Terms of Service

Kestrel Signal is operated as a sole proprietorship based in Pune, India. We provide software tools for backtesting systematic trading strategies. We are a software and publishing company. We are not a broker, investment advisor, fund manager, or signal service. We do not hold, manage, or execute any user funds.

The backtesting results, statistical metrics (including Deflated Sharpe Ratio, Probabilistic Sharpe Ratio, and walk-forward efficiency), and educational content on this platform are for analytical and educational purposes only. They are not investment advice and do not constitute a recommendation to buy or sell any financial instrument.

You must be at least 18 years old to use Kestrel Signal. By creating an account you confirm you are of legal age in your jurisdiction.

We do not accept signups from residents of: Russia, North Korea, Iran, Syria, Cuba, mainland China, and the US states of New York, Texas, Massachusetts, and Washington. If you are in a restricted jurisdiction you must not use this platform. We may terminate accounts if we learn they were created from restricted locations.

You are responsible for keeping your credentials secure. Do not share your account. Notify us immediately at hello@kestrelsignal.io if you suspect unauthorised access.

We may suspend or terminate accounts that violate these terms, abuse the platform, or attempt to circumvent usage limits. We will give reasonable notice where practical, except for severe violations where immediate action is required.

All backtests run on historical data. Past performance of a strategy in backtesting does not indicate future results. Backtesting has known limitations: lookahead bias, survivorship bias, overfitting, and market impact are not fully captured by any simulation. We show statistical validity metrics (DSR, PSR, sample size flags) precisely because we want you to understand these limitations — not to hide them.

Our results are deterministic: identical inputs always produce identical outputs, fingerprinted with a SHA-256 hash. We do not alter your results. However, we make no warranty that the engine, market data, or statistical computations are error-free.

You are solely responsible for any investment or trading decisions you make based on information from this platform.

You agree not to:

• Reverse-engineer, scrape, or extract our engine or data at scale
• Attempt to bypass sandbox security, rate limits, or geo-restrictions
• Upload malicious code in Python strategy uploads
• Use the platform in any way that violates applicable law
• Resell or commercially redistribute Kestrel Signal results without written permission

Python strategy uploads (Lab tier and above) run in isolated Firecracker microVM sandboxes. We apply static analysis and runtime restrictions. Attempting to escape the sandbox or access the network from within a strategy is a material breach of these terms.

Paid subscriptions are processed by Paddle.com, our authorised reseller and Merchant of Record. Paddle handles payment processing, invoicing, and applicable tax collection on our behalf. By subscribing, you agree to Paddle's terms at paddle.com/legal.

Subscriptions renew automatically until cancelled. You can cancel at any time through the billing portal; your access continues until the end of the current paid period. The Lab tier includes a 14-day free trial — no charge until the trial ends, cancel any time during the trial at no cost.

We do not offer refunds for partial subscription periods except where required by applicable law. If you believe a charge was made in error, contact us within 30 days at hello@kestrelsignal.io.

Kestrel Signal software, design, and content are owned by or licensed to us. You may not copy, redistribute, or create derivative works without written permission.

Your strategy definitions, DSL code, and uploaded Python files remain yours. You grant us a limited licence to run, store, and display them solely to provide the service. If you make a strategy public in the gallery, you grant other users a read-only licence to view and fork it within the platform.

The platform is provided "as is" without warranties of any kind, express or implied. We do not warrant that the service will be uninterrupted, error-free, or fit for any particular trading purpose.

To the maximum extent permitted by applicable Indian law, our total liability to you for any claim arising from or related to the service is limited to the amount you paid us in the 3 months preceding the claim. We are not liable for lost profits, indirect, or consequential losses of any kind.

You may delete your account at any time from Settings. We retain your data for 14 days after deletion as a grace period, then permanently delete it. We may terminate or suspend the service with 30 days' notice, or immediately for cause (fraud, abuse, legal requirement).

These terms are governed by the laws of India. Any dispute arising from or relating to these terms that cannot be resolved informally shall be subject to the exclusive jurisdiction of the courts of Pune, Maharashtra, India.

We may update these terms from time to time. We will notify you by email at least 14 days before material changes take effect. Continued use of the platform after the effective date constitutes acceptance of the updated terms. If you disagree with the changes, you may cancel your account before they take effect.

Kestrel Signal · Pune, India
hello@kestrelsignal.io