Show HN: Oauthcli – CLI for checking/testing/verifying OAuth 2.1 servers

Oauthcli is a new open-source CLI tool designed to simplify the process of checking, testing, and verifying OAuth 2.1 servers, per a GitHub project shared on Hacker News by creator Southclaws.

The tool targets developers and security practitioners who need to validate OAuth 2.1 server implementations and configurations. OAuth 2.1, the current standard for authorization frameworks, has evolved significantly from its predecessors, consolidating best practices and security improvements. A CLI-based testing utility can reduce the friction of manual validation, allowing engineers to programmatically verify that servers conform to the specification's requirements without relying on external services or manual inspection.

Oauthcli is available as an open-source project on GitHub, making it freely accessible for development teams to integrate into their testing workflows. The tool's focus on OAuth 2.1—the latest iteration of the OAuth standard—positions it as a resource for organizations adopting or maintaining current-generation authorization infrastructure.

The project emerged within the developer tool ecosystem, where CLI-based utilities for protocol testing and compliance verification are increasingly common. Other OAuth testing approaches typically involve third-party services, browser-based tools, or ad-hoc scripting; a dedicated CLI reduces dependency on external services and enables integration into CI/CD pipelines for automated verification.