go-code-review

A Go code-review guide covering common mistakes, error handling, concurrency, resource cleanup, and interface design. Go is a programming language commonly used for services and tools.

In plain words
What is it for?
Use it when reviewing Go files, including Kubernetes operator code, to inspect errors, goroutines, channels, context use, resource closing, interfaces, and resource ownership.
Why use it?
It provides checks for bugs and maintainability problems that can be easy to miss during a normal review.

Skill for Claude CodeCodexCursor

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/openshift/lightspeed-agentic-operator/go-code-review
Any agent
npx skills add openshift/lightspeed-agentic-operator --skill go-code-review
Clone the repo
git clone --depth 1 https://github.com/openshift/lightspeed-agentic-operator

Made for: Claude Code, Codex, Cursor.

Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 856 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00041 $0.00856
Opus 5 $0.00020 $0.00428
Sonnet 5 $0.00008 $0.00171
Haiku 4.5 $0.00004 $0.00086

Measured 2d ago against content hash b9dce362394c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

go-code-review scanned grade A with 0 findings 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.cursor/skills/go-code-review/SKILL.md · 85 lines

How it starts

The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Go Code Review

Quick Reference

Issue Type Reference
Missing error checks, wrapped errors references/error-handling.md
Race conditions, channel misuse references/concurrency.md
Interface pollution, naming references/interfaces.md
Resource leaks, defer misuse references/common-mistakes.md

Review Checklist

  • All errors are checked (no _ = err)
  • Errors wrapped with context (fmt.Errorf("...: %w", err))
  • Resources closed with defer immediately after creation
  • No goroutine leaks (channels closed, contexts canceled)
  • Interfaces defined by consumers, not producers
  • Interface names end in -er (Reader, Writer, Handler)
  • Exported names have doc comments
  • No naked returns in functions > 5 lines
  • Context passed as first parameter
  • Mutexes protect shared state, not methods

Kubernetes Operator Specific

  • Owner references set with controllerutil.SetControllerReference()
  • Finalizers added/removed safely (check for DeletionTimestamp)
  • Context propagated through reconcile loops
  • Client errors handled (distinguish NotFound vs other errors)
  • Status updates separate from spec changes
  • Resource watching pattern: Owned resources tracked via ResourceVersion; external dependencies use explicit watches or indexing as appropriate for the controller
  • Reconcile functions are idempotent (safe to call multiple times)
  • Resource updates check semantic equality first (apiequality.Semantic.DeepEqual)
  • Return ctrl.Result{Requeue: true} for transient issues, errors for permanent failures
  • RBAC markers (//+kubebuilder:rbac) present for all resource access in controllers

When to Load References

  • Reviewing error return patterns → error-handling.md
  • Reviewing goroutines/channels → concurrency.md
  • Reviewing type definitions → interfaces.md
  • General Go review → common-mistakes.md

Read the full file on GitHub · 85 lines

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

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.

  1. 2d ago First seen · 85 lines · 41 tokens per session scan A b9dce362394c

Subscribe to this mod's changes

go-code-review is a skill published in the GitHub repository openshift/lightspeed-agentic-operator (10 stars, last pushed 3d ago), licensed Apache-2.0. It adds 41 tokens to every session and 856 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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