Query mangrove

Querying for open markets

Mangrove has a built in function in its reader contract to return the list of all open markets diractly from the chain. This function will consist of 2 consecutive RPC calls to get the open markets and the tokens informations. Other than default viem parameters, there are two things to provide to this function; the list of "cashnesses" and symbol overrides. Symbol overrides is a string to string dict to override the returned symbol string.

"Cashness" of a token

The "cashness" of a token defines if in a given market, it will be a base or a quote token. It is up to you to choose, but the mangrove team has these given principles:

• The ceil "cashness" for a variable asset is 1000, the floor "cashness" for a stable asset is 1000.

• Higher TVL means higher cashness.

Any case by case scenario can revise this rule, but all in all If asset A has a higher "cashness" than asset B, then A will be the quote asset, and B will be the base asset.

Calling the SDK for open markets

Here is the implementation of the call to get all open markets:

src/markets.ts

import type { MarketParams } from "@mangrovedao/mgv";
import { client } from "./client";

export async function getOpenMarkets(): Promise<MarketParams[]> {
  return client.getOpenMarkets({
    cashnesses: { WETH: 100, WBTC: 200, USDC: 1000 },
    symbolOverrides: {
      USDT0: "USDT",
    },
  });
}

Getting the order book

Now that we have choosen a market, we need to get the order book for that specific market. This function includes only one multicall that queries all orders up to a given depth, as well as market configs.

src/book.ts

import {
  publicMarketActions,
  type Book,
  type MarketParams,
} from "@mangrovedao/mgv";
import { client } from "./client";
import { mangroveConfig } from "./config";

export async function getBook(
  market: MarketParams,
  depth = 100n
): Promise<Book> {
  const marketClient = client.extend(
    publicMarketActions(mangroveConfig, market)
  );
  return marketClient.getBook({ depth });
}

Now with that, we are ready to make market and limit orders.