New: 98,000+ skills indexed from GitHub repos with 100+ stars · every skill safety-checkedBrowse top skillsTop skills
Esc to closeBrowse all skills
Submit a skillBrowse skills
Submit a skillBrowse skills

Agent skill

Golang Concurrency

by HoangNguyen0403 in HoangNguyen0403/agent-skills-standard

Write safe concurrent Go code with goroutines, channels, and context.

MITAuto-check passedDevelopment

Install Golang Concurrency

skills CLI
$ npx skills add HoangNguyen0403/agent-skills-standard --skill golang-concurrency -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install HoangNguyen0403/agent-skills-standard golang-concurrency --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standard.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/golang/golang-concurrency .claude/skills/golang-concurrency && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
golang-concurrency
GitHub stars
572
Token cost
~671 tokens
SKILL.md length
231 words
Files
4 (incl. references)
Skills in repo
211
Repo updated
First seen
Licence
MIT

At a glance

Write safe concurrent Go code with goroutines, channels, and context.

  • Works in 5 steps: Choose primitive — errgroup.Group for… → Bound Concurrency with Semaphore — Cap… → Respect Context Cancellation —… → …
  • Implementing concurrency with goroutines
  • SKILL.md covers Priority: P0 (CRITICAL), Principles, Implementation Workflow and Anti-Patterns, plus 1 more section
  • Calls go

What it does

Golang Concurrency is an agent skill from HoangNguyen0403/agent-skills-standard. Write safe concurrent Go code with goroutines, channels, and context. Use when implementing concurrency with goroutines, channels, or context in Go.

Its SKILL.md is about 670 tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including reference files (for example `evals/evals.json`, `references/concurrency-patterns.md` and `references/context-usage.md`).

It sits in Development, covering Async programming. It works with Go. The repository describes itself as: A collection of Agent Skills Standard and Best Practice for Programming Languages, Frameworks that help our AI Agent follow best practies on frameworks and programming laguages. The licence is MIT.

When your agent uses it

  • Implementing concurrency with goroutines
  • Tasks that involve Async programming

Example prompts

  • “/golang-concurrency”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. Choose primitive — errgroup.Group for parallel tasks with error propagation, channels for pipelines, sync.Mutex for simple shared state.
  2. Bound Concurrency with Semaphore — Cap maximum active goroutines using a buffered channel semaphore
  3. Respect Context Cancellation — Goroutines performing I/O must honor ctx.Done().
  4. Avoid Loop Pointer Capture — Capture iteration variables explicitly before launching goroutines.
  5. Test with race detector — Run go test -race in local dev and CI.

What it can do on your machine

Read from SKILL.md and the folder at commit b529c2d. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • go

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Golang Concurrency loads about 671 tokens when it runs, and up to ~1.2k if it reads all its reference files. Until then it costs about 42 tokens; SKILL.md has 231 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~42
When it runs · the whole SKILL.md, loaded when a task matches
~671
With references · SKILL.md plus every file in references/, read only if the agent opens them
~1.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from HoangNguyen0403/agent-skills-standard at commit b529c2d, republished under its MIT licence (© HoangNguyen0403). 231 words, ~671 tokens.

Download SKILL.mdSave it as .claude/skills/golang-concurrency/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.
name
golang-concurrency
description
Write safe concurrent Go code with goroutines, channels, and context. Use when implementing concurrency with goroutines, channels, or context in Go.

Golang Concurrency

Priority: P0 (CRITICAL)

Principles

  • Share Memory by Communicating: Use channels or synchronization primitives instead of unprotected shared memory.
  • Context Propagation: Always pass ctx to manage cancellation, deadlines, and graceful termination.
  • Throttle Database Load: Reserve goroutines for independent external API calls or CPU work. Avoid unconstrained goroutines hitting databases to prevent connection pool exhaustion.
  • Prevent Leaks: Never start a goroutine without a deterministic shutdown mechanism.
  • Race Detection: Always verify concurrent code with go test -race.

