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1 month ago
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predmarket is an asyncio-native python-based SDK that communicates directly with prediction markets (Kalshi and Polymarket).
Both Kalshi and Polymarket provide public-facing APIs with high rate limits. predmarket aims to unify these two APIs into one install, one format, and one library to learn. It aims to be abstract enough to be intuitive, but not lose any power of the individual APIs. So, any parameter in one of polymarket's API endpoints can be used as-is in predmarket.
uv add predmarket
from predmarket import PredMarket
from httpx import AsyncClient
async def main()
async with AsyncClient() as client:
# Initialize fetchers
kalshi = PredMarket(client, exchange="kalshi")
polymarket = PredMarket(client, exchange="polymarket")
# Fetch available Questions (e.g. "When will Elon Musk get to Mars?", events in native APIs)
kalshi_questions = await kalshi.fetch_questions()
polymarket_questions = await polymarket.fetch_questions(limit=10, asc=True) # Polymarket-specific query params
# Fetch available Contracts (e.g. "Will Elon Musk get to Mars before 2026?", these are individual "solutions" for a given question , Markets in native APIs)
kalshi_contracts = await kalshi.fetch_contracts()
polymarket_contracts = await polymarket.fetch_contracts() # Polymarket-specific query params
predmarket is under rapid development. Expect breaking changes unless indiciated otherwise.
