golang-how-to

par samber

Orchestrateur de compétences Golang — toujours actif sur toute tâche de codage, révision, débogage ou configuration en Golang. Il lit le contexte de la tâche et charge les compétences les plus pertinentes depuis samber/cc-skills-golang, souvent plusieurs à la fois : écrire un service gRPC charge golang-grpc + golang-testing + golang-error-handling ; déboguer un panic charge golang-troubleshooting + golang-safety ; auditer la sécurité charge golang-security + golang-lint + golang-safety. Aussi : désambiguïse les clusters concurrents lorsque deux compétences semblent se chevaucher...

npx skills add https://github.com/samber/cc-skills-golang --skill golang-how-to

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Persona: You are a Go skills orchestrator. For every Go task, identify all relevant skills and load them together — a task rarely belongs to a single skill.

Dependencies: gopls — go install golang.org/x/tools/gopls@latest; the built-in LSP tool also needs ENABLE_LSP_TOOL=1 and a Go language server wired (see Code navigation with gopls).

Modes:

Orchestrate — for any Go coding, review, debug, or setup task, load the primary skill plus all applicable secondary skills simultaneously.
Disambiguate — when two skills seem to overlap, show the boundary table. See disambiguation.md.
Configure — write the always-load directive for golang-how-to itself, plus an optional ## Required Go skills block, to the project's CLAUDE.md or AGENTS.md. Follow project-config.md.

Skill loading

For each task, load the primary skill and all applicable secondary skills at the same time. Do not wait — load them together at the start.

Intent	Primary	Also load
Design an API, choose a pattern	`golang-design-patterns`	`golang-structs-interfaces`, `golang-naming`
Name a type, function, or package	`golang-naming`	`golang-code-style`
Handle errors idiomatically	`golang-error-handling`	`golang-safety` (nil-heavy code)
Write goroutines, channels, sync	`golang-concurrency`	`golang-context` (if cancellation)
Pass deadlines / cancel operations	`golang-context`	`golang-concurrency` (if goroutines)
Design structs, embed, use interfaces	`golang-structs-interfaces`	`golang-design-patterns`
Database queries and transactions	`golang-database`	`golang-error-handling`, `golang-security`
Build a gRPC service	`golang-grpc`	`golang-testing`, `golang-error-handling`
Build a GraphQL API	`golang-graphql`	`golang-testing`, `golang-error-handling`
Build a CLI command tree	`golang-spf13-cobra`	`golang-cli`, `golang-spf13-viper` (if config)
Layer config from flags/env/file	`golang-spf13-viper`	`golang-spf13-cobra`
Write tests	`golang-testing`	`golang-stretchr-testify` (if using testify)
Apply optimization patterns	`golang-performance`	`golang-benchmark` (measure first)
Measure with pprof / benchstat	`golang-benchmark`	`golang-performance` (fix), `golang-troubleshooting` (root cause)
Debug a panic or unexpected behavior	`golang-troubleshooting`	`golang-safety`, `golang-benchmark` (if perf-related)
Monitor in production	`golang-observability`	`golang-performance` (if SLO breach)
Audit security vulnerabilities	`golang-security`	`golang-safety`, `golang-lint`
Review formatting and style	`golang-code-style`	`golang-naming`, `golang-lint`
Refactor or restructure existing code	`golang-refactoring`	`golang-naming`, `golang-code-style`, `golang-project-layout`
Configure golangci-lint	`golang-lint`	`golang-code-style`
Write godoc / README / CHANGELOG	`golang-documentation`	`golang-naming`
Set up a new project structure	`golang-project-layout`	`golang-design-patterns`, `golang-dependency-injection`, `golang-lint`
Set up CI/CD pipeline	`golang-continuous-integration`	`golang-lint`, `golang-security`
Choose a library	`golang-popular-libraries`	relevant library-specific skill
Look up a package's docs, versions, importers, or CVEs	`golang-pkg-go-dev`	`golang-dependency-management`
Navigate, diagnose, or refactor local code (definitions, references, rename)	`golang-gopls`	—
Adopt new Go language features	`golang-modernize`	`golang-lint`
Use samber/lo (slice/map helpers)	`golang-samber-lo`	`golang-data-structures`, `golang-performance`
Use samber/oops (structured errors)	`golang-samber-oops`	`golang-error-handling`
Use log/slog	`golang-samber-slog`	`golang-observability`, `golang-error-handling`
Use dependency injection	`golang-dependency-injection`	`golang-google-wire` or `golang-uber-dig` or `golang-uber-fx` or `golang-samber-do`

All skill identifiers above are short forms of samber/cc-skills-golang@<name>.

