Posting is an open-source terminal-based API client that assists developers in constructing, testing, and managing HTTP requests directly from the command line, utilizing a swift, keyboard-focused interface. This tool serves as a contemporary substitute for applications like Postman or Insomnia, operating as a text-based user interface (TUI) rather than a graphical one, which facilitates efficient workflows whether locally, via SSH, or within remote environments and containers. Users can create and systematically organize API requests into collections formatted as straightforward, readable YAML files, which simplifies version control and sharing among projects. The client boasts numerous features, such as autocompletion, syntax highlighting, access to a command palette, and “jump mode” navigation for rapid movement within the interface. Additionally, it supports the import and export of cURL commands and offers integration with text editors like Vim, making it easier to edit request bodies. With its focus on usability and efficiency, Posting enhances the developer experience by streamlining API management tasks.