Argocd

The REST API covers applications (create, sync, rollback, delete), repositories (Git source management), clusters (target Kubernetes clusters), projects (RBAC grouping), and settings. Agents can create applications pointing to Git repositories, trigger manual syncs when automated sync isn't sufficient, check application health and sync status, view deployment history, and execute rollbacks to previous revisions. The resource tree API provides visibility into individual Kubernetes resources managed by each application.

Documentation is thorough and covers the API, RBAC, sync strategies, and operational patterns. The sync strategies documentation (auto-sync, sync waves, sync hooks) is critical for teams building deployment automation. Teams evaluating Argo CD versus Flux CD for GitOps should compare the API accessibility, UI quality, and the operational model differences.

Authentication uses JWT tokens, API keys, or SSO (OIDC/SAML) integration. The RBAC system controls access at the application and project level — agents can be given specific permissions for the applications they manage. The project-scoped RBAC model enables multi-team Kubernetes environments where different agents manage different application sets.

Argo CD is the leading GitOps continuous delivery tool for Kubernetes — it watches Git repositories for declarative application definitions and automatically synchronizes Kubernetes cluster state to match. Its REST API and gRPC API enable agents to manage the full deployment lifecycle: creating applications, triggering syncs, monitoring deployment health, and executing rollbacks. For teams running Kubernetes, Argo CD provides the standard GitOps control plane that agents can use for deployment automation.

Reliability is self-hosted on Kubernetes — Argo CD itself runs as Kubernetes deployments and inherits the cluster's availability characteristics. High-availability mode runs multiple replicas of the Argo CD components. The GitOps model provides inherent disaster recovery — cluster state can be rebuilt from the Git repository, and Argo CD itself can be bootstrapped from its own GitOps configuration.