Worked on the permitio/opal repository to enhance developer experience by creating comprehensive documentation that guides users through local testing of fetch providers. Focused on improving onboarding and usability, the work detailed how to run the OPAL client locally and set up a Docker-based remote debugging workflow. Using Markdown for documentation and emphasizing developer experience best practices, the contribution streamlined the process for developers to install custom packages and validate fetch provider implementations efficiently. This targeted approach addressed the need for faster iteration and easier validation, resulting in a more accessible workflow for those building and testing custom fetch providers within OPAL.