Market making tools for Kalshi and Polymarket, compared
7 public market making projects side by side. Stars and update dates come from GitHub and were checked on Oct 23, 2026.
Last updated . Most common tools: Python (6), Polymarket CLOB (2), Kalshi API (1), Jupyter (1), uv (1).
| Project | Platforms | Tools | Difficulty | GitHub stars | Repo updated |
|---|---|---|---|---|---|
| Simple Kalshi market maker | Kalshi | Python, Kalshi API | advanced | 417 | Apr 14, 2026 |
| Polymarket's reference market-maker keeper | Polymarket | Python, Polymarket CLOB | advanced | 327 | Jul 5, 2024 |
| Student market-making research on Kalshi | Kalshi | Jupyter, Python | intermediate | 86 | May 18, 2023 |
| Kalshi weather market making: NYC high-temperature replay and live trader | Kalshi | Python, uv, Kalshi public API, Iowa Environmental Mesonet data | advanced | 0 | Oct 20, 2026 |
| Polymarket market-making research with documented null results | Polymarket | Python, Polymarket CLOB API, statistical testing | advanced | 0 | Oct 19, 2026 |
| Polymarket Market Maker Lab: paper trading, backtests and a quoting prototype | Polymarket | Python, Tkinter, Polymarket CLOB client | intermediate | 0 | Oct 20, 2026 |
| polymarket-clob-infra: Rust order book, feed merge and EIP-712 signing for Polymarket's CLOB | Polymarket | Rust, Polymarket CLOB, WebSockets, EIP-712 | advanced | 0 | Oct 21, 2026 |
How to read this
Market makers quote both sides of a market, posting buy and sell limit orders and earning the spread while managing inventory. Entries here include reference implementations and research code.
Stars show popularity, not quality or profitability. Nothing here is financial advice. See each entry for its source, and the glossary for terms.
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