Mango Client API (javascript)

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​API Reference​
Installation
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yarn add @blockworks-foundation/mango-client
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Usage Example
This example assumes that you have a wallet that is already setup with devnet tokens. The private key should be stored in ~/.config/solana/devnet.json. Visit https://v3.mango.markets/ and connect with the wallet to fund your margin account so that you can place orders. You can find the full source code in example.ts.
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// Fetch orderbooks
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const bids = await perpMarket.loadBids(connection);
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const asks = await perpMarket.loadAsks(connection);
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​
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// L2 orderbook data
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for (const [price, size] of bids.getL2(20)) {
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  console.log(price, size);
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}
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​
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// L3 orderbook data
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for (const order of asks) {
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  console.log(
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    order.owner.toBase58(),
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    order.orderId.toString('hex'),
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    order.price,
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    order.size,
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    order.side, // 'buy' or 'sell'
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  );
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}
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​
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// Place order
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await client.placePerpOrder(
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  mangoGroup,
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  mangoAccount,
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  mangoGroup.mangoCache,
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  perpMarket,
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  owner,
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  'buy', // or 'sell'
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  39000,
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  0.0001,
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  'limit', // or 'ioc' or 'postOnly'
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);
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​
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// retrieve open orders for account
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const openOrders = await perpMarket.loadOrdersForAccount(
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  connection,
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  mangoAccount,
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);
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​
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// cancel orders
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for (const order of openOrders) {
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  await client.cancelPerpOrder(
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    mangoGroup,
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    mangoAccount,
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    owner,
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    perpMarket,
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    order,
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  );
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}
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​
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// Retrieve fills
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for (const fill of await perpMarket.loadFills(connection)) {
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  console.log(
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    fill.owner.toBase58(),
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    fill.maker ? 'maker' : 'taker',
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    fill.baseChange.toNumber(),
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    fill.quoteChange.toNumber(),
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    fill.longFunding.toFixed(3),
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    fill.shortFunding.toFixed(3),
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  );
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}
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Installation
Usage Example