Kalshi trading bot, built on the official exchange API.
An automated engine that places and manages event-contract orders on Kalshi for you. It streams the order book over WebSocket, runs your strategy and risk rules, and submits REST orders signed with your own API key — no manual clicking, no funds ever leaving your account.
Inside the Kalshi trading bot: six modules, one loop.
Each module does one job and hands off to the next on the same event loop. Every order is signed with your Kalshi API key — the engine never touches your login or your cash balance.
Market Feed
Subscribes to the Kalshi WebSocket for live order-book, ticker, and fill messages across the markets you track, with automatic reconnect and snapshot recovery.
Strategy
Turns each price update into a decision: value vs. fair-probability estimate, market-making spread, or threshold rules you set per market series.
Risk Gate
Per-trade size cap, daily-loss circuit breaker, max open positions, and a portfolio exposure budget — checked before any order is released.
Sizer
Bankroll-aware position sizing in contracts, capped by your allocation per series and the available depth at your limit price.
Order Router
Signs each REST order with your API key and places limit or immediate orders, with cancel-replace logic to chase fills without crossing thin books.
Monitor
Live latency, fill rate, realized P&L per strategy, and a full order log for review. Telemetry only — the engine trades correctly without it.
From price tick to placed order, in six hops.
The slowest hop is the network round-trip to Kalshi when the order is submitted. Everything between the WebSocket message and the signed REST call runs in the same loop.
Connect the Kalshi bot in four steps.
No code at the user layer. The flow is the same whether you trade a single weather market or a full book of event series. Every step is reversible and nothing is custodial.
Create a key
In your Kalshi account, generate an API key pair · the bot reads only what the key allows · revoke any time
Connect
Paste the key ID and private key · the bot signs requests locally · never your password
Configure
Pick market series · set per-trade caps · daily-loss limit · strategy rules
Activate
Workers spawn · risk gates arm · orders route to Kalshi on every trigger you defined
Strategy templates built for event contracts.
Each template ships with sensible defaults and is fully editable. They run against live Kalshi markets such as economics, weather, elections, and crypto-price series. Read the wider context on prediction markets and the venue itself on Kalshi.
Value
Compares the live YES/NO price to your own fair-probability estimate and places resting maker orders only when the edge clears a threshold you set.
Market making
Quotes both sides of a market around the mid, earning the spread while capping inventory with skew and a per-market position limit.
Threshold
Fires a YES or NO order when the price crosses a level you define — useful around scheduled data releases and event resolution windows.
Scale-in
Builds a position in tranches as price moves your way, instead of a single fill, to average into event series with thin top-of-book depth.
Mean revert
Fades sharp short-term moves back toward a reference price, with a hard stop so a real regime shift does not run against you.
Resolution timing
Manages exits as a market approaches resolution, taking profit or cutting risk before settlement instead of holding to the last cent.
Three plans. All non-custodial. All key-signed.
Billed monthly in USD. Your funds and your API key stay in your control. Cancel any time.
Starter
For traders automating a single Kalshi strategy with tight risk caps.
- 1 active strategy
- Up to 5 market series
- Per-trade cap + daily-loss limit
- Email support
Pro
For traders running several strategies across event series with active risk control.
- Up to 6 active strategies
- Unlimited market series
- Drawdown pause + exposure budget
- Priority support · full order log
Desk
For power users and small desks with custom risk policy and integrations.
- Unlimited strategies
- Custom risk policy engine
- Webhook + API integration
- Dedicated onboarding
What traders say about running it in production.
“I set per-trade caps and a daily-loss limit once, and the bot quotes my weather and economics markets while I am at work. The order log makes every decision auditable.”
“Connecting was just an API key — no password, no deposit anywhere. It places and cancels orders within my limits and that is the whole surface area. Exactly the trust model I wanted.”
“The market-making template earns the spread on thin event series I could never watch all day. The exposure budget stops correlated contracts from stacking up.”
Straight answers about automating Kalshi.
New to event-contract automation? Start with the basics below, then pick a plan that fits how many strategies you want to run.
See plansWhat is a Kalshi trading bot?
Is automated trading allowed on Kalshi?
Does the bot have access to my funds?
How fast does it execute?
How much does it cost?
What markets can it trade?
Can I run multiple strategies at once?
What are the risks?
From this page to your first automated Kalshi order in minutes.
Your key. Your funds. Your rules. The engine runs your strategy on Kalshi event contracts through your own API key — nothing custodial, every order logged.