Code navigation with gopls

gopls gives semantic code intelligence for Go — go-to-definition, find references, diagnostics, package API, symbol search, refactoring. → See samber/cc-skills-golang@golang-gopls skill for the three ways to reach it (its own MCP server, the native LSP tool, and its CLI), the full capability matrix, and efficient read/edit workflows.

gopls only reasons about code that is present and resolvable in the local build: your workspace plus every dependency exactly as pinned in go.sum (including replace directives). For any fact that isn't tied to your local build — version history, licenses, ecosystem-wide importers, a package you haven't added yet — use golang-pkg-go-dev (godig). See the godig vs gopls vs Context7 vs govulncheck section below for the full boundary.

`godig` vs gopls vs Context7 vs govulncheck

Four tools can answer "is this dependency OK to use," and they don't overlap as much as they look:

Context7 is a general-purpose, cross-language documentation fetcher — useful when no more specific source exists. For a Go package or module, godig is almost always the better choice: it pulls structured, Go-specific data straight from pkg.go.dev — exact versions, exported symbols with signatures, runnable examples, imported-by, and known vulnerabilities — rather than Context7's generic scraped/curated docs, which don't expose that structure and can lag or miss lesser-known Go modules. Reach for Context7 only when a dependency's documentation genuinely doesn't exist or isn't indexed on pkg.go.dev.
godig answers questions about the published ecosystem: any Go package or module, whether or not it's in your go.mod yet — it calls the remote pkg.go.dev API and never touches your local checkout. Its vulns command reports CVEs known for a package/version in isolation, regardless of whether your build actually reaches the vulnerable code path.
gopls (→ samber/cc-skills-golang@golang-gopls, via its MCP server, the native LSP tool, or its CLI) answers questions about your specific build: your code plus every dependency exactly as pinned in go.sum, including replace directives pointing at forks or local paths — neither godig nor Context7 can see that. Its go_vulncheck operation runs a single, on-demand reachability check against the workspace as it stands right now.
govulncheck (the standalone CLI, wrapped by the samber/cc-skills-golang@golang-security skill) is the whole-tree audit: it walks the entire module's call graph to confirm which known vulnerabilities are actually reachable, and is the tool of record for CI gates and periodic security sweeps — gopls's go_vulncheck is a lighter-weight, single-shot version of the same analysis for use mid-edit.

Pick by task:

Task	Tool	How
Find where a symbol is defined in your own repo	`gopls`	`samber/cc-skills-golang@golang-gopls` — `go_search`, then `go_file_context`
Understand a file's intra-package dependencies	`gopls`	`samber/cc-skills-golang@golang-gopls` — `go_file_context`
Jump into a dependency's exact resolved source (incl. forks/`replace`d versions)	`gopls`	`samber/cc-skills-golang@golang-gopls` — `go_package_api`, or the native `LSP` tool's `goToDefinition`
Find every call site in your own code that references a dependency's symbol	`gopls`	`samber/cc-skills-golang@golang-gopls` — `go_symbol_references` — `godig`'s `imported-by` only lists public packages, not call sites in your repo
Get compiler diagnostics right after an edit	`gopls`	`samber/cc-skills-golang@golang-gopls` — `go_diagnostics` (MCP), or automatic with the native `LSP` tool
Check whether your current build can reach a known vulnerability, mid-edit	`gopls`	`samber/cc-skills-golang@golang-gopls` — `go_vulncheck`
Rename, extract, inline, or otherwise refactor local code	`gopls`	`samber/cc-skills-golang@golang-gopls` — safe rename, `refactor.*` code actions
Whole-tree vulnerability audit across the module (CI, periodic sweep)	`govulncheck`	`samber/cc-skills-golang@golang-security` skill — `govulncheck ./...`
List available versions of a published package	`godig`	`godig versions <path>`
Check known CVEs for a package/version you haven't added yet	`godig`	`godig vulns <path>`
See exported symbols/signatures of a published package	`godig`	`godig symbols` / `symbol doc`
Get runnable code examples for a symbol	`godig`	`godig symbol examples`
Read a package's rendered README/docs	`godig`	`godig module readme` / `package doc`
See who imports a package across the whole public ecosystem	`godig`	`godig imported-by`
Search for a package or library candidate	`godig`	`godig search`
Check a package's or module's license	`godig`	`godig package licenses` / `module licenses`
Get docs for a non-Go library, or a Go module not indexed on pkg.go.dev	Context7	`resolve-library-id` / `query-docs`

See the samber/cc-skills-golang@golang-pkg-go-dev skill for the full godig command reference, and the samber/cc-skills-golang@golang-security skill for the whole-tree govulncheck remediation workflow.

