Radar is a Developer tools tool: Open-source Kubernetes UI and MCP server for engineers and agents.

How much does Radar cost?

Radar is Open source; there is no mandatory paid plan.

What are the best alternatives to Radar?

Community-listed alternatives to Radar include Overmind, Tessary, CloudKnife, Navige.

Does Radar have a free trial?

Yes, Radar offers a 14-day free trial.

What does Radar integrate with?

Radar integrates with Helm, Argo CD, Flux, Prometheus, Slack, Claude Code and more.

Which platforms does Radar support?

Radar is available on web, macos, windows, linux.

Radar

Open-source Kubernetes UI and MCP server for engineers and agents

Open source · $149Uptime & monitoring Developer tools

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Radar is a developer tools tool for Developers and Small businesses, offered as open source ($149/mo). Founded in 2023. Popular alternatives include Overmind, Tessary, CloudKnife.

About Radar

Radar is an open-source Kubernetes UI and MCP server from Skyhook (KoalaOps, Inc.), a Y Combinator Winter 2023 company based in Tel Aviv. It shows engineers what is broken in a cluster and why, and gives AI agents such as Claude Code, Codex and Cursor the same context. The core is Apache 2.0 licensed and ships as a single Go binary.

Radar runs locally from your kubeconfig, as a desktop app for macOS, Windows and Linux, or in-cluster via Helm. It groups failures by root cause and blast radius, draws a live topology graph, keeps events past the one-hour default, manages Helm releases, shows Argo CD and Flux drift and runs 44 audit checks. The MCP server has a read-only endpoint plus one with write tools. Radar OSS is free with no feature gates; Radar Cloud adds fleet views, alerts and hosted investigations, free for 3 clusters and priced per cluster above that.

It fits platform and DevOps teams that want a free cluster UI and safe agent access in one tool. Lens and k9s are long-standing clients for daily cluster browsing, while Datadog and Dynatrace cover Kubernetes inside broader observability suites. Per-cluster pricing adds up for large fleets, and Cloud SSO needs Enterprise.

Radar first launched on Product Hunt on May 3, 2026 and finished #3 of the day. On October 29, 2026 it relaunched as "You don't need an AI SRE. Give your agent Radar.", focused on read-only AI investigations that cite evidence, and was #8 on the daily leaderboard when checked late that day. Buying tip: start with the free binary and read-only MCP endpoint, then use the 14-day trial to test Team.

Key features of Radar

Issues queue that groups failures by root cause and blast radius
Live topology graph and resource browser for any conformant cluster
Event and change timeline with diffs beyond the one-hour default
Helm release views with upgrades and rollbacks
Argo CD and Flux drift detection, diagnosis and sync
Cluster audit with 44 best-practice checks
MCP server with read-only and write endpoints for AI agents
Radar Cloud fleet views, Slack or webhook alerts and hosted investigations

Pros and cons

Pros

Fully featured open-source build under Apache 2.0
Single binary and desktop app for macOS, Windows and Linux, no account needed
Read-only MCP endpoint lets agents inspect clusters safely
Cloud Free covers 3 clusters with unlimited users
SOC 2 Type 2 attested hosted service

Cons

Per-cluster pricing gets expensive for large fleets
Radar Cloud SSO and SCIM only on the $299 Enterprise plan
Team plan keeps just 3 days of timeline history
Local OSS mode views one cluster at a time
Not a replacement for long-term metrics and log storage

Radar pricing

Radar uses a open source model. A 14-day free trial is available.

Plan	Price	Includes
Radar OSS	$0	Apache 2.0, unlimited clusters, one cluster at a time
Cloud Free	$0	3 hosted clusters, unlimited users, 100 investigations/mo
Team	$149 / cluster/mo	Scoped RBAC, fleet cost rollup; 20% off annual contracts
Enterprise	$299 / cluster/mo	SSO, SCIM, SIEM export, self-managed; 20% off annual contracts
Custom	Custom	Annual contract, air-gapped, data residency, 99.9% SLA

Source: radarhq.io · checked on Oct 30, 2026

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How Radar compares in Developer tools

Rank by votes: #2 / 68
Starting price: $149
Free alternatives: 17

Radar ranks #2 of 68 developer tools tools by community votes and is priced above most tools in the category.

Common use cases

1Debugging a failing deployment from its root cause and blast radius
2Giving Claude Code or Cursor read-only cluster context through MCP
3Checking Argo CD or Flux drift before and after a release
4Running a shared in-cluster UI for a team with per-user RBAC
5Auditing clusters against 44 best-practice checks before an upgrade
6Watching a multi-cluster fleet with alerts routed to Slack

Best for

Platform and DevOps teams that want a free open-source Kubernetes UI and a safe way to give AI agents cluster context.

Not ideal for

Teams that need full-stack metrics, logs and APM in one hosted suite (Datadog, Dynatrace).

Integrations

Helm
Argo CD
Flux
Prometheus
Slack
Claude Code
Cursor
Codex

Our take

Radar is an easy recommendation for anyone running Kubernetes: the open-source binary costs nothing and its read-only MCP endpoint is a sensible way to let agents investigate. Pay for Radar Cloud only when you need fleet views, alerts and shared investigations, and price it per cluster before committing.

FAQ

What is Radar?: Radar is a Developer tools tool: Open-source Kubernetes UI and MCP server for engineers and agents.
How much does Radar cost?: Radar is Open source; there is no mandatory paid plan.
What are the best alternatives to Radar?: Community-listed alternatives to Radar include Overmind, Tessary, CloudKnife, Navige.
Does Radar have a free trial?: Yes, Radar offers a 14-day free trial.
What does Radar integrate with?: Radar integrates with Helm, Argo CD, Flux, Prometheus, Slack, Claude Code and more.
Which platforms does Radar support?: Radar is available on web, macos, windows, linux.
Who is Radar for?: Platform and DevOps teams that want a free open-source Kubernetes UI and a safe way to give AI agents cluster context.

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