> ## 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.

# Tempo Moderato (USD) Overview

Tempo Moderato (USD) RPC

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

## What is Tempo Moderato?

Tempo Moderato is an EVM-compatible testnet. It is a testnet for Tempo. Its ticker symbol is `USD`.

## What is the Tempo Moderato (USD) 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=42431`. Include the JSON-RPC method and params in the request body.

## Supported networks

| Network        | Symbol | Type    | Chain ID |
| -------------- | ------ | ------- | -------- |
| Tempo          | `USD`  | Mainnet | `4217`   |
| Tempo Moderato | `USD`  | Testnet | `42431`  |

## API reference

Browse the available method groups for this chain:

* [Debug](/reference/jsonrpc-docs/42431/debug/debug-account-range)
* [Erigon](/reference/jsonrpc-docs/42431/erigon/erigon-get-header-by-number)
* [EVM](/reference/jsonrpc-docs/42431/evm/eth-accounts)
* [Trace](/reference/jsonrpc-docs/42431/trace/trace-block)