DeepBook V3: Query the Pool

DeepBook V3 exposes rich read-only query APIs. These functions allow developers and trading bots to fetch order book depth, simulate trades (dry runs), query user balances, fetch pool configurations, and check pre-trade parameters.

1. Primary Query APIs

Order Book Depth (Level 2)

• Range-Based Depth: Returns price and quantity vectors within a specified price range. getLevel2Range(pool, price_low, price_high, is_bid)
• Tick-Based Depth: Returns bid/ask prices and quantities up to a specified number of ticks. getLevel2Ticks(pool, ticks)

Swap Simulations (Dry Runs)

• Quote for Base (Exact Base): Get simulated quote output and DEEP fee for a given base asset input.
• Base for Quote (Exact Quote): Get simulated base output and DEEP fee for a given quote asset input.
• Generic Dry Run: Simulates swap exact amount and returns (base_out, quote_out, deep_fee_required).
• Reverse Dry Run: Simulates the exact input required to obtain a specific target output.