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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.

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The integration journey

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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.

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If you’re asking…

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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.