Poly-Kalshi Arb Bots Flood GitHub; PMXT Hits 1.9K Stars

A unified prediction market API called PMXT has emerged as the most-starred Polymarket-adjacent project on GitHub with 1,915 stars and 225 forks, signaling serious developer consolidation around cross-platform trading infrastructure. Meanwhile, at least six distinct Polymarket-Kalshi arbitrage repositories were identified today, suggesting sustained operator interest in exploiting cross-platform price gaps on BTC and SOL 15-minute markets.

GitHub Intelligence: 2026-06-24

Lead Story: PMXT Is Becoming the Standard Rail

The most significant signal in today's feed is **pmxt-dev/pmxt**, a unified trading API positioning itself as 'CCXT for prediction markets.' With 1,915 stars and 225 forks since its January 2026 launch, it has accumulated genuine developer traction by any reasonable measure. PMXT abstracts away the API differences between Polymarket and Kalshi, lowering the barrier to deploy strategies across both venues simultaneously. Operators who are not yet monitoring this project should be. As liquidity tooling standardizes around a single library, execution speed advantages that once required custom integrations will compress. The relevant question is no longer whether cross-platform bots will proliferate — it is how quickly the edge from running them will disappear.

Arb Bot Cluster: Six Repos, One Crowded Trade

Today's scan surfaced six repositories targeting Polymarket-Kalshi arbitrage specifically, covering BTC 15-minute markets, SOL price prediction markets, and generic cross-platform spread capture. The named projects include **haoo99/Polymarket-Kalshi-Arbitrage-Bot**, **samuel483/poly-kalshi-arb**, **Crayz916/prediction-market-arbitrage-bot**, **kmjjjj/polymarket-arbitrage-bot-btc-sol-15m**, **lufegaga/kalshi-polymarket-arbitrage-trading-bot**, and **Rolymarket/Polymarket-Arbitrage-Trading-Bot-Python**.

The Rolymarket repo deserves a specific flag: its description is a verbatim keyword-stuffed repetition of the phrase 'polymarket arbitrage trading bot python,' a clear spam or SEO-farming pattern. The repository is 23KB total, which rules out any substantive codebase. Operators should treat it as noise and ignore any claims associated with it.

The more credible entries — samuel483 and haoo99 in particular — have small but non-zero fork counts, suggesting at least some downstream usage. The clustering of these repos around the same underlying market structure (BTC/SOL 15-minute price bins) implies that any genuine arb opportunity in those markets is now well-known. Spreads, if they exist, are likely already thin or transient.

Weather Markets: A Quieter Edge

**BallesJr/polymarket-weather-edge** is worth monitoring for a different reason. The project specifically targets temperature markets, using live METAR observations and Open-Meteo forecasts fed into a Gaussian probability model to identify overpriced NO-side positions. This is a narrower, more defensible niche than BTC arb — fewer operators are running systematic weather models against Polymarket pricing, and the information inputs are public but require non-trivial integration. The repo is paper-trading only at present, but the architecture described suggests a legitimate research approach.

Scalping Infrastructure: Emalaman Dashboard

**emalaman/scalping-strategy-dashboard** at 91,974KB is unusually large for what is described as a dashboard project. The size likely reflects bundled data or pre-trained model weights. Attributed to 'Emil_IA,' this project was updated today and has a small but present fork count. Scalping on prediction markets carries meaningful execution risk given CLOB latency and gas costs on Polygon — operators considering this approach should account for those frictions before assuming equity-market scalping logic transfers cleanly.

Security Alert: King102681/polymarket-bot

**King102681/polymarket-bot** should be treated with extreme caution. The repository has zero stars, zero forks, no description, and a file size of 597,707KB — nearly 600MB. This is anomalous. Legitimate trading bots do not require that footprint. The pattern is consistent with either a bundled binary payload or a repository used as a file host. Do not clone or execute anything from this repository.

Operator Takeaways

**PMXT** is the infrastructure project most likely to reshape how serious operators interact with both Polymarket and Kalshi. Monitor its release cadence.
**BTC 15-minute arb** is a crowded, likely thin-margin trade. New entrants should model execution costs carefully before committing capital.
**Weather markets** represent an underexplored systematic edge for operators with meteorological data pipelines.
**Avoid King102681/polymarket-bot** entirely. Flag it internally if your team runs automated repo scanning.