Terms of Service

Last updated:June 2026. By using DepthFeed's website, API, or data you agree to these terms.

The service

DepthFeed provides historical order-book data for prediction markets, delivered via API and Parquet files. Access is tied to a plan and an API key. Don't share your key, exceed your plan's rate limits, or attempt to disrupt the service.

Data & accuracy

We work hard to capture data faithfully and describe our methods honestly, but the data is provided "as is," without warranty of completeness or fitness for a particular purpose. Markets data can have gaps; nothing here is financial advice. You are responsible for your own trading decisions.

Acceptable use

• Use the data for research, analysis, and your own trading.
• Do not resell or redistribute bulk datasets without written permission.
• Do not use the service for anything unlawful.

Billing

Paid plans are billed monthly and can be cancelled anytime; the free Explorer tier needs no card. Fees are non-refundable except where required by law.

Not affiliated

DepthFeed is independent and is not affiliated with or endorsed by Polymarket, Kalshi, or any exchange. Questions? Contact us.