How Caliber Engine works with Apex
Three steps from a fresh Apex evaluation to autonomous, rule-aware execution.
Connect your Apex account
Link your Apex evaluation or funded account through a webhook bridge that supports futures execution. Your account stays with Apex — the engine only sends instructions.
Configure for Apex's rules
Set your daily loss limit, trailing drawdown buffer, max contracts, and consistency targets. The engine treats these as absolute constraints — it cannot trade outside them.
The engine takes the desk
Caliber Engine scans, decides, sizes, and manages every trade in your Apex account autonomously. You watch from your dashboard.
Why Apex traders choose Caliber Engine
Built around prop firm constraints
Daily loss limits, trailing drawdown, contract caps, consistency targets — the engine treats them as hard rules, not guidelines.
Discipline kills evaluations less often
Most evaluations fail because of emotion. The engine has none. Same plan, same sizing, every trade.
Trade while you sleep, work, or live
Apex evaluations move with the market. The engine runs your account during the hours you cannot.
Pause or disconnect anytime
Hit your daily target? Pause from the dashboard. Want to trade manually for a day? Disconnect. You stay in control.
Designed to respect Apex Trader Funding's rules
Apex Trader Funding is one of the most popular paths to a funded futures account, but the failure rate is brutal — and most of those failures come from violating drawdown rules, blowing through daily loss limits, or breaking consistency targets. Caliber Engine is built to respect those rules absolutely. You configure your daily loss limit, your trailing drawdown buffer, your max contract size, and your consistency target on signup. The engine cannot trade outside those constraints. There is no override.
Powered by Anthropic Claude, the engine evaluates each setup with the same discipline a seasoned prop trader would apply. It sizes contracts to your account size, manages stops mechanically, takes partial profits, and trails runners. Every outcome is logged so the engine's next decision benefits from the last one. The result is a trading process that does not break under pressure — because it has none.
Caliber Engine is designed to comply with Apex Trader Funding's published rules at the time of writing. Apex's rules can and do change. You should always verify your firm's current rules on the Apex Trader Funding website before connecting any automation, including Caliber Engine. Caliber Engine cannot guarantee passing any evaluation, and is not affiliated with Apex Trader Funding.
Common Questions
Further reading
Background from the Caliber blog on the topics behind this page.
Apex Trader Funding Rules: A Plain-English Reference
A concise reference for the rules that actually matter at Apex Trader Funding, written for traders who want to focus on trading, not legalese.
Trailing Drawdown, Explained for Funded Traders
Trailing drawdown is the rule that ends most funded accounts. Here's how it works, how it differs across firms, and how to size around it.
Other prop firms we support
Explore more prop firms Caliber Engine connects to.