# network | Stacks.js 1.4.1 Library Reference
Documentation for Stacks.js 1.4.1 Library Reference

# @stacks/network

Network and API library for working with Stacks blockchain nodes.

## Installation

    npm install @stacks/network

## Usage

Creating a Stacks mainnet, testnet, regtest or mocknet network

    import { StacksMainnet, StacksTestnet, StacksMocknet } from '@stacks/network';

    const network = new StacksMainnet();

    const testnet = new StacksTestnet();

    const regtest = new StacksRegtest();

    const mocknet = new StacksMocknet();

Setting a custom node URL

    network.coreApiUrl = 'https://www.mystacksnode.com/';

Check if network is mainnet

    const isMainnet = network.isMainnet();

Example usage in transaction builder

    import { makeSTXTokenTransfer } from '@stacks/transactions';

    const txOptions = {
      network,
      recipient: 'SP2BS6HD7TN34V8Z5BNF8Q2AW3K8K2DPV4264CF26',
      amount: new BigNum(12345),
      senderKey: 'b244296d5907de9864c0b0d51f98a13c52890be0404e83f273144cd5b9960eed01',
    };

    const transaction = await makeSTXTokenTransfer(txOptions);

Get various API URLs

      const txBroadcastUrl = network.getBroadcastApiUrl();

      const feeEstimateUrl = network.getTransferFeeEstimateApiUrl();

      const address = 'SP2BS6HD7TN34V8Z5BNF8Q2AW3K8K2DPV4264CF26';
      const accountInfoUrl = network.getAccountApiUrl(address);

      const contractName = 'hello_world';
      const abiUrl = network.getAbiApiUrl(address, contractName);

      const functionName = 'hello';
      const readOnlyFunctionCallUrl = network.getReadOnlyFunctionCallApiUrl(address, contractName, functionName);

      const nodeInfoUrl = network.getInfoUrl();

      const blockTimeUrl = network.getBlockTimeInfoUrl();

      const poxInfoUrl = network.getPoxInfoUrl();

## Index

### Classes

- StacksMainnet
- StacksMocknet
- StacksRegtest
- StacksTestnet

### Interfaces

- StacksNetwork

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