Minswap SDK

The Minswap open-source providing a comprehensive suite of off-chain tools price feeds, historical data storage, and integration methods for: Stableswap, AMM V1, AMM V2 and LBE V2.

Features

• [x] Pool price feed
• [x] Historical data of pool
• [x] Calculate trade price
• [x] Calculate price impact
• [x] Create orders and submit with Lucid
• [x] Syncer to sync minswap's liquidity pool data

We provide two adapter BlockfrostAdapter and MinswapAdapter to get the price and liquidity pool information.

• BlockfrostAdapter: use Blockfrost to query the data.
• MinswapAdapter: use Syncer to query the data. If you want to use MinswapAdapter you need to run syncer by yourself.

Install

• NPM: npm install @minswap/sdk
• Yarn: yarn add @minswap/sdk

ES Module Requirement

This package depends on lucid-cardano, which is an ESM package, so it's also an ESM package. To import from ESM package, you need to specify "type": "module" in package.json and configure other build flags accordingly.

Examples

Create an adapter using either BlockfrostAdapter or MinswapAdapter:

BlockfrostAdapter:

import { BlockFrostAPI } from "@blockfrost/blockfrost-js";
import { BlockfrostAdapter, NetworkId } from "@minswap/sdk";

const blockFrostApi = new BlockFrostAPI({
  projectId: "<your_project_id>",
  network: "mainnet",
})

const blockfrostAdapter = new BlockfrostAdapter(
  NetworkId.MAINNET,
  blockFrostApi
)

MinswapAdapter:

• Install docker compose.
• Update the .env file to specify the exact network you want to sync.
• Run the command: docker compose -f docker-compose.yaml up --build -d to build.
• Run the command: docker compose -f docker-compose.yaml logs -f to view log.

import { BlockFrostAPI } from "@blockfrost/blockfrost-js";
import { BlockfrostAdapter, MinswapAdapter, NetworkEnvironment, NetworkId, newPrismaClient, PostgresRepositoryReader } from "@minswap/sdk";

const blockFrostApi = new BlockFrostAPI({
  projectId: "<your_project_id>",
  network: "mainnet",
})

const prismaClient = await newPrismaClient("postgresql://postgres:minswap@postgres:5432/syncer?schema=public&connection_limit=5")

const repositoryReader = new PostgresRepositoryReader(
  NetworkEnvironment.MAINNET,
  prismaClient
)

const minswapAdapter = new MinswapAdapter({
  networkId: NetworkId.MAINNET,
  networkEnv: NetworkEnvironment.MAINNET,
  blockFrostApi: blockFrostApi,
  repository: repositoryReader
})

Example 1: Get current price of MIN/ADA pool

MIN/ADA pool v1:

for (let i = 1; ; i++) {
  const pools = await adapter.getV1Pools({
    page: i,
  });
  if (pools.length === 0) {
    // last page
    break;
  }
  const minAdaPool = pools.find(
    (p) =>
      p.assetA === "lovelace" &&
      p.assetB ===
      "29d222ce763455e3d7a09a665ce554f00ac89d2e99a1a83d267170c64d494e"
  );
  if (minAdaPool) {
    const [price0, price1] = await adapter.getV1PoolPrice({ pool: minAdaPool });
    console.log(
      `ADA/MIN price: ${price0.toString()}; MIN/ADA price: ${price1.toString()}`
    );
    // we can later use this ID to call getPoolById
    console.log(`ADA/MIN pool ID: ${minAdaPool.id}`);
    break;
  }
}

MIN/ADA pool v2:

const minAdaPool = await adapter.getV2PoolByPair(
  Asset.fromString("lovelace"),
  Asset.fromString("29d222ce763455e3d7a09a665ce554f00ac89d2e99a1a83d267170c64d494e")
)

if (minAdaPool) {
  const [a, b] = await adapter.getV2PoolPrice({ pool: minAdaPool });
  console.log(
    `ADA/MIN price: ${a.toString()}; MIN/ADA price: ${b.toString()}`
  );
}

Example 2: Get historical prices of MIN/ADA pool

MIN/ADA pool v1:

const MIN_ADA_POOL_ID =
  "6aa2153e1ae896a95539c9d62f76cedcdabdcdf144e564b8955f609d660cf6a2";

const history = await adapter.getV1PoolHistory({ id: MIN_ADA_POOL_ID });
for (const historyPoint of history) {
  const pool = await adapter.getV1PoolInTx({ txHash: historyPoint.txHash });
  if (!pool) {
    throw new Error("pool not found");
  }
  const [price0, price1] = await adapter.getV1PoolPrice({ pool: pool });
  console.log(`${historyPoint.time}: ${price0} ADA/MIN, ${price1} MIN/ADA`);
}

MIN/ADA pool v2:

for (let i = 1; ; i++) {
  const pools = await adapter.getV2PoolHistory({
    assetA: Asset.fromString("lovelace"),
    assetB: Asset.fromString("29d222ce763455e3d7a09a665ce554f00ac89d2e99a1a83d267170c64d494e"),
    page: i,
  });
  if (pools.length === 0) {
    // last page
    break;
  }

  for (const pool of pools) {
    const [price0, price1] = await adapter.getV2PoolPrice({ pool: pool });
    console.log(
      `ADA/MIN price: ${a.toString()}; MIN/ADA price: ${price1.toString()}`
    );
  }
}

Example 3: Build Order transaction and submit

See examples/ for more details. You can run a single file like npm run exec examples/example.ts.