# Determining the gasless transaction method

## **Overview**

Contracts that have the `executeMetaTransaction` or the `Permit` method for gasless transactions are natively supported by our SDK to perform gasless transactions. 

{% hint style="info" %}
Does your contract use a different gasless transaction method? Contact us on [Discord](https://discord.gg/rlynetwork) with the contract address and method to find a solution.
{% endhint %}

## executeMetaTransaction

Here is how to check if your contract supports the executeMetaTransaction method for gasless transactions: 

### Method 1

Verifying the Contract Name

1. View your token contract on polygonscan
2. Click on the Contract tab
3. Click on the Code tab
4. If the Contract Name displays `UChildERC20Proxy`, it supports the `executeMetaTransaction` method. 

Here is an example of the RLY Token on [Polygonscan](https://polygonscan.com/token/0x76b8d57e5ac6afac5d415a054453d1dd2c3c0094#code)

<div align="left" data-full-width="false"><figure><img src="/files/l9JXLRln3BKTG1Lk7Uas" alt=""><figcaption></figcaption></figure></div>

{% hint style="info" %}
UChildERC20Proxy contracts inherit from the UChildERC20 contract that natively supports the executeMetaTransaction method.&#x20;
{% endhint %}

### Method 2

Verify the implementation contract&#x20;

1. View your token contract on polygonscan
2. Click on the Contract tab
3. Click on the Read Contract
4. Navigate to the contract address under the implementation dropdown
5. Click on the Contract tab&#x20;
6. Click on the Write Contract&#x20;
7. Check that the contract has the executeMetaTransaction method

Here is an example of the RLY Token's implementation contract on [Polygonscan](https://polygonscan.com/address/0x93d4a27C64b9Dba29ed328c5801120a68B331C30#writeContract)

<div align="left"><figure><img src="/files/UXUD2yEdD9p1FCqIg1IQ" alt="" width="375"><figcaption></figcaption></figure></div>

## Permit

1. View your token contract on polygonscan
2. Click on the Contract tab
3. Click on the Write Contract
4. Check that the contract has the permit method

Here is an example of the TAKI Token's implementation contract on [Polygonscan](https://polygonscan.com/token/0xe78aee6ccb05471a69677fb74da80f5d251c042b#writeContract)

<div align="left"><figure><img src="/files/dNxdXs92iw25wpMaIZpM" alt="" width="375"><figcaption></figcaption></figure></div>


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