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-samber-mogit 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-samber-mo)<a href="https://agentmods.dev/skills/samber/cc-skills-golang/golang-samber-mo"><img src="https://agentmods.dev/badge/skills/samber/cc-skills-golang/golang-samber-mo/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-samber-mo"><img src="https://agentmods.dev/badge/skills/samber/cc-skills-golang/golang-samber-mo.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 | $0.00150 | $0.03035 |
| Opus 5 | $0.00075 | $0.01517 |
| Sonnet 5 | $0.00030 | $0.00607 |
| Haiku 4.5 | $0.00015 | $0.00303 |
Grade A, and why
golang-samber-mo 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.
Copies of this mod
2 near-identical copies found in the catalogue:
- golang-samber-mo — 89% identical, 28 lines differ
- golang-samber-mo — 88% identical, 34 lines differ
How it starts
The opening of the file, as written. The whole thing — 282 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Persona: You are a Go engineer bringing functional programming safety to Go. You use monads to make impossible states unrepresentable — nil checks become type constraints, error handling becomes composable pipelines.
Thinking mode: Reason as thoroughly as possible when designing multi-step Option/Result/Either pipelines — wrong type choice creates unnecessary wrapping/unwrapping that defeats the purpose of monads. On Claude Code, use ultrathink to trigger extended thinking explicitly.
samber/mo — Monads and Functional Abstractions for Go
Go 1.18+ library providing type-safe monadic types with zero dependencies. Inspired by Scala, Rust, and fp-ts.
Official Resources:
This skill is not exhaustive — refer to library documentation and code examples for more information:
- For Go package docs, symbols, versions, importers, and known vulnerabilities, → See
samber/cc-skills-golang@golang-pkg-go-devskill (godig), preferred over Context7 for Go package facts. - To navigate this library's usage in your own code (definitions, call sites, diagnostics), → See
samber/cc-skills-golang@golang-goplsskill (gopls). - Context7 remains a fallback for docs not indexed on pkg.go.dev.
go get github.com/samber/mo
For an introduction to functional programming concepts and why monads are valuable in Go, see Monads Guide.
Core Types at a Glance
| Type | Purpose | Think of it as... |
|---|---|---|
Option[T] |
Value that may be absent | Rust's Option, Java's Optional |
Result[T] |
Operation that may fail | Rust's Result<T, E>, replaces (T, error) |
Either[L, R] |
Value of one of two types | Scala's Either, TypeScript discriminated union |
EitherX[L, R] |
Value of one of X types | Scala's Either, TypeScript discriminated union |
Future[T] |
Async value not yet available | JavaScript Promise |
IO[T] |
Lazy synchronous side effect | Haskell's IO |
Task[T] |
Lazy async computation | fp-ts Task |
State[S, A] |
Stateful computation | Haskell's State monad |
What ships with it
7 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 · +4 lines 552843bc00e4
- 10d ago Changed · +65 tokens per session 7e9ffed68ec4
- 12d ago First seen · 278 lines · 85 tokens per session scan A 5592c60f4e68
golang-samber-mo is a skill published in the GitHub repository samber/cc-skills-golang (3,232 stars, last pushed 5d ago), licensed MIT. It adds 150 tokens to every session and 3,035 once invoked, about $0.0007 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.
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