Copy trading
Polymarket copy-trading bots
Bots that mirror tracked Polymarket wallets, with how they follow trades, what they cost to run and where they lag the wallet they copy.
Checked September 8, 2026 · every price read off the live site
Every copy trading bot
3 reviewed · alphabetical-
12OctoBot prediction module The established OctoBot project's Polymarket module: copy trading now, arbitrage under development. Beware the typosquatted lookalike repos.
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| Bot | Venues | Pricing | Type |
|---|---|---|---|
| OctoBot prediction module | Polymarket | Open source (GPL-3.0) | bot |
| Polymarket-betting-bot | Polymarket | Open source. | bot |
| Prediction Markets Trading Bot Toolkits | Polymarket | Open source (MIT). | bot |
How these bots work
Copy-trading bots mirror another wallet's fills on Polymarket at a ratio you set. Polymarket's on-chain transparency makes the target wallet visible; the bot supplies the watching, the sizing and the retry logic. Kalshi has no public wallet feed, so this category is Polymarket only.
The edge is entirely in wallet selection, which no bot here does for you. What the bots differ on is custody (keys on your machine or on a server), packaging (binary, Docker, desktop app, API), and safety (dry-run defaults, circuit breakers, per-wallet caps).
Latency is the structural cost. You fill after the wallet you follow, on the same thin book, at a worse price.
How to choose
- Self custody. OctoBot and the Harrier toolkit keep keys local; Polymarket-betting-bot stores encrypted keys in MongoDB on a server.
- Dry run by default and a circuit breaker that halts on abnormal bursts.
- Sizing controls: ratio, minimum and maximum bet, per-wallet caps, and what happens on a partial sell.
- Multi-wallet support if you want to diversify across targets.
- Feature status. OctoBot's README marks its copy-trading budget and whitelist as work in progress.
Questions about copy trading bots
What is the best Polymarket copy trading bot?
HarrierOnChain's Rust toolkit has the most stars (434), a prebuilt binary and a circuit breaker, and calls copy trading its one production-ready strategy. MrFadiAi's bot adds filtered copying among four strategies.
Can I copy trade on Kalshi?
Not with these bots. Kalshi does not expose wallet-level trades the way Polymarket's chain does.
Is Polymarket copy trading profitable?
None of the bots publishes results. Your outcome is the target wallet's edge minus your fill lag on thin books.
Bots die in execution. Terminals are execution.
Wanted a bot for speed and cross-venue vision? The free Kairos terminal trades Kalshi, Polymarket and Predict.fun from one book, no keys to manage.