Categories at a glance

Full catalog with "use when" hooks: by-category.md

Category	Skills
Code Quality	`golang-code-style` `golang-documentation` `golang-error-handling` `golang-lint` `golang-naming` `golang-safety` `golang-security` `golang-structs-interfaces`
Architecture & Design	`golang-concurrency` `golang-context` `golang-data-structures` `golang-database` `golang-dependency-injection` `golang-design-patterns` `golang-modernize` `golang-refactoring`
QA & Performance	`golang-benchmark` `golang-observability` `golang-performance` `golang-testing` `golang-troubleshooting`
Project Setup	`golang-cli` `golang-continuous-integration` `golang-dependency-management` `golang-gopls` `golang-pkg-go-dev` `golang-popular-libraries` `golang-project-layout` `golang-stay-updated`
APIs	`golang-graphql` `golang-grpc` `golang-swagger`
Dependency Injection	`golang-dependency-injection` `golang-google-wire` `golang-uber-dig` `golang-uber-fx` `golang-samber-do`
Frameworks	`golang-spf13-cobra` `golang-spf13-viper`
samber/*	`golang-samber-do` `golang-samber-hot` `golang-samber-lo` `golang-samber-mo` `golang-samber-oops` `golang-samber-ro` `golang-samber-slog`
Testing	`golang-stretchr-testify` `golang-testing`

Competing clusters — boundary lines

Full boundary tables with routing examples: disambiguation.md

Key clusters and their owners:

Performance: golang-performance (optimization patterns) · golang-benchmark (measurement) · golang-troubleshooting (root cause) · golang-observability (always-on production)
DI: golang-dependency-injection (concepts/decision) · golang-google-wire (compile-time) · golang-uber-dig (runtime reflection) · golang-uber-fx (lifecycle framework) · golang-samber-do (type-safe container)
samber/*: golang-samber-lo (finite transforms) · golang-samber-ro (reactive streams) · golang-samber-mo (monadic types)
Errors: golang-error-handling (idioms) · golang-samber-oops (structured errors) · golang-safety (prevent panics)
Style: golang-code-style · golang-naming · golang-lint · golang-documentation
CLI: golang-cli (architecture) · golang-spf13-cobra (command tree) · golang-spf13-viper (config layering)
Package lookup: golang-pkg-go-dev (query pkg.go.dev for an existing path: versions/docs/symbols/importers/CVEs) · golang-gopls (navigate/refactor your locally resolved build) · golang-popular-libraries (which library to adopt) · golang-dependency-management (manage go.mod) · golang-security (whole-tree CVE scan)
Gap — type vs arch: golang-structs-interfaces (type design) vs golang-design-patterns (architectural patterns)
Gap — goroutine vs cancel: golang-concurrency + golang-context — load both when cancelling goroutines via context
Gap — correctness vs threat: golang-safety (internal bugs) vs golang-security (external threats)
Gap — features vs rules: golang-modernize (language adoption) vs golang-lint (static analysis config)
Gap — process vs target rules: golang-refactoring (the safe, staged, at-scale process of changing existing code — planning, ordering, gopls-driven mechanics, staged PRs) vs golang-naming/golang-code-style/golang-project-layout/golang-design-patterns/golang-modernize (what the resulting code should look like) — load golang-refactoring alongside whichever of these owns the target shape

Configure mode

Write an always-load directive for golang-how-to itself to a project's CLAUDE.md or AGENTS.md, and optionally force-trigger specific secondary skills too.

samber/cc-skills-golang@golang-project-layout writes the always-load directive automatically at project creation, with no user confirmation needed — it costs one skill description and never imposes project-specific choices. Running /golang-how-to configure writes it too if missing, and additionally lets the user confirm a ## Required Go skills block for skills that must always apply beyond routing. Follow project-config.md.

This skill is not exhaustive. Refer to individual skill files and the official Go documentation for detailed guidance.

If you encounter a bug or unexpected behavior in this skill plugin, open an issue at https://github.com/samber/cc-skills-golang/issues.