Frequently Asked Questions

Most traders break their own rules not because they lack discipline, but because willpower alone cannot override an emotional response in real time. During a live session — after a losing streak, a missed trade, or a sudden drawdown — the brain enters a stress-response state that impairs rational decision-making. At that moment, rules you wrote down calmly the night before feel negotiable.

This is why rule-breaking is not a knowledge problem. Traders already know the rules. It is a behavioral enforcement problem: the system that was supposed to keep you on track (your own willpower) is precisely the thing that gets disabled when it is needed most.

The only reliable solution is to remove the decision from that moment entirely. Meridian monitors your session in real time, detects when psychological pressure is rising — through seven behavioral signals like revenge entries, stop widening, and overtrading pace — and Guard triggers automated enforcement actions before you act on the impulse. The rules you set when you were objective get enforced even when you are not.

Revenge trading happens when a loss triggers an immediate, emotionally-driven re-entry — usually larger size, same direction, and within seconds or minutes of closing the losing trade. The trader is not responding to market conditions; they are responding to the feeling of having lost.

You cannot reliably stop revenge trading through awareness alone, because awareness is exactly what gets impaired in that state. The effective solution is automated behavioral enforcement before the next order goes in.

Meridian detects revenge-entry patterns in real time using its D1 signal (Revenge Entry), which flags rapid re-entry after a loss with elevated position size. When this signal fires, it can trigger Meridian Guard — the automated enforcement layer — to intervene with a countdown timer, an acknowledgement prompt, or a platform disconnect, depending on the rules you configured in advance.

You set the response level when you are calm. Guard executes it when you are not. See all seven behavioral signals, Guard trigger levels, or read the full breakdown: How Meridian detects and stops revenge trading in NinjaTrader 8.

Emotional trading decisions — chasing entries, moving stops, adding to losing positions, overtrading after a winner — share a common cause: the feedback loop between market outcome and psychological state is invisible until after the damage is done.

The standard advice (journal after the session, meditate, take breaks) treats the symptom after the fact. What actually works is making the feedback loop visible during the session, so you can act on it before the decision.

Meridian does this by calculating a real-time Psychological Stability Index (PSI) that updates after every fill, every stop modification, and every rule violation. You see a live score and seven behavioral signals — including overtrading pace, hold-time bias, and size spikes — while the session is still running.

When the score drops into the Caution or Critical zone, you have a concrete signal to pause, not a vague feeling. If you have Meridian Guard configured, the system can enforce a pause for you automatically.

Yes. Meridian is a native NinjaTrader 8 add-on that provides real-time psychological monitoring and automated risk enforcement directly inside the platform.

It does not require a separate application, an API connection, or any cloud service. Once installed, it runs alongside your existing NinjaTrader setup and monitors all connected accounts simultaneously.

Key capabilities inside NinjaTrader 8:

• Live PSI score updated in under 100ms after every fill
• Seven behavioral signals that detect patterns like revenge entries, stop widening, and overtrading pace
• Guard rules that can trigger alerts, countdown timers, acknowledgement prompts, or broker disconnection based on conditions you define (P&L limit, consecutive losses, PSI threshold, session time, and more)
• Session history stored locally on your machine — no data leaves your PC

Meridian works with all brokers and prop firm connections that NinjaTrader 8 supports, including Apex, Topstep, and direct brokerage accounts. See pricing to start a free trial.

A Psychological Stability Index (PSI) is a real-time composite score that measures how consistently a trader is behaving relative to their own declared rules and historical patterns during a live session.

Unlike P&L, which only tells you what happened, PSI tells you how you are behaving right now — before the next trade closes.

Meridian’s PSI runs from 0 to 100:

• Stable (88–100): Your behavior is consistent with your own session history. No significant stress signals are active.
• Caution (72–87): One or more behavioral patterns are building pressure. Worth pausing to reassess.
• Warning (55–71): Multiple behavioral patterns are active and the session is moving toward critical conditions. Strong prompt to slow down.
• Critical (0–54): Sustained psychological distress signals are present across multiple dimensions. Clear prompt to stop trading and review.

The score is calculated from seven independent behavioral dimensions — including revenge entry detection, stop manipulation, position sizing, hold-time bias, and overtrading pace — using your own trading history as the baseline, not industry averages. The system becomes more accurate as it accumulates more sessions from your specific trading style. Learn more on the Features page.

Working at height without a safety harness is not inherently dangerous — until the moment you lose your footing. The harness does not prevent the slip; it prevents the slip from becoming a fatal fall. A trader who breaks their daily loss limit on one bad morning, or revenge-trades through a funded account evaluation, has not failed because they lacked skill. They failed because there was no system in place to catch them in the critical moment.

Meridian acts as that safety harness for active traders. It operates in the background during every session, monitoring seven behavioral dimensions in real time. When psychological pressure builds to a point where the risk of a rule-breaking decision is high, Meridian Guard intervenes automatically — before the order is placed, not after the damage is done.

The harness metaphor also implies something important: you still do the work. Meridian does not trade for you or make decisions on your behalf, but it can optionally close your positions when rules are broken. It enforces the rules you already wrote for yourself — the ones you know are correct — in the moments when your own judgment is most compromised.

