Radar is a single-binary graphical interface for Kubernetes, the system used to run and manage containerized applications across clusters. It helps developers and operators inspect resources, topology, events, Helm deployments, GitOps, traffic, audits, and upgrade impact, while its built-in MCP server lets AI agents inspect and operate clusters through Radar.
Borrowing it
Nothing to install: this file belongs to skyhook-io/radar. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/skyhook-io/radar/main/CLAUDE.mdgit clone --depth 1 https://github.com/skyhook-io/radarWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/skyhook-io/radar/claude-md)<a href="https://agentmods.dev/instructions/skyhook-io/radar/claude-md"><img src="https://agentmods.dev/badge/instructions/skyhook-io/radar/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/skyhook-io/radar/claude-md"><img src="https://agentmods.dev/badge/instructions/skyhook-io/radar/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.12215 | $0.12215 |
| Opus 5.5 | $0.04886 | $0.04886 |
| Sonnet 5.5 | $0.02443 | $0.02443 |
| Haiku 4.5 | $0.01222 | $0.01222 |
Grade C, and why
radar CLAUDE.md scanned grade C with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Reaches for credential fileshighPrivilege escalation
SSH keys, cloud credentials, git-credentials, .npmrc, /etc/shadow: reading these is how a config file becomes a credential leak.
A single Go binary talks directly to the Kubernetes API through kubeconfig (`~/.kube/config`) or the in-cluster ServiceAccount — there is no Radar backend service in between. The same process serves the embedded React UI How it starts
The opening of the file, as written. The whole thing — 280 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Project Overview
Radar is a modern Kubernetes visibility tool — local-first, no account required, no cloud dependency, fast. It provides topology visualization, event timeline, service traffic maps, resource browsing, Helm management, cluster audit (best-practices scanning), and Kubernetes upgrade impact analysis. Runs as a kubectl plugin (kubectl-radar) or standalone binary and opens a web UI in the browser. Open source, free forever. Built by Skyhook.
Code comments
- Default to writing no comments. Only add one when the WHY is non-obvious — a hidden constraint, a subtle invariant, a workaround for a specific bug, or behavior that would surprise a reader.
- Don't explain WHAT the code does — well-named identifiers already do that.
- Don't reference tickets, PRs, bug numbers, or diff history in code comments (e.g. "fixes SKY-123", "Bugbot caught this on PR #584", "used to read X, now…"). Those belong in the PR description and rot as the codebase evolves. The WHY of the change should stand on its own.
- This applies to comments written by any tool (Cursor, Bugbot, Copilot) as well as humans — strip ticket/PR references before merging.
Release and publishing authorization
- Never create, move, or delete Git tags or GitHub Releases; dispatch release or publish workflows; or publish binaries, container images, npm packages, package-manager artifacts, Helm charts, or other distribution artifacts without explicit user approval naming the exact artifact, version, and action.
- Approval to implement a change, open or merge a PR, or prepare release changes is not authorization to publish. If release authorization is ambiguous, stop and ask.
Reference Docs — MUST READ before making changes
Not everything is in this file. The following files contain critical details that are not duplicated here — this file keeps the cross-cutting rules; per-area depth (gating rationale, lifecycle rules, scope semantics) lives in the files below. You MUST read the matching row's files before editing in that area — do not guess or rely on memory. If your area has no row, the handler's or package's own doc comments are the spec; read them first.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago Changed · +4 lines · +375 tokens per session 174569cf38f2
- 3d ago Changed · +313 tokens per session c0c39583fcf6
- 4d ago Changed · +3 lines · +320 tokens per session 76eb786502c0
- 5d ago Changed · +1 lines · +69 tokens per session c1c9249a47dd
- 7d ago Changed · +9 tokens per session f336b543ca58
- 9d ago Changed · +166 tokens per session 08c52890be21
- 14d ago Changed · +1 lines · +158 tokens per session 85b857c8f7e1
- 17d ago Changed · +103 tokens per session 68980cdf293a
- 18d ago Changed · +8 lines · +269 tokens per session 4f7bf33d817d
- 19d ago First seen · 263 lines · 10,433 tokens per session scan C db137f331c7a
radar CLAUDE.md is an instructions file published in the GitHub repository skyhook-io/radar (3,969 stars, last pushed today), licensed Apache-2.0. It adds 12,215 tokens to every session, about $0.0489 per session on Opus 5.5. A static security scan graded it C with 1 finding (reaches for credential files). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.