synpath
One open-source API for prediction markets. Trade Kalshi, Polymarket, Polymarket US and Opinion with one Python SDK: unified market data, smart order routing across venues, and advanced order types. Plus tick-level Kalshi order book history.
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GITHUB · launched Sep 28, 2026 · 34 upvotes (top 24%) · 1 view
Niche: prediction market platforms · 44 launches, 2 in the last 7 days · Explore this niche →
Category and tags
- Fintech
- Data infrastructure
- Developer
- Not AI
- Commercial product
- algorithmic-trading
- ccxt
- kalshi
- market-data
- order-book
- polymarket
- +5 more
Visit website ↗ Source listing ↗
More like this: all 44 launches in prediction market platforms →
Could you build this?
Partial A unified REST/WebSocket wrapper around prediction market APIs is straightforward, but maintaining tick-level order book historical ingestion and cross-venue smart order routing requires serious low-latency data infrastructure.
What it would actually take: Built with Python/Rust, TimescaleDB or ClickHouse for tick-level storage, and WebSocket feeds to Kalshi and Polymarket (including Web3 signing/EVM interactions). The challenge lies in normalized cross-venue order matching algorithms, slippage calculation across different market maker styles, and recording massive sub-second tick feeds without dropping packets.
Competitors
Other products that read as similar to this one : 189 launches clear the similarity bar, closest 8 shown.
Attention rank: #36 of 190 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 334 days after the earliest competitor.
- Predictefy · ph · 2026-09-30 · 1 upvotes · similarity 0.67
- Layer · hn · 2026-10-08 · 5 upvotes · similarity 0.62
- prediction-market-arbitrage-trading-bot · github · 2026-09-27 · 25 upvotes · similarity 0.61
- Dome - A unified API for prediction markets · yc · 2025-10-29 · 68 upvotes · similarity 0.52
- kalshi-trading-bot · github · 2026-09-17 · 51 upvotes · similarity 0.51
- Valence: Unified prediction markets trading platform · yc · 2026-03-05 · 12 upvotes · similarity 0.50
- ArbTrader · ph · 2026-10-29 · 1 upvotes · similarity 0.49
- MarketAtlas · github · 2026-11-09 · 26 upvotes · similarity 0.48
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.