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As an Introducing Broker (IB) or Independent Software Vendor (ISV), you integrate with Polymarket US as a message facilitator: you authenticate as a Firm, act on behalf of the Retail Participants you onboard, and route their activity to and from the exchange. You build the experience; Polymarket US runs the regulated market and clearing.
Funding is coming soon. The mechanics for funding participant trading accounts are being finalized — see Funding. Your role is to onboard and verify participants and route their orders.

What you do vs. what Polymarket US does

ResponsibilityYou (Partner)Polymarket US
Onboard Retail Participants (collect details, present agreements)
Collect KYC information and submit it
Verify identity and decide (KYC)✅ Performs verification & decision
Provision trading identities and accounts✅ Automatic on KYC approval
Present markets, prices, and a trading UI
Match orders and maintain the order book✅ (DCM)
Hold collateral, clear, and settle✅ (DCO)
Monitor orders, positions, balances✅ Consume streams✅ Emit streams

You are a facilitator, not a counterparty

Every message you send is on behalf of a Retail Participant you have onboarded. You are a permissions and routing layer:
  • You authenticate once as your Firm and act for any Retail Participant under it.
  • Polymarket US matches, clears, and settles — you never take the other side of a trade.
  • Funding of participant trading accounts is handled by Polymarket US; the mechanics are coming soon.

ISV or IB?

The two partner types integrate identically — the same APIs and the same workflow. The difference is legal classification, not mechanics.

ISV

An Independent Software Vendor provides the software experience. ISVs are not brokers and carry no broker registration.

IB

An Introducing Broker integrates the same way plus carries CFTC registration and NFA membership obligations.
IB-specific obligations. If you are an Introducing Broker, you must maintain CFTC registration, NFA membership, and the supervisory/compliance requirements described on the IBs page in addition to completing this integration. These are regulatory obligations, not technical ones.

Next steps

Platform Model

How the DCM and DCO fit together, and the entities you act on.

Integration Journey

The end-to-end path from onboarding to live trading.