> ## 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.

# Cronos (CRO) Overview

Cronos (CRO) RPC

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

## What is Cronos?

Cronos is an EVM-compatible mainnet. Its ticker symbol is `CRO`.

## What is the Cronos (CRO) 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=25`. Include the JSON-RPC method and params in the request body.

## Supported networks

| Network | Symbol | Type    | Chain ID |
| ------- | ------ | ------- | -------- |
| Cronos  | `CRO`  | Mainnet | `25`     |

## API reference

Browse the available method groups for this chain:

* [Debug](/reference/jsonrpc-docs/25/debug/debug-get-bad-blocks)
* [EVM](/reference/jsonrpc-docs/25/evm/eth-accounts)
* [Trace](/reference/jsonrpc-docs/25/trace/trace-block)