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This section is for Introducing Brokers (IBs) and Independent Software Vendors (ISVs) building a trading experience on Polymarket US. It teaches the workflow — how to onboard yourself, onboard and verify your users, fund their trading, place orders, and monitor activity — and points you to the exact APIs and streams for each step.
New here? Read Your Role and the Platform Model first, then follow the Integration Journey.

The integration journey

Which partner are you?

ISV

An Independent Software Vendor provides the software experience for retail traders. Not a broker.

IB

An Introducing Broker integrates the same way, plus carries CFTC/NFA regulatory obligations.

FCM

A Futures Commission Merchant connects and clears differently. See the FCM guide.
IBs and ISVs integrate identically — same APIs and same workflow. The difference is legal classification. FCMs are handled separately.

If you’re asking…

QuestionGo to
”What does a partner actually do?”Your Role
”How is Polymarket US structured?”Platform Model
”What’s the end-to-end build order?”Integration Journey
”How is funding handled?”Funding (coming soon)
“How do I authenticate?”Authentication
”How do I onboard and verify a user?”KYC Verification
”How do I place my first order?”Quickstart
”What does a term mean?”Partner Glossary

Get started

Start the Integration Journey

The recommended path from onboarding to live trading.
Ready to onboard? Contact institutional@polymarket.us to begin. See Partner Onboarding for what we need from you and what you’ll receive.