概要
This skill provides specialized guidance for implementing secretless authentication between GitHub Actions and major cloud providers like GCP and Azure. By leveraging OpenID Connect (OIDC) federation, it replaces risky, long-lived service account keys with short-lived, cryptographically bound tokens that expire in minutes. It offers standardized patterns for subject claim validation, least-privilege trust policies, and environment-level isolation, ensuring that your automated deployments and infrastructure-as-code workflows remain secure without the burden of manual secret rotation or the risk of credential leakage.