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OIDC command line client, developed by Jens Reimann, is a lightweight security utility designed to obtain, validate, and manage OpenID Connect tokens directly from the terminal. Released under version 0.7.2 as the seventh iteration of the project, the tool targets developers, DevOps engineers, and system administrators who need non-interactive, scriptable authentication against any OIDC-compliant identity provider such as Keycloak, Auth0, Azure AD, or Google Identity. Typical use cases include automating CI/CD pipeline log-in steps, refreshing access tokens for Kubernetes API servers, signing Terraform provider configurations, or securely issuing short-lived credentials to background services without embedding hard-coded secrets. Written in a portable systems language, the binary runs cross-platform and exposes a concise set of sub-commands—authorize, token, verify, and logout—that return JSON or plain text suitable for chaining with jq, curl, or PowerShell. Configuration is declared through environment variables or a concise YAML file, allowing teams to store client ID, client secret, scopes, and issuer URL alongside encrypted vault entries. Advanced features such as PKCE, device-flow, automatic token refresh, and local key-set caching reduce exposure to network failures while keeping shell scripts compliant with contemporary OAuth2 security recommendations. Because the utility is self-contained and dependency-free, it can be dropped into containers, GitHub Actions runners, or embedded devices where GUI browsers are unavailable, making headless SSO workflows both practical and auditable. OIDC command line client is available for free on get.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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