Venue System

Understanding the venue system for CLOB market trading

Overview

CLOB markets use a venue system where each market is associated with specific contract addresses. Before placing orders, you must fetch venue data for the market.

How It Works

1. Fetch market data

   GET /markets/:slug returns venue information for the market.

2. Use venue.exchange

   This address is the verifyingContract for EIP-712 order signing.

3. Cache the venue

   Venue data is static per market — fetch once and reuse.

Venue Response

{
  "venue": {
    "exchange": "0xA1b2C3...",
    "adapter": "0xD4e5F6..."
  }
}

Required Token Approvals

Before trading, set up token approvals based on your order type:

Order Type	Market Type	Approve To
BUY	All CLOB	USDC → venue.exchange
SELL	Simple CLOB	Conditional Tokens → venue.exchange
SELL	NegRisk / Grouped	Conditional Tokens → venue.exchange AND venue.adapter

For NegRisk SELL orders, you must approve to both the exchange and the adapter addresses.