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OIDC command line client, developed by Jens Reimann, is a compact security utility designed to obtain, validate, and refresh OpenID Connect tokens directly from a Windows terminal. Released in version 0.6.6 as the sixth iterative build, the program targets administrators, DevOps engineers, and automation scripts that must authenticate against modern OAuth 2.0 / OIDC-protected APIs without launching a browser or graphical interface. Typical use cases include non-interactive sign-in for CI/CD pipelines, headless service-to-service calls, secure Helm or kubectl plugin operations, and rapid token inspection during troubleshooting. The executable accepts standard OIDC parameters—issuer URL, client ID, client secret, scopes, and redirect URI—then performs the authorization code flow with PKCE, prints the resulting JWT access and ID tokens to stdout, and optionally caches refresh tokens in the user profile for silent renewal. Exit codes and JSON output make the tool equally suitable for PowerShell, cmd, and bash scripts, while built-in validation of issuer certificates, audience claims, and token expiration reduces the risk of misconfiguration. Because the utility ships as a single stand-alone binary with no runtime dependencies beyond the Windows cryptographic APIs, it can be embedded in containers or deployment artifacts without enlarging the base image. The changelog spanning six releases shows progressive refinement of device-code flow support, enhanced proxy compatibility, and stricter RFC 7636 compliance. OIDC command line client is categorized under Security > Password & Token Managers. The software is available for free on wget.nero.com, with downloads provided via trusted Windows package sources (e.g. winget), always delivering the latest version, and supporting batch installation of multiple applications.
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