Radar
Open-source Kubernetes UI with topology, Helm, GitOps, AI via MCP.
Radar delivers a modern, fast Kubernetes dashboard that genuinely improves on Lens and k9s with built-in AI integration. The OSS version is fully functional and free, while Cloud adds valuable team features at a fair per-cluster price. If you want a modern UI with MCP support, this is the best open-source option today.
- Platform engineers managing multiple Kubernetes clusters
- On-call teams needing fast incident debugging
- DevOps teams adopting GitOps and Helm workflows
- Organizations requiring RBAC and SSO for Kubernetes access
- Users who prefer a CLI-only workflow like k9s
- Teams that need deep application performance monitoring
- Organizations without Kubernetes infrastructure
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In short
Radar — Open-source Kubernetes UI with topology, Helm, GitOps, AI via MCP. Best for Platform engineers managing multiple Kubernetes clusters, On-call teams needing fast incident debugging, DevOps teams adopting GitOps and Helm workflows. Free to start; paid plans from $99/mo.
What's new in Radar
Checked 15 days agoAcross the latest 10 updates: 8 feature updates, 1 launch and 1 pricing change.
OSS v1.8.0: Browser-based exec and port-forward for modern clusters
Exec and port-forward now work against modern clusters and gateways, with fallback to alternative transports like websocket exec.
OSS v1.8.0: Helm upgrade tracking, revision comparison, and failure diagnosis
Helm gets revision-aware tooling: upgrade tracking for OCI-published charts, compare any two revisions, and surface failures as Issues for MCP AI agents.
OSS v1.8.0: Issues engine collapses noise into root-cause incidents
Issues now coalesce same-subject failures into one row, link cross-subject causal problems with confidence labels, and appear in resource detail views.
OSS v1.8.0: Standalone Radar, redesigned navigation and search
Radar OSS v1.8.0 introduces left nav rail, global omnibar search, and rebuilt list primitives for Issues, Checks, Applications, and GitOps.
Introducing Radar Cloud: Multi-Cluster Kubernetes Visibility for Teams
Radar Cloud is a hosted team layer on top of Radar OSS: fleet views, SSO on every plan, K8s-native RBAC via impersonation. Cluster state never leaves.
Why Radar Cloud Doesn't Cache Your Cluster State
Radar Cloud uses a reverse-proxy model instead of caching cluster state, avoiding stale data and security risks from storing cluster state externally.
SSO and RBAC Without Passing Around Kubeconfigs
Radar Cloud provides SSO and scoped RBAC via impersonation, eliminating the need to distribute kubeconfig files for contractor access.
Cluster Audit: The 31 Checks That Catch What You Forgot
Radar's built-in audit runs 31 best-practice checks against live cluster state, inspired by Polaris and the NSA/CISA hardening guide.
MCP for Kubernetes: Live Cluster Context for AI Tools
Radar's built-in MCP server gives Claude, Cursor, and Copilot a token-optimized, RBAC-aware view of the cluster, replacing raw kubectl context for AI agents.
Why We Priced Radar Per Cluster, Not Per Seat
Radar uses per-cluster pricing instead of per-seat to encourage broad team visibility. The article compares five pricing models and explains the choice.
Viability Score
How likely is Radar to still be operational in 12 months? Based on 4 signals — momentum (how recently it shipped), wrapper dependency, revenue model, and web presence.
