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

# Testnet API

TON Center supports both **mainnet** and **testnet** environments for all API versions.

The testnet is ideal for development and testing. It mirrors the functionality of the mainnet but uses separate smart contracts and tokens with no real-world value.

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## Base URLs

| Environment | API v2                                 | API v3                                 |
| ----------- | -------------------------------------- | -------------------------------------- |
| **Mainnet** | `https://toncenter.com/api/v2`         | `https://toncenter.com/api/v3`         |
| **Testnet** | `https://testnet.toncenter.com/api/v2` | `https://testnet.toncenter.com/api/v3` |

Simply replace the base URL in your requests depending on your environment.

<Note>
  You can check out the Testnet API in the API playground for [v2](/apiv2/accounts/get-address-information) and [v3](/apiv3/accounts/get-account-states) by selecting the testnet URL from the dropdown menu.

  <img src="https://mintcdn.com/ton/ygRAwDAsQ7L7hku2/images/testnet/request.gif?s=efe412e793899e14c0be62cba8e942ca" alt="Testnet" width="800" height="447" data-path="images/testnet/request.gif" />
</Note>

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## Usage Notes

* No real TON is needed on testnet.
* You still need an API key for higher rate limits, [get one here](https://t.me/toncenter).
* Ideal for testing wallets, contracts, and integrations without affecting live data.

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