Implementation Workflow

  1. Choose primitive — errgroup.Group for parallel tasks with error propagation, channels for pipelines, sync.Mutex for simple shared state.
  2. Bound Concurrency with Semaphore — Cap maximum active goroutines using a buffered channel semaphore:
    go
    sem := make(chan struct{}, maxWorkers)
for _, task := range tasks {
    task := task // prevent loop pointer capture
    sem <- struct{}{}
    g.Go(func() error {
        defer func() { <-sem }()
        return task.Execute(ctx)
    })
}
  3. Respect Context Cancellation — Goroutines performing I/O must honor ctx.Done().
  4. Avoid Loop Pointer Capture — Capture iteration variables explicitly before launching goroutines.
  5. Test with race detector — Run go test -race in local dev and CI.

See ErrGroup and concurrency patterns and context timeout examples

Anti-Patterns

  • No DB connection spam: avoid spawning unbounded goroutines to query the database in parallel.
  • No goroutine leaks: ensure every goroutine has an exit path via ctx.Done() or channel closure.
  • No loop variable pointer trap: never pass the address of a loop variable (&item) into a concurrent closure.
  • No unbuffered goroutine spawn storms: always cap concurrency with worker pools or semaphores.
  • No bare goroutines: use errgroup or sync.WaitGroup for lifecycle tracking.

References

© HoangNguyen0403, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 3 other files (references) in skills/golang/golang-concurrency of HoangNguyen0403/agent-skills-standard.

  • SKILL.md
  • evals/evals.json
  • references/concurrency-patterns.md
  • references/context-usage.md

Open the folder on GitHubat commit b529c2d

Compare with similar skills

Golang Concurrency next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Golang Concurrency compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Golang Concurrency this skillHoangNguyen0403/agent-skills-standard572—~671Automated safety check: PassMIT
Golang Patternsantoniopaya22/go-rest-template1729 repos~3.5kAutomated safety check: PassNone
Context Handling in fp-goIBM/fp-go2k—~4.2kAutomated safety check: PassApache-2.0
Go Concurrencyinference-gateway/inference-gateway214—~2.3kAutomated safety check: PassApache-2.0
Golang Concurrencyunxed/f42441 repos~2.4kAutomated safety check: PassMIT
Golang Prodavila7/claude-code-templates33k8 repos~1.9kAutomated safety check: PassMIT

Similar skills

  • Golang Patterns

    antoniopaya22/go-rest-template

    Idiomatic Go patterns, best practices, and conventions for building robust, efficient, and maintainable Go applications.

    172 GitHub starsUsed in 9 repos~3.5k tokens
    DevelopmentAuto-check passed

  • Context Handling in fp-go

    IBM/fp-go

    Official

    Covers handling Go's context.Context idiomatically in fp-go code: reading and scoping context through operators, timeouts, cancellation and converting ctx-first functions.

    2k GitHub stars~4.2k tokensUpdated today
    DevelopmentAuto-check passed

  • Go Concurrency

    inference-gateway/inference-gateway

    Idiomatic Go concurrency - sync primitives, channel semantics, the select statement, and the standard channel patterns (cancellation/done-channel, fan-out/fan-in, pipeline, or-done, context…

    214 GitHub stars~2.3k tokensUpdated today
    DevelopmentAuto-check passed

  • Golang Concurrency

    unxed/f4

    Golang concurrency design — goroutine lifecycle and leak prevention, channels and select, channel ownership and direction, sync.Mutex/RWMutex/sync.Map/sync.Once/atomics, errgroup, singleflight…

    244 GitHub starsUsed in 1 repo~2.4k tokens
    DevelopmentAuto-check passed

  • Golang Pro

    davila7/claude-code-templates

    Master Go 1.21+ with modern patterns, advanced concurrency, performance optimization, and production-ready microservices.

    33k GitHub starsUsed in 8 repos~1.9k tokens
    DevelopmentAuto-check passed

  • Golang Concurrency

    context-labs/whip

    Golang concurrency patterns. An agent skill from context-labs/whip.

    1.1k GitHub stars~2.3k tokensUpdated 6 days ago
    DevelopmentAuto-check passed

More from HoangNguyen0403/agent-skills-standard

All 211 skills in this repo

  • Subagent-Driven Development

    HoangNguyen0403/agent-skills-standard

    Runs a multi-task implementation plan by sending each task to a fresh implementer subagent, reviewing it independently, then reviewing the whole branch.

