How to get Uniswap V2 pair reserves

Step 1: Setup Moralis

Read the article Setting Up Moralis: Getting Started and make sure to finish all the steps. Only after that you can go ahead to complete this guide.

Step 2: Get Pair Reserves of A Uniswap V2 Liquidity Pool

In order to get pair address of a liquidity, Moralis provides you a getPairAddress endpoint to do so.

Here you'll need two parameters: pairAddress and address.

Once you've obtained the pairAddress and address, you can copy the following code:

index.js (JavaScript)

const Moralis = require("moralis").default;
const { EvmChain } = require("@moralisweb3/common-evm-utils");

const runApp = async () => {
  await Moralis.start({
    apiKey: "YOUR_API_KEY",
    // ...and any other configuration
  });

  const pairAddress = "0xa2107fa5b38d9bbd2c461d6edf11b11a50f6b974";

  const chain = EvmChain.ETHEREUM;

  const response = await Moralis.EvmApi.defi.getPairReserves({
    pairAddress,
    chain,
  });

  console.log(response.toJSON());
};

runApp();

index.ts (TypeScript)

import Moralis from "moralis";
import { EvmChain } from "@moralisweb3/common-evm-utils";

const runApp = async () => {
  await Moralis.start({
    apiKey: "YOUR_API_KEY",
    // ...and any other configuration
  });

  const pairAddress = "0xa2107fa5b38d9bbd2c461d6edf11b11a50f6b974";

  const chain = EvmChain.ETHEREUM;

  const response = await Moralis.EvmApi.defi.getPairReserves({
    pairAddress,
    chain,
  });

  console.log(response.toJSON());
};

runApp();

index.py (Python)

from moralis import evm_api

api_key = "YOUR_API_KEY"
params = {
    "pair_address": "0xa2107fa5b38d9bbd2c461d6edf11b11a50f6b974",
    "chain": "eth",
    # "to_block": "",
    # "to_date": "",
}

result = evm_api.defi.get_pair_reserves(
    api_key=api_key,
    params=params,
)

print(result)

Step 3: Run the script

To run the script, enter the following command:

Shell (JavaScript)

node index.js

Shell (TypeScript)

ts-node index.ts

Shell (Python)

python index.py

In your terminal, you should see the following JSON response:

{
  "reserve0": "153821290283758699698748",
  "reserve1": "794388536599735508826"
}

Congratulations 🥳 You just get the pair reserves of a Uniswap V2 liquidity pool with just a few lines of code using the Moralis DeFi API!

API Reference

If you want to know more details on the endpoint and optional parameters, check out:

• getPairReserves

Support

If you face any trouble following the tutorial, feel free to reach out to our community engineers in our Discord or Forum to get 24/7 developer support.