Slumber: A YAML-Configured Terminal HTTP Client for REST Workflows

Slumber is a terminal-based HTTP client aimed at developers who prefer staying in the shell over reaching for GUI tools like Postman or Insomnia. It offers two modes of operation: an interactive TUI for sending requests and inspecting responses, and a CLI mode suited to quick one-offs and scripting pipelines.

Both modes draw from the same configuration source — a YAML file called the request collection — which makes setups portable, version-controllable, and easy to share across a team. The tool emphasizes ease of use, configurability, and shareability as its core design priorities, positioning it as a lightweight, text-first alternative for API development and testing workflows.