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CCXT for prediction markets. PMXT is a unified API for trading on Polymarket, Kalshi, and more.

1,831 starsTypeScript

DomeAPI (YC F25) was acquired. pmxt is the open-source equivalent

Name: DomeAPI (YC F25) was acquired. pmxt is the open-source equivalent
Availability: InStock
Author: SamTinnerholm

by SamTinnerholm·Feb 21, 2026·4 points·0 comments

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AI Analysis

●●●BangerSolve My ProblemDark Horse

CCXT for prediction markets—fills real void left by DomeAPI acquisition.

Strengths

•Solves immediate market fragmentation pain after DomeAPI's acquisition and closure.
•Actively maintained with 676 GitHub stars and real exchange integrations shipping.
•Unified abstraction eliminates lock-in to single exchange API, enabling cross-market strategies.

Weaknesses

•Niche audience limited to active prediction market traders; smaller ecosystem than crypto CCXT.
•Dependent on maintaining parity with rapidly-evolving prediction market platforms and their APIs.

Post Description

Hi HN, I'm the maintainer of pmxt.

With Polymarket's recent acquisition of DomeAPI to bring their infrastructure in-house, there is a sudden gap for developers building cross-market arbitrage bots, tracking whale wallets, or running quantitative models across prediction markets. If you are trading across Polymarket, Kalshi, or Limitless, you need a unified API to avoid getting locked into a single exchange's ecosystem.

pmxt is stepping in to fill that void.