REST and WebSocket endpoints for financial data. It manages pagination, connection retries and proxy settings automatically.

What it is good for

Python programmers who want to pull historical stock data, options chains or live ticker streams into their own trading bots or analysis scripts without building custom API calls.

Stars1.5k
LicenceMIT
Latestv2.9.0 (2026-10-16)checked 23 Oct 2026
Last code change2026-10-20
Written inPython
Setup effort
2 / 5
Payoff
4 / 5
Good
  • Handles multi-page API responses automatically behind the scenes.
  • Supports secure web socket connections for real-time market data streaming.
  • Includes built-in support for corporate proxies and custom certificate authorities.
Watch for
  • Requires Python 3.10 or higher and an active account with the data provider.
  • Free tier data has strict rate limits that can block your script.
  • Requires coding knowledge to set up, query and process returned data.
Replaces

Writing raw HTTP requests and WebSocket handlers for financial APIs from scratch.

Works well with

Pandas for data analysis and SQLite for storing historical stock prices.

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Install
source venv/bin/activate
pip install -U massive

Independent: reviewed for Repo Radar outside the daily editions. Every independent repository

On Stack Radar: Trading & Investing › Market Data & Connectivity › Market Data APIs.

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