🎁 Get the FREE AI Skills Starter Guide β€” Subscribe β†’
BytesAgainBytesAgain
BytesAgain β€Ί Skills β€Ί Polymarket Kalshi Divergence
πŸ¦€ ClawHub

Polymarket Kalshi Divergence

by @mibayy

Cross-platform arbitrage between Kalshi and Polymarket. Monitors 13 Kalshi event series (crypto, macro, politics) and compares prices to equivalent Polymarke...

Versionv2.0.5
Downloads816
#clawhub
TERMINAL
clawhub install polymarket-kalshi-divergence

πŸ“– About This Skill

name: polymarket-kalshi-divergence description: > Cross-platform arbitrage between Kalshi and Polymarket. Monitors 13 Kalshi event series (crypto, macro, politics) and compares prices to equivalent Polymarket markets. Generates BUY signals when gap exceeds 8% and SELL signals above 10%. metadata: author: "Mibayy" version: "2.0.5" displayName: "Kalshi-Polymarket Divergence Arb" type: "automaton" difficulty: "intermediate"

Kalshi-Polymarket Divergence Arb

Cross-platform price divergence trading between Kalshi and Polymarket.

What It Does

Polls Kalshi's public API for live prices across 13 event series and compares them to equivalent Polymarket markets found via SimmerClient. When prices diverge beyond threshold, the cheaper side is likely underpriced.

Covered Series

| Series | Category | Description | |--------|----------|-------------| | KXBTC, KXETH, KXSOL, KXXRP, KXDOGE | Crypto | Price threshold markets | | KXFED | Macro | Fed rate decisions | | KXCPI | Macro | CPI prints | | KXUNEMP | Macro | Unemployment data | | KXGLD, KXOIL | Commodities | Price threshold markets | | KXNASDAQ, KXSPY, KXINX | Indices | Index level markets |

Signal Logic

  • BUY - Polymarket price is >8% below Kalshi equivalent (Polymarket underpriced)
  • SELL - Polymarket price is >10% above Kalshi equivalent (Polymarket overpriced)
  • Asymmetric thresholds account for Polymarket's typically lower liquidity

    • Scheduling

    Runs every 5 minutes via cron (*/5 * * * *). Managed automaton (auto-executes on schedule). Dry-run by default. Pass --live to execute real trades.

    Requirements

    pip dependencies: simmer-sdk, requests

    Environment variables (required):

  • SIMMER_API_KEY - get from simmer.markets/dashboard

    • Environment variables (optional, all have defaults):

  • TRADING_VENUE - defaults to sim for paper trading, set to polymarket for real
  • KALSHI_BUY_THRESHOLD - minimum divergence to trigger BUY, defaults to 0.08 (8%)
  • KALSHI_SELL_THRESHOLD - minimum divergence to trigger SELL, defaults to 0.10 (10%)
  • KALSHI_TRADE_SIZE - trade size in USD, defaults to 20.0

    • Usage

    python kalshi_divergence.py                  # dry run (default, no trades)
python kalshi_divergence.py --live           # real trades via SimmerClient
python kalshi_divergence.py --live --quiet   # cron mode

    Trade Execution Path

    1. Fetches Kalshi public prices via HTTPS GET (no auth needed) 2. Finds matching Polymarket markets via SimmerClient.find_markets() 3. Compares prices, applies thresholds (BUY >8%, SELL >10%) 4. If --live: calls SimmerClient.trade() with market_id, side, amount, reasoning 5. If dry-run (default): logs the signal but does NOT execute any trade

    Security

  • All trades go through SimmerClient.trade() only. No direct CLOB or wallet access.
  • Only required credential is SIMMER_API_KEY. No other secrets needed.
  • No wallet private keys are required or read by this script.
  • Dry-run is the default. The --live flag must be explicitly passed to execute trades.

    • > Remixable Template: Fork this skill to add new Kalshi series, adjust > divergence thresholds, or add position sizing based on gap magnitude.

    πŸ’‘ Examples

    python kalshi_divergence.py                  # dry run (default, no trades)
python kalshi_divergence.py --live           # real trades via SimmerClient
python kalshi_divergence.py --live --quiet   # cron mode