> ## 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.

# Mantle Sepolia (MNT) Overview

Mantle Sepolia (MNT) RPC

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

## What is Mantle Sepolia?

Mantle Sepolia is an EVM-compatible testnet. It is a testnet for Mantle. Its ticker symbol is `MNT`.

## What is the Mantle Sepolia (MNT) 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=5003`. Include the JSON-RPC method and params in the request body.

## Supported networks

| Network        | Symbol | Type    | Chain ID |
| -------------- | ------ | ------- | -------- |
| Mantle         | `MNT`  | Mainnet | `5000`   |
| Mantle Sepolia | `MNT`  | Testnet | `5003`   |

## API reference

Browse the available method groups for this chain:

* [Debug](/reference/jsonrpc-docs/5003/debug/debug-account-range)
* [EVM](/reference/jsonrpc-docs/5003/evm/eth-accounts)