A guide to writing Go, a programming language, in the style expected by its ecosystem. It covers package design, errors, interfaces, concurrency, testing, and project layout.

Use it when writing, reviewing, refactoring, or organising a Go codebase.

It helps avoid inconsistent Go code and common design or testing mistakes.

go — Plugin for Claude Code by spf13/go-skills

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.

Clone the repo

git clone --depth 1 https://github.com/spf13/go-skills

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/spf13/go-skills/go/github.svg)](https://agentmods.dev/plugins/spf13/go-skills/go)

Your own site

<a href="https://agentmods.dev/plugins/spf13/go-skills/go"><img src="https://agentmods.dev/badge/plugins/spf13/go-skills/go/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.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/spf13/go-skills/go"><img src="https://agentmods.dev/badge/plugins/spf13/go-skills/go.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured The manifest loads nothing itself; its 1 skill cost 113 tokens a session between them.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

go 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 1mo 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

go — 100% identical, 0 lines differ

go/.claude-plugin/plugin.json · 16 lines

What it actually says

{
  "$schema": "https://json.schemastore.org/claude-code-plugin-manifest.json",
  "name": "go",
  "displayName": "Idiomatic Go",
  "description": "Idiomatic Go patterns and best practices — package design, error handling, interfaces, concurrency, testing, and project layout. Written by spf13 (former Go team lead, author of Cobra, Viper, Hugo, Afero).",
  "version": "1.0.0",
  "author": {
    "name": "Steve Francia",
    "email": "[email protected]"
  },
  "homepage": "https://github.com/spf13/go-skills",
  "repository": "https://github.com/spf13/go-skills",
  "license": "MIT",
  "keywords": ["go", "golang", "idiomatic", "patterns", "concurrency", "testing"]
}

Contents

What it installs

The manifest is a name and a version. 1 skill travel with it, and installing the plugin installs all of them — 113 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Skill go A 113 tokens

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.

1mo ago First seen · 16 lines scan A 94ad1407ed6c

Subscribe to this mod's changes

go is a plugin published in the GitHub repository spf13/go-skills (677 stars, last pushed 1mo ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-08-30.

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ginkgo

Write, run, and debug Ginkgo/Gomega test suites in Go. Skills for the tree-construction mental model, spec authoring and cleanup, tables and generated specs, the full decorator reference, filtering, parallelism, ordered/flaky specs, timeouts and async, the CLI and CI configuration, reporting, and JSON-first failure…

onsi/ginkgo · not measured

gomega

Write expressive, correct Gomega assertions in Go. Skills for the Expect/Ω model, synchronous and asynchronous (Eventually/Consistently) assertions, the full matcher catalog, composing and authoring custom matchers, and the gstruct, ghttp, gexec, gbytes, gleak, and gmeasure sub-libraries.

onsi/gomega · not measured

golang

Modern Go development — stdlib-first code style with cobra/viper CLIs, table-driven tests and native fuzzing, canonical project layout with pinned tooling, documentation conventions with LLM-ready CLI references, and GoReleaser-based release engineering.

bitwise-media-group/skills · not measured

go