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Market Makers Overview

Market makers on Openfish maintain standing bid and ask orders in prediction markets, providing the depth that lets other participants open and close positions without excessive slippage. In exchange for this service, market makers collect the bid-ask spread, qualify for liquidity rewards, and receive maker rebates.


  • Zero maker fees — Makers never pay trading fees on Openfish.
  • Maker rebates — Earn tiered daily meme rebates based on your maker volume. See Maker Rebates.
  • Liquidity rewards — A separate incentive pool distributed daily to liquidity providers who keep tight, two-sided quotes. See Liquidity Rewards.
  • Event-level risk tools — Multi-outcome markets can be managed with event-level exposure limits. See Multi-Outcome Markets.
  • RFQ flow — Large block traders submit Requests for Quote that only market makers can respond to, giving you first look at institutional flow.

  1. Complete setup — Create a wallet, deposit platform meme through the Bridge, and generate API credentials. See Getting Started.
  2. Connect to data feeds — Subscribe to the WebSocket for real-time orderbook updates and the Gamma API for market metadata. See Market Data.
  3. Start quoting — Post limit orders via the CLOB REST API. See Trading.

ActionToolDocumentation
Deposit platform memeBridge APIBridge
Generate API credentialsCLOB REST APIGetting Started
Post limit ordersCLOB REST APITrading
Monitor orderbookWebSocketMarket Data
Manage exposureCLOB REST APIInventory
Cancel live ordersCLOB REST APITrading
Respond to RFQsRFQ APIRFQ
Check rebatesCLOB REST APIMaker Rebates

  • Getting Started — Wallet setup, deposits, API key creation, and initial risk limits.
  • Trading — Order types, batch submission, cancellation strategies, and best practices.
  • Inventory Management — Manage ledger balances and outcome exposure.
  • Liquidity Rewards — How the reward program works, the scoring formula, and daily distribution.
  • Maker Rebates — Volume-tiered BPS rebates paid daily in meme.

Quoting prediction markets carries tangible risk. A crossed book — where your bid exceeds your ask — means every fill loses money. Always validate quote prices against current market conditions before submission, and wire up a kill switch that fires cancel_all the moment you detect anomalous fills, position limit breaches, or connectivity degradation.


For market maker onboarding and technical support, contact support@openfish.me.