ClickUp API doesn’t have (or didn’t have) an SDK or API client for their REST API. So we decided let’s try to build one! We chose HTTPGuzzle as a PHP library to help support the construction of the endpoints and to keep us organized.
Rather just checkout the code right now? saberwp/clickup-php-client: PHP Client for the ClickUp API (github.com)
We’ve released our work on this project using GitHub and are happy to answer any questions (we can only provided limited support) via the GitHub issues for the repo.