Last calculated: July 2026
How we score →Key Features
- Live resource topology graph with ELK.js layout and SSE updates
- Event timeline with past-1-hour TTL coverage
- Helm release tracking, revision comparison, and rollback
- GitOps visibility for ArgoCD and Flux
- Container image filesystem browser (no kubectl exec)
- Cluster audit with 31 best-practice checks
- MCP server for AI agents (Claude, Cursor, Copilot)
- Exec, attach, cp, and port-forward from browser
- Service HTTP probing from inside the cluster
- Multi-cluster fleet view and search (Cloud)
- SSO and scoped RBAC per cluster or namespace
- Slack, PagerDuty, MS Teams alert routing
- Global omnibar with filter pills and autocomplete
- Operational issues coalescing into root-cause incidents
- Cost and traffic visibility (Cloud)
About Radar
Radar is an open-source Kubernetes UI that consolidates debugging and observability workflows into a single, fast tool. It provides live topology graphs, event timelines, resource management, Helm release tracking, GitOps visibility, container image filesystem browsing, cluster auditing, and an MCP server for AI tool integration. Designed for platform engineers and on-call teams managing multiple clusters, it runs as a standalone binary or self-hosted in-cluster with RBAC and OIDC. Radar is Apache 2.0 licensed and does not require an account, agents, or cloud dependency. Radar Cloud is a hosted layer that adds fleet aggregation, persistent event retention, SSO, alerts, and cost/traffic visibility for teams that need multi-cluster visibility and governance. The v1.8.0 release introduces a left nav rail, global omnibar search, root-cause issue coalescing, and Helm revision comparison. Radar is a free, open-source alternative to Lens and k9s, focused on a modern UI and AI integration.
Behind the Verdict
Radar hits a sweet spot for Kubernetes teams tired of cobbling together multiple tools. The OSS version gives you topology, events, Helm, GitOps, image browsing, auditing, and MCP — all free and self-hosted. The v1.8.0 updates, especially the issues engine that collapses noise into root-cause incidents, show the team understands on-call pain. The MCP server is a standout: it lets Claude, Cursor, or Copilot query live cluster state without exposing kubectl, which is both safer and more token-efficient. For teams that need multi-cluster visibility, Radar Cloud adds fleet-wide search, SSO, and alert routing at $99/cluster/month — no per-seat pricing, which encourages broad team adoption. Where it falls short: if you're looking for deep APM or metrics-driven monitoring, this isn't a Grafana or Datadog replacement. The OSS lacks persistent event retention (only past 1-hour TTL), so you'll need Cloud or another tool for historical analysis. Also, the desktop app is relatively new, so CLI veterans may still prefer k9s for speed. Compared to Lens, Radar is more modern and doesn't gate features behind a paid subscription — the OSS is fully featured. Compared to Headlamp, Radar has richer GitOps and Helm views. For most platform engineers, it's a strong choice.
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Use Cases
- Debug a crashing pod by searching across clusters and rewinding the event timeline.
- Roll back a Helm release to a previous revision with one click.
- View the sync state of ArgoCD applications alongside the resources they produce.
- Audit cluster compliance against 31 best-practice checks inspired by NSA/CISA guidelines.
- Probe a service's HTTP endpoint from inside the cluster when port-forward is unavailable.
Limitations
- The free self-hosted version lacks fleet aggregation, persistent event retention beyond 1 hour, and advanced alert routing available in Cloud plans.
- The Cloud Free tier is limited to 3 clusters.
- Some features like SCIM provisioning, 1-year audit log retention, and custom alert rules are gated behind the Enterprise plan.
12-month cost
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
Integrations
Resources & Guides
- Documentationradarhq.io
Llms · Radar
Full product docs from radarhq.io
- Documentationradarhq.io
Docs · Radar
Full product docs from radarhq.io
- Resourceradarhq.io
Why Radar Cloud Doesnt Cache Your Cluster State · Radar
Helpful link from radarhq.io
- Resourceradarhq.io
Sso And Rbac Without Passing Around Kubeconfigs · Radar
Helpful link from radarhq.io
- Resourceradarhq.io
Cluster Audit The 31 Checks That Catch What You Forgot · Radar
Helpful link from radarhq.io
- Resourceradarhq.io
Mcp For Kubernetes Live Cluster Context For Ai Tools · Radar
Helpful link from radarhq.io
- Resourceradarhq.io
Five Questions You Cant Answer With Kubectl · Radar
Helpful link from radarhq.io
Official links
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