Download the .zip from the Download page. Do not extract it — NinjaScript packages are imported as .zip. Then in NinjaTrader 8:

1. Tools → Import → NinjaScript Add-On, select the .zip
2. Let NT8 compile; restart if prompted
3. Open the Dashboard — either method works any time:
   • Control Center → New → Add-on → Meridian Dashboard, or
   • Click the hamburger icon (☰) in the top-right of the HUD
4. In the Dashboard, open the License tab, paste your Whop license key, click Activate

Important: Meridian is an add-on, not a chart indicator. Do not look for it in the chart Indicators list. For the full walkthrough with screenshots, see the Installation Guide. For further help, see the FAQ or contact support.

No. Meridian is a psychological monitoring and behavioral enforcement tool. It does not provide trading signals, market analysis, entry/exit recommendations, or any form of financial advice.

The stability index reflects patterns in your own behavioral inputs during a session. How you interpret and act on that information is entirely your decision. Please read our Risk Disclaimer before use.

To understand what Meridian actually measures, see the Features page.

By default, Guard does not auto-close your open positions — it blocks new entries and enforces discipline while leaving any open trades under your control.

If Guard triggers a Disconnect (L5), you can optionally configure Guard to automatically close all open positions at the moment the pause activates. This is an opt-in setting; if not enabled, positions remain open and you manage them manually through your broker.

See the full list of Guard trigger conditions and response levels.

Yes. Because Meridian is a local NinjaTrader 8 add-on, it works with any brokerage or prop firm connection that NinjaTrader 8 supports.

We do not require any API connection to your evaluation or funded accounts.

See pricing to start a 7-day free trial, read more about Meridian Guard — which includes daily loss limit enforcement that aligns with most prop firm rules — or see the detailed breakdown: Risk management for NinjaTrader 8 prop firm traders.

Yes. Meridian functions in Sim mode.

Additionally, Market Replay data is handled separately and will not corrupt your live adaptive baseline or session history.

Yes, but it depends on how the rule was configured.

By design, Guard rules can be set with a password-lock to prevent in-session override. This is intentional — the purpose of Guard is to enforce a commitment made when you were not in a compromised state. An override available without friction defeats the mechanism.

If a rule is not password-locked, it can be paused or adjusted in the Guard configuration panel inside NinjaTrader at any time. If it is locked, you must enter the password you configured during setup.

Most traders who configure a password lock choose a password they will not remember under pressure — the point is to raise the cost of the override enough that it becomes a deliberate decision, not a reflexive one.

No. Meridian is designed with privacy as a core principle. All trading calculations and data storage happen entirely on your local machine. No trading data, session information, or behavioral metrics are ever transmitted to any server.

The only outbound request Meridian makes is a license key validation against the payment provider on startup. No fills, no session data, and no behavioral metrics ever leave your machine.

This is one of the reasons Meridian works reliably in prop firm environments with strict firewall policies. Learn more on the Features page.

Meridian targets NinjaTrader 8 (64-bit). We recommend installing the latest stable NinjaTrader 8 build from NinjaTrader. NinjaTrader 7 and earlier are not supported.

Very old NT8 builds may still run but are not guaranteed. If something breaks after an update, check the Changelog or support.

No. Meridian is a native add-on for NinjaTrader 8, which is a Windows-only platform.

We offer a 30-day money-back guarantee. If Meridian fails to install or run correctly on a supported system configuration, you are entitled to a full refund within 30 days of purchase.

To request a refund, email contactmeridianpsi@gmail.com with your order number.

Please see the full Refund Policy for complete terms and conditions.

You can cancel any time during the trial or between billing periods — no cancellation fees and no questions asked.

To cancel: visit whop.com/@me/settings/memberships, log in with the email you used at checkout, and you will see your active subscriptions. From there you can cancel, update your payment method, or access your License Key.

If you run into any trouble, email us at contactmeridianpsi@gmail.com and we will handle it manually within 24 hours.

Meridian Guard is the automated enforcement layer of Meridian — the real-time psychological stability monitor for NinjaTrader 8. It detects revenge trading, overtrading, stop-loss manipulation, oversizing, and rule violations, then enforces user-defined cooldowns, lockouts, and entry blocking before traders break their own rules.

It is not a replacement for your broker’s daily loss limit or NinjaTrader’s account risk settings. Those remain the financial floor. Guard adds a behavior-first layer on top: it reacts to rapid re-entry, session pace, stop manipulation, and rule pressure before P&L damage compounds — for example consecutive-loss cooldowns, mandatory pauses, and entry blocking when PSI or your triggers say the session is off-plan.

Meridian PSI (the monitor) is the real-time psychological stability index and seven-signal behavioral engine; Guard is the optional enforcement tier. See What is Meridian PSI? for the full product definition, Meridian Guard for triggers and response levels, and use cases for problem-specific pages.

Meridian Core ($49.99/mo) provides real-time psychological monitoring, the seven behavioral signal bars, and local session history.

Meridian Guard ($69.99/mo) includes everything in Core, plus the automated enforcement system (commitment device) and the advanced Intel Layer analytics.

See the pricing page for a full feature comparison.

Meridian helps monitor behaviors such as revenge trading, overtrading, stop-loss manipulation, oversizing, and rule violations.