---
title: "API Keys"
description: "A tutorial on how to create, edit and manage your API key,"
url: https://info.etherscan.com/api-keys/
tags: ["Tutorials"]
published: 2020-06-30
updated: 2026-06-21
---

# API Keys

On Etherscan, we provide an array of APIs for data pertaining to transactions, contracts, accounts, stats and other components of the Ethereum blockchain. For the full list of our currently available APIs, kindly refer [here](https://etherscan.io/apis).

You must be a registered Etherscan user with your own API keys to use the APIs. Take note that the APIs are free-to-use but with a limitation of **5 calls per second** put in place to ensure a smooth experience to the collective users.

  
  

#### To create your API key:

1.  Log in to your Etherscan account [here](https://etherscan.io/login). If you have yet registered for an account, you can refer to our [sign up guide](https://info.etherscan.com/etherscan-account/) or register [here](https://etherscan.io/register).
2.  Upon login, you should be directed to your Client Portal & Services. There, look to the left side of the page for a tab called **API Dashboard**.

![](https://info.etherscan.com/api-keys/images/2025/02/image-9.png)

  

3.  On **API Dashboard** page, click on the **\+ Add** button where after which you will be prompted to insert an AppName for the API key that you are currently creating.

![](https://info.etherscan.com/api-keys/images/2025/02/image-10.png)

  

4.  You have successfully created your first API key!

![](https://info.etherscan.com/api-keys/images/2025/02/image-11.png)

  
  

#### To edit your API key:

To change the AppName of your API key, go to **API Dashboard** page and click on the **Edit** button located next to the API key that you want to edit. You can also view the API Statistics and API Logs for each API key.

![](https://info.etherscan.com/api-keys/images/2025/02/image-13.png)

  
  

> -   Each Etherscan account is limited to only **3 API keys**.
> -   The API keys created on [Etherscan.io](https://etherscan.io/) can also be used for the [Sepolia](https://sepolia.etherscan.io/), [Holesky](https://holesky.etherscan.io/) Testnets.
> -   Source attribution via a link back or mention that your app is "Powered by Etherscan.io APIs" is required except for personal/private usage.
> -   Refer [here](https://info.etherscan.com/api-return-errors/) for API key rate limit & expected error returns.
> -   Please [contact us](https://etherscan.io/contactus?id=1) if you would like to upgrade your API Plan.