Caliber Engine for Interactive Brokers.
Interactive Brokers gives you the deepest, lowest-cost execution in retail. Caliber Engine gives you the brain that uses it. Connect IBKR once, set your capital, and let an autonomous AI trade your strategy through the broker that institutions already trust.
How Caliber Engine works with IBKR
Three steps from connected to autonomous on Interactive Brokers.
Connect IBKR through a secure bridge
Caliber Engine links to your Interactive Brokers account through a webhook bridge. Your IBKR credentials stay with the bridge, your funds stay with IBKR — the engine only sends trade instructions.
Allocate capital and risk
Choose how much of your IBKR balance the engine can deploy, set your maximum drawdown, and pick the symbol universe. Adjust or pause anytime from your dashboard.
Hands-free execution on IBKR
Caliber Engine evaluates the market, sizes positions, manages stops, and routes orders directly to your IBKR account. You watch every decision in real time — but you never have to make one.
Why IBKR traders choose Caliber Engine
Institutional-grade execution
IBKR's smart order routing meets an AI that decides what to trade and when. The combination is hard to beat for retail.
Lower friction, higher discipline
IBKR's tight spreads and low commissions make systematic trading actually work. The engine adds the discipline most traders lack.
No platform to babysit
TWS is powerful but it does not trade for you. Caliber Engine does — autonomously, with full visibility from your dashboard.
Your capital stays at IBKR
Caliber Engine never holds your money. Every dollar stays inside your Interactive Brokers account, where it already is.
Built for the most powerful retail brokerage
Interactive Brokers is the broker most professional retail traders end up at — for good reason. The execution is institutional, the costs are low, and the API is robust. The catch is that IBKR does not trade for you. Caliber Engine fills that gap with an autonomous AI engine, powered by Anthropic Claude, that reads market regime, evaluates probability, sizes positions, and manages risk on your behalf.
Once you connect IBKR through the bridge, the engine handles the entire trade lifecycle: scanning the universe, deciding when to act, opening positions, setting stops, taking partial profits, trailing the runner, and closing out. Each outcome is logged so the engine's next decision benefits from the last one. You see every trade in your dashboard, but you do not need to approve any of them — the engine runs autonomously inside the limits you set.
If you already trust Interactive Brokers with your capital, Caliber Engine is the most natural way to scale your trading without scaling your screen time.
Common Questions
Further reading
Background from the Caliber blog on the topics behind this page.
How to Automate Interactive Brokers Trading Without Building a Bot
A practical guide to wiring Interactive Brokers up for automated execution: the API options, the gotchas, and how to skip the engineering entirely.
How Caliber Engine Reasons About a Trade
A walkthrough of the steps Caliber Engine takes between a market signal and a routed order, including where the model defers to your rules.
Other brokers we support
Explore more brokers Caliber Engine connects to.