Tutorial: Order Matching Bot
Order Matching Bots (Matching Bots) are responsible for matching two orders that cross or a taker order against the DAMM. Specifically, this includes:
- Market Orders: Market Buy and Market Sell
- Limit Orders: Limit Buy and Limit Sell
Matching Bots receive a small compensation for each order that they successfuly fill.
See for a technical explanation of how the decentralised orderbook (DLOB) and matching incentives work.
Matching Bots are similar to in that they:
- also maintain a local copy of the Decentralised Limit Orderbook (DLOB);
- do not require the operator to manage collateral; and
- receive a small reward for performing their duties.
The reference implementation of the Order Matching Bot is available here.
Follow the instructions at to set the required environment variables and make sure a ClearingHouseUser is initialized.
Start the Matching Bot:
Market orders that are sent on the Drift Protocol first go through the . After the auction period, Matching Bots step in to fill orders for a small reward.
The DLOB implementation includes a method for getting orders ready to be filled:
To avoid trying to fill orders that aren't ready to be filled, filter out orders that are too small to fill