This page explains how to get an API key for Poloniex's transaction history.
Attention (as of February 28, 2022)
■Support StatusAPI connection is only supported for Spot trades, Withdrawals, and Distributions. Margin trades and Futures trades are not supported.
■The API may be disabled depending on the specifications of the exchange.
According to Poloniex, starting from September 2020, they conduct reviews of inactive API keys at least quarterly. If a customer does not respond to the notification sent by the exchange, the exchange will disable the API key. (This information is quoted from Poloniex's website.) If your API key has already been removed by the exchange, you will need to delete the old API connection and establish a new one to reconnect it.
1. Log into your Poloniex account, click on the Person Icon at the top right and select "Profile".

2. Click "API Keys" and click "Create API". You will receive a confirmation email. Click on the link in the email.
*When you log in for the first time, you may get "API Access is disabled" message on the screen. If this is the case, please follow the instructions on the screen to enable API access.
3. On the screen where you are presented with your API key and your API secret, do not change anything. As in the below diagram, please leave API permissions unselected and IP Access Restriction as "Unrestricted". Then click, "Next".

4. Please take notes of API key and Secret key.
Disclaimer
Please note that we will not be held responsible for any damages caused by unauthorized use or other accidents due to API connections. When connecting, please be sure to use the API key specified by us.