> ## Documentation Index
> Fetch the complete documentation index at: https://docs.uniblock.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Sonic Mainnet (S) Overview

Sonic Mainnet (S) RPC

Use Uniblock's JSON-RPC endpoint to access Sonic Mainnet (S) with low-latency routing and a single API surface across providers.

## What is Sonic Mainnet?

Sonic Mainnet is an EVM-compatible mainnet. Its ticker symbol is `S`.

## What is the Sonic Mainnet (S) JSON-RPC API?

The JSON-RPC API is the standard interface for reading chain state, sending transactions, and interacting with smart contracts where supported.

## Making API requests

Send a POST request to `https://api.uniblock.dev/uni/v1/json-rpc?chainId=146`. Include the JSON-RPC method and params in the request body.

## Supported networks

| Network             | Symbol | Type    | Chain ID |
| ------------------- | ------ | ------- | -------- |
| Sonic Mainnet       | `S`    | Mainnet | `146`    |
| Sonic Blaze Testnet | `S`    | Testnet | `57054`  |
| Sonic Testnet       | `S`    | Testnet | `14601`  |

## API reference

Browse the available method groups for this chain:

* [Debug](/reference/jsonrpc-docs/146/debug/debug-chaindb-compact)
* [EVM](/reference/jsonrpc-docs/146/evm/eth-accounts)
* [Trace](/reference/jsonrpc-docs/146/trace/trace-block)