Stop paying for Polymarket data. PMXT just open-sourced the orderbooks.
u/SammieStyles ·
Reddit — r/algotrading
· February 24, 2026 at 14:36
· ⬆ 160 pts
· 💬 22 comments
| View on Reddit ↗
AI Summary
Summary
The author, u/SammieStyles, announces the open-sourcing of Polymarket orderbook data via their project, PMXT. This is the first of three planned data releases.
The author's thesis is that charging developers for raw market data is a "scam" and that providing free, high-quality data will foster development and innovation in the algorithmic trading space, particularly for prediction markets.
Quality assessment: This is an announcement, not investment due diligence (DD). It provides a resource for traders but does not contain analysis or a specific investment thesis on any asset.
Score160
Comments22
Upvote %98%
▶ Full Post Text
We are officially dropping free orderbook data for polymarket today.
This is part 1/3 of our data dumps. It’s small, orderbooks only. We need to stress-test our pipelines before we release the full historical data, trade-level data, and other exchanges. We’re doing this because charging devs for raw market data is basically a scam at this point.
Grab the data:[https://archive.pmxt.dev/Polymarket](https://archive.pmxt.dev/Polymarket). It's powered entirely by pmxt.
Star the pmxt library: [https://github.com/pmxt-dev/pmxt](https://github.com/pmxt-dev/pmxt)