A terminal HTTP API client that organizes requests in files, supports scripting, and uses curl/wget/httpie as backends.
Ain is a terminal-based HTTP API client that allows developers to define and organize API requests using simple text files. It solves the problem of managing and scripting API calls in a CLI environment by providing a structured yet flexible format that integrates with shell tools and supports dynamic inputs via environment variables and executables.
Developers and DevOps engineers who frequently work with REST APIs from the command line and need a scriptable, file-based approach to manage and automate API requests.
Ain offers a lightweight, composable alternative to GUI API clients by leveraging existing command-line tools (curl, wget, httpie) and enabling seamless integration with shell scripts and pipelines, making it ideal for automation and terminal-centric workflows.
A HTTP API client for the terminal
Open-Awesome is built by the community, for the community. Submit a project, suggest an awesome list, or help improve the catalog on GitHub.
Templates in .ain files enable hierarchical organization and reuse, as demonstrated in the examples folder, allowing developers to structure API calls across files and folders.
Executables embedded in templates can generate dynamic values, such as JWT tokens from scripts, making it easy to automate authentication and data processing within API calls.
Leverages existing tools like curl, wget, or httpie for execution, providing familiarity and compatibility, with the ability to switch backends via the [[Backend]] section.
Clear fatal error messages include file names and line numbers, and the -p flag outputs the generated command for inspection, aiding in troubleshooting as highlighted in the README.
Requires curl, wget, or httpie to be installed and available on the PATH, adding setup complexity and potential compatibility issues in minimal or controlled environments.
The escaping rules for symbols like #, ${, and $( are intricate, as detailed in the Escaping section, which can lead to errors and a steeper learning curve for template creation.
Authentication must be handled manually through scripts or environment variables, unlike some GUI tools that offer integrated OAuth flows or token management without extra work.
Focused solely on HTTP-based APIs, with no native support for other protocols like GraphQL or WebSockets, requiring additional tooling or workarounds for such use cases.
ain is an open-source alternative to the following products:
Insomnia is an open-source API client for designing, testing, and debugging REST, GraphQL, and other web APIs with a collaborative interface.
A full-featured HTTP client and API testing tool for macOS with a graphical interface for designing, testing, and debugging web services.
Postman is a collaboration platform for API development that allows developers to design, test, and document APIs.