OpenBook needs to be cranked to process orderbook events. The initial code was taken from the same crank script for openbook in mango-v3-client, so most credit goes to Mango team.
yarn install
make sure to create a JSON file containing the keypair formatted as a byte array e.g. [1,3,4...]
ENDPOINT_URL=... WALLET_PATH=./path/to/wallet.json ./start-cranker.sh
Or run with KEYPAIR directly:
ENDPOINT_URL=... KEYPAIR=[1,3,4...] ./start-cranker.sh
to run in the background, pass "-d" or "--daemon"
env args to pay attention to:
HIGH_FEE_MARKETS, // markets to apply a priority fee for e.g. [0,1] to apply on the first two markets in markets.json
DEFAULT_CU_PRICE, // extra microlamports per cu for any market
PRIORITY_CU_PRICE, // extra microlamports per cu for high fee markets
- Crank multiple markets in the same TX
- Poll the list of top markets using https://openserum.io/api/serum/markets.json?min24hVolume=100000
- Dynamic priority fee using getRecentPrioritizationFees
- Dynamic frequency based on queue length