Terms of Service

Last updated: April 11, 2026

These Terms of Service ("Terms") govern your access to and use of the Probalytics API, ClickHouse SQL endpoint, data exports, and related services (collectively, the "Service") provided by Probalytics ("we", "us", or "our").

By creating an account or accessing the Service, you agree to these Terms. If you do not agree, do not use the Service.

1. The Service

Probalytics provides data infrastructure covering prediction market data from Polymarket (Polygon blockchain) and Kalshi (public API). Access is provided via:

• REST API
• ClickHouse SQL endpoint
• Bulk Parquet / S3 exports

Service access levels and features vary by plan (Starter, Pro, Orderbook, Custom).

2. Eligibility

You must be at least 18 years old and capable of forming a binding contract to use the Service. By accepting these Terms, you represent that you meet this requirement.

If you are using the Service on behalf of a company or organization, you represent that you have authority to bind that entity to these Terms.

3. Account Registration

You must provide accurate information when creating an account. You are responsible for maintaining the confidentiality of your API key(s) and for all activity that occurs under your account.

Notify us immediately at arsenii@probalytics.io if you suspect unauthorized use of your account or API key.

4. Permitted Use

You may use the Service to:

• Build and operate algorithmic trading systems
• Conduct quantitative and academic research
• Power data pipelines, analytics dashboards, and AI/ML models
• Develop applications that consume or present prediction market data

5. Prohibited Use

You may not use the Service to:

• Resell, sublicense, redistribute, or otherwise make available data obtained from the Service to any third party as a standalone data product or feed, in whole or in part, whether raw, reformatted, aggregated, or enriched — without prior written authorization from Probalytics
• Build, operate, or contribute to any product or service that competes with Probalytics by redistributing prediction market data sourced from the Service
• Cache, store, or mirror Service data for the purpose of serving it to third parties outside the normal operation of your own internal application
• Circumvent rate limits, quotas, or access controls by any means, including using multiple accounts or API keys
• Scrape or bulk-extract data beyond what your plan explicitly permits
• Use the Service in violation of applicable laws, including financial regulations in your jurisdiction
• Reverse-engineer the Service infrastructure or attempt unauthorized access to systems
• Use data in a manner that violates Polymarket's or Kalshi's own terms of service

Consequences of breach: Any violation of the data redistribution restrictions above is a material breach of these Terms. We reserve the right to immediately suspend or terminate your account without notice or refund, and to seek injunctive relief and damages to the fullest extent permitted by applicable law. You acknowledge that monetary damages alone may be insufficient to remedy such a breach.

If you are unsure whether your intended use is permitted, contact us at arsenii@probalytics.io before proceeding.

6. Data and Intellectual Property

6.1 Market Data

Polymarket data is derived from the public Polygon blockchain. Kalshi data is accessed via their public API. Probalytics does not claim ownership of underlying market data.

6.2 Probalytics Infrastructure

The API schema, normalization layer, ClickHouse database structure, query interfaces, documentation, and software powering the Service are proprietary to Probalytics. Nothing in these Terms grants you any rights to that intellectual property.

6.3 Your Data

You retain ownership of any data, models, or outputs you create using the Service.

7. Pricing and Payment

Plans and pricing:

All prices are in USD. Probalytics is not currently registered as a VAT payer; no VAT is charged. Annual billing is available at a 20% discount. Payment is processed via Stripe. Subscriptions are billed monthly (or annually) in advance. You authorize us to charge your payment method on a recurring basis.

Failure to pay may result in suspension of API access after a grace period of at most 7 days past the billing date.

We offer a money-back guarantee. If you are not satisfied with the Service, contact us within a reasonable period of first use for a full refund.

For annual subscriptions, you may request a prorated refund for unused months if you cancel within 30 days of your renewal date.

8. Free Trials and Trial Access

We may at our discretion grant trial access (including to specific data tiers) on a time-limited basis. Trial access may be revoked at any time. Trial users are still subject to these Terms.

9. Cancellation and Refunds

You may cancel your subscription at any time from your account settings or by emailing arsenii@probalytics.io. Cancellation takes effect at the end of the current billing period.

We offer a money-back guarantee on monthly plans. For annual plans, unused months may be refunded if you cancel within 30 days of your renewal date. Prorated refunds for mid-period cancellations on monthly plans are not standard but may be granted at our discretion in cases of documented service failure.

Plan upgrades and downgrades take effect immediately. We will prorate any differences.

10. Service Availability and SLA

We aim for high availability but do not guarantee uninterrupted access. Scheduled maintenance, third-party infrastructure issues (blockchain node outages, Kalshi feed interruptions), or force majeure events may result in downtime.

We will communicate planned maintenance in advance where possible.

No SLA is implied unless explicitly agreed in a Custom plan contract.

11. Data Accuracy

Polymarket data is sourced from the Polygon blockchain and is provided as-is. Kalshi data is sourced from their public API. Probalytics processes, normalizes, and stores this data in good faith, but we make no warranty regarding completeness, accuracy, or fitness for a particular purpose — including for use in live trading.

You are solely responsible for any trading or financial decisions made using data from the Service.

12. Limitation of Liability

To the maximum extent permitted by applicable law:

• We are not liable for any indirect, incidental, consequential, or punitive damages arising from your use of the Service
• Our total liability to you in any calendar month shall not exceed the fees you paid to us in that month
• We are not liable for losses arising from trading decisions made using Service data

Nothing in these Terms limits liability for death, personal injury, or fraud caused by our negligence.

13. Disclaimer of Warranties

The Service is provided "as is" and "as available" without warranties of any kind, express or implied, including but not limited to warranties of merchantability, fitness for a particular purpose, or non-infringement.

14. Termination

We may suspend or terminate your account:

• For breach of these Terms
• For non-payment
• If required to do so by law or regulation

You may terminate your account at any time by cancelling your subscription and emailing us.

On termination, your API access will cease. We may retain data as required by law or legitimate business purposes per our Privacy Policy.

15. Governing Law and Disputes

These Terms are governed by Finnish law. Any disputes arising from or related to these Terms shall be subject to the exclusive jurisdiction of the District Court of Espoo (Espoon käräjäoikeus), unless mandatory consumer protection law in your country of residence provides otherwise.

16. Changes to These Terms

We may update these Terms from time to time. We will notify registered users of material changes by email at least 14 days before they take effect. Continued use of the Service after changes take effect constitutes acceptance of the updated Terms.

17. Contact

For questions about these Terms:

Email: arsenii@probalytics.io

Website: probalytics.io

Probalytics is a service operated by Workki Oy, Kokinniitty 7 B, 02250 Espoo, Finland.