    572 GitHub stars~1.3k tokensUpdated yesterday
    Auto-check passed

  • draw.io Architecture Diagramming

    HoangNguyen0403/agent-skills-standard

    Draws architecture diagrams as editable draw.io files from a JSON spec, with a fixed house style, one C4 level per diagram and evidence-tagged shapes.

    572 GitHub stars~1.3k tokensUpdated yesterday
    Auto-check passed

  • Android Navigation 3 Guide

    HoangNguyen0403/agent-skills-standard

    Implements and migrates to Jetpack Navigation 3 in Compose: NavDisplay, typed route objects, a state-list back stack, deep links, multiple back stacks and dialog scenes.

    572 GitHub stars~687 tokensUpdated yesterday
    Auto-check passed

  • Angular HttpClient Standards

    HoangNguyen0403/agent-skills-standard

    Sets rules for Angular HTTP code: functional interceptors, typed requests, services that own every call, and httpResource for reactive data loading in Angular 17+.

    572 GitHub stars~652 tokensUpdated yesterday
    Auto-check passed

  • Angular Tooling

    HoangNguyen0403/agent-skills-standard

    Angular CLI usage, code generation, build configuration, and bundle optimization.

    572 GitHub stars~743 tokensUpdated yesterday
    Auto-check passed

  • Common Code Review

    HoangNguyen0403/agent-skills-standard

    Conduct high-quality, persona-driven code reviews. An agent skill from HoangNguyen0403/agent-skills-standard.

    572 GitHub stars~772 tokensUpdated yesterday
    Auto-check passed

Works with

Categories

Questions about Golang Concurrency

What does Golang Concurrency do?

Write safe concurrent Go code with goroutines, channels, and context. Golang Concurrency is an agent skill from HoangNguyen0403/agent-skills-standard. Write safe concurrent Go code with goroutines, channels, and context.

When should I use Golang Concurrency?

Golang Concurrency fits situations like: implementing concurrency with goroutines; tasks that involve Async programming.

How do I install Golang Concurrency in Claude Code?

Run `npx skills add HoangNguyen0403/agent-skills-standard --skill golang-concurrency -a claude-code`. Or copy the skill folder (skills/golang/golang-concurrency in HoangNguyen0403/agent-skills-standard) into .claude/skills/golang-concurrency in your project. Claude Code loads it when a task matches its description.

How do I install Golang Concurrency in Codex?

Run `npx skills add HoangNguyen0403/agent-skills-standard --skill golang-concurrency -a codex`. Or copy the skill folder (skills/golang/golang-concurrency in HoangNguyen0403/agent-skills-standard) into .agents/skills/golang-concurrency in your project. Codex loads it when a task matches its description.

Can I use Golang Concurrency in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add HoangNguyen0403/agent-skills-standard --skill golang-concurrency -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/golang-concurrency, .gemini/skills/golang-concurrency, .github/skills/golang-concurrency and .opencode/skills/golang-concurrency in your project.

What does Golang Concurrency need to run?

Going by SKILL.md and its folder, Golang Concurrency needs the command-line tools its instructions call (go).

Does Golang Concurrency access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Golang Concurrency safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Golang Concurrency use?

Golang Concurrency is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Golang Concurrency use?

About 671 tokens (SKILL.md is roughly 2.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 553 tokens, read only when the agent opens those files.

What are the alternatives to Golang Concurrency?

Skills that share tags, products or a category with Golang Concurrency: Golang Patterns (antoniopaya22/go-rest-template, 172 stars), Context Handling in fp-go (IBM/fp-go, 2k stars), Go Concurrency (inference-gateway/inference-gateway, 214 stars) and Golang Concurrency (unxed/f4, 244 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Golang Concurrency?

HoangNguyen0403 (a GitHub user) maintains it in HoangNguyen0403/agent-skills-standard, which has 572 GitHub stars. The repository holds 211 skills in this directory. The repository was last updated on October 9, 2026.

Source: HoangNguyen0403/agent-skills-standard on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.