# Blockchain Service Endpoint

To communicate with the blockchain networks, an endpoint is needed to send/receive messages and transactions utilizing the interfacing in MASQ Software, conforming to standard [JSON-RPC format](https://eth.wiki/json-rpc/API) on EVM-compatible chains (Ethereum L2 and Polygon PoS).

This endpoint URL is saved under the `--blockchain-service-url` in the software, and allows you to use your own endpoints instead of public RPC endpoints.

For **live MASQ Browser / Base mainnet** use, configure an HTTPS JSON-RPC endpoint for **Base**.

**Here are providers that offer free and premium accounts that can be used with MASQ Node:**

### [Alchemy](https://www.alchemy.com) (recommended for Base mainnet)

#### Important links:

Documentation: <https://docs.alchemy.com>

Base API: <https://docs.alchemy.com/reference/base-api-quickstart>

### [Infura](https://infura.io)

#### Important links:

Documentation: <https://infura.io/docs/networks/base/base-quickstart>

### Nodies (recommended for Base mainnet RPC)

#### Important links:

Documentation: <https://docs.nodies.app/>

#### <https://www.nodies.app/auth/register>

#### Example endpoint pattern: Sign up at <https://www.nodies.app/> for free usage and access to Base endpoints.

{% hint style="info" %}
Advanced operators coordinating **Polygon mainnet** peers can use Polygon-focused RPC guides such as [Polygon network documentation](https://docs.polygon.technology/docs/develop/network-details/network/).
{% endhint %}


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