samber/cc-skills-golang is a collection of reusable agent instructions for Go development, covering areas such as the language, testing, security, and observability. It is for coding agents assisting with production-oriented Golang projects. The catalogue entries are its Go-specific skills, rule, plugin, and instruction.
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.
npx skills add samber/cc-skills-golang --skill golang-modernizegit clone --depth 1 https://github.com/samber/cc-skills-golangWrote 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/skills/samber/cc-skills-golang/golang-modernize)<a href="https://agentmods.dev/skills/samber/cc-skills-golang/golang-modernize"><img src="https://agentmods.dev/badge/skills/samber/cc-skills-golang/golang-modernize/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/skills/samber/cc-skills-golang/golang-modernize"><img src="https://agentmods.dev/badge/skills/samber/cc-skills-golang/golang-modernize.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector pass
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 | $0.00105 | $0.03486 |
| Opus 5 | $0.00053 | $0.01743 |
| Sonnet 5 | $0.00021 | $0.00697 |
| Haiku 4.5 | $0.00011 | $0.00349 |
Grade A, and why
golang-modernize 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 8d 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.
How it starts
The opening of the file, as written. The whole thing — 173 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Persona: You are a Go modernization engineer. You keep codebases current with the latest Go idioms and standard library improvements — you prioritize safety and correctness fixes first, then readability, then gradual improvements.
Orchestration mode: Fan out the five sub-agents described in Full-scan mode (deprecated packages, language features, standard library upgrades, testing patterns, tooling and infra) for a full-codebase modernization scan, and consolidate results using the migration priority guide. On Claude Code, use ultracode to opt into multi-agent orchestration explicitly.
Modes:
- Inline mode (developer is actively coding): suggest only modernizations relevant to the current file or feature. A broad rewrite started during someone else's task buries their change under unrelated churn and makes the diff unreviewable — so record the other opportunities as a note, with the quality gain each would bring, and let the developer schedule them.
- Full-scan mode (explicit
/golang-modernizeinvocation or CI): use up to 5 parallel sub-agents — Agent 1 scans deprecated packages and API replacements, Agent 2 scans language feature opportunities (range-over-int, min/max, any, iterators), Agent 3 scans standard library upgrades (slices, maps, cmp, slog), Agent 4 scans testing patterns (t.Context, b.Loop, synctest), Agent 5 scans tooling and infra (golangci-lint v2, govulncheck, PGO, CI pipeline) — then consolidate and prioritize by the migration priority guide. The scan itself is read-only; once consolidated, apply the resulting codebase-wide rewrite in an isolated worktree so a sweeping multi-file modernization never touches the developer's main tree until reviewed.
Questions: In Inline mode, this skill triggers contextually while the developer is working on something else — ask via the environment's question tool, once, whether to suggest the modernization opportunities noticed or skip for now. If the user skips, stop immediately and do not raise modernization again for the rest of the session.
Go Code Modernization Guide
This skill helps you continuously modernize Go codebases by replacing outdated patterns with their modern equivalents.
Scope: This skill covers roughly the last 3 years of Go releases — from the oldest to the newest row in the Go Version Changelogs table below, updated each Go release. Projects targeting an older go.mod than the table's oldest row still get modernization suggestions, but with narrower coverage; for best results, upgrade the Go version first. Some older modernizations (e.g., any instead of interface{}, errors.Is/errors.As, strings.Cut) are included because they are still commonly missed, but many pre-1.21 improvements are intentionally omitted because they should have been adopted long ago and are considered baseline Go practices by now.
You MUST NEVER conduct large refactoring if the developer is working on a different task. But TRY TO CONVINCE your human it would improve the code quality.
What ships with it
3 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.
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.
- 8d ago Changed · +14 lines · +2 tokens per session 4690bd30545e
- 10d ago Changed · -2 lines · +33 tokens per session 868d95b09154
- 12d ago First seen · 161 lines · 70 tokens per session scan A 7395087b9780
golang-modernize is a skill published in the GitHub repository samber/cc-skills-golang (3,232 stars, last pushed 5d ago), licensed MIT. It adds 105 tokens to every session and 3,486 once invoked, about $0.0005 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 2026-08-30.
Other skills, from other repositories
stack-trace-go-probe
Internal helper for meta-stack-trace-investigator. Use when a Go panic or stack trace needs Go-specific nil/error checks, go test reproducer guidance, and patch targets.
site-launch-checklist
Pre-launch checklist for shipping a new website or web app. Scope: analytics (GA4, PostHog, Google Search Console, Ahrefs), DNS, TLS and backups, legal and CNIL/GDPR compliance, security headers, SEO and GEO (robots.txt, sitemaps, llms.txt, hreflang, schema markup, keyword research), copywriting voice via TONE.md and…
copywriting-hooks
Writes opening hooks and post titles for long-form articles in EN or FR — blog posts, Substack/Medium/dev.to, LinkedIn long-form, newsletters, essays. Trigger whenever the user asks for a hook, opening, lede, intro, first sentence/paragraph, opener, accroche, attaque, phrase d'accroche, or première phrase — including…
chrome-extension
Build Chrome extensions with Manifest V3. Use this skill whenever the user mentions Chrome extension, browser extension, manifest.json, content script, service worker (in extension context), popup, side panel, chrome.runtime, chrome.tabs, chrome.storage, chrome.scripting, or any Chrome extension API. Also trigger when…
copywriting-prose-creator
Codifies how a person or brand writes — lexicon, syntax, rhythm, structure, signature moves — into a PROSE.md guide, independent of emotional tone. Builds from SOUL.md and TONE.md, ports a guide to another channel, or reverse-engineers prose patterns from a corpus. Trigger on PROSE.md, writing style guide, prose…
deep-research
Deep research on any topic — broad parallel web searches, multi-source validation, confidence tracking, and a cited Markdown report. Use whenever the deliverable is a thorough sourced report rather than a quick answer: 'research ', 'deep dive on X', 'analyze the landscape', 'competitive analysis', 'compare these…