Agent skill

Modular Go

by PsiACE in PsiACE/skills

Practical guidance for Go package design with minimal public APIs, single-responsibility boundaries, stateless-first flow, one-way state transitions, and orchestration-to-capability separation.

No licenceAuto-check passedDevelopment

Install Modular Go

skills CLI
$ npx skills add PsiACE/skills --skill modular-go -a claude-code

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

GitHub CLI
$ gh skill install PsiACE/skills modular-go --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/PsiACE/skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/modular-go .claude/skills/modular-go && 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
modular-go
GitHub stars
173
Token cost
~768 tokens
SKILL.md length
334 words
Files
7 (incl. references)
Skills in repo
4
Repo updated
First seen
Licence
None found

At a glance

Practical guidance for Go package design with minimal public APIs, single-responsibility boundaries, stateless-first flow, one-way state transitions, and orchestration-to-capability separation.

  • Works in 9 steps: Every export is a promise — keep the… → One package, one responsibility you can… → Depth over breadth — narrow interfaces… → …
  • Reviewing Go architecture
  • SKILL.md covers Purpose and Triggers, Design Principles, Workflow and Topics, plus 1 more section
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Modular Go is an agent skill from PsiACE/skills. Practical guidance for Go package design with minimal public APIs, single-responsibility boundaries, stateless-first flow, one-way state transitions, and orchestration-to-capability separation. Use when creating, refactoring, or reviewing Go architecture, package boundaries, interfaces, handlers, managers, builders, and execution flows.

Its SKILL.md is about 770 tokens, which your agent loads only when the skill is triggered. The skill folder holds 8 other files, including reference files (for example `agents/openai.yaml`, `references/grpc-practices.md` and `references/module-boundary.md`).

It sits in Development, covering Refactoring. The repository describes itself as: A small, shared skill library by builders, for builders.

When your agent uses it

  • Reviewing Go architecture
  • Package boundaries
  • Execution flows

Example prompts

  • “/modular-go”

Workflow steps

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

  1. Every export is a promise — keep the public surface minimal and intentional.
  2. One package, one responsibility you can explain in one sentence.
  3. Depth over breadth — narrow interfaces that hide rich implementations outlast wide, shallow ones.
  4. Stateless by default — treat mutable state as liability that must justify its lifecycle cost.
  5. Split along responsibility seams, not file size — every new boundary must earn its indirection cost.
  6. Orchestration tells the story; capability methods do the work.
  7. Boundaries are translation layers — convert errors, types, and protocols at the edges, not in core logic.
  8. Choose the smallest abstraction that solves the real problem; resist premature generalization.
  9. Lifecycle is a first-class design concern — design shutdown paths alongside startup paths.

What it can do on your machine

Read from SKILL.md and the folder at commit 2265aed. 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

    No scripts in the folder and no shell commands in SKILL.md.

    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

Modular Go loads about 768 tokens when it runs, and up to ~3.1k if it reads all its reference files. Until then it costs about 87 tokens; SKILL.md has 334 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~87
When it runs · the whole SKILL.md, loaded when a task matches
~768
With references · SKILL.md plus every file in references/, read only if the agent opens them
~3.1k

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

Without a licence we can't republish the file, so here is its outline and opening line. It has 334 words (~768 tokens).

“Concise guidance for designing Go packages that stay small, focused, and easy to evolve.”

— opening of SKILL.md by PsiACE
name
modular-go

Read the full SKILL.md on GitHub

Files

SKILL.md and 6 other files (references) in skills/modular-go of PsiACE/skills.

  • SKILL.md
  • agents/openai.yaml
  • references/grpc-practices.md
  • references/module-boundary.md
  • references/orchestration.md
  • references/review-checklist.md
  • references/state-flow.md

Open the folder on GitHubat commit 2265aed

Compare with similar skills

Modular Go 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.

Modular Go compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Modular Go this skillPsiACE/skills173—~768Automated safety check: PassNone
Guidelinesakash-network/node1.1k22 repos~577Automated safety check: PassMIT
Component Refactoringlangflow-ai/langflow156k—~3.5kAutomated safety check: PassMIT
Migrate Core Code to Submodulestinyhumansai/openhuman42k—~2.6kAutomated safety check: PassGPL-3.0
Systematic Code Refactoringluongnv89/claude-howto42k—~3kAutomated safety check: PassMIT
Codexskills-directory/skill-codex1.5k3 repos~1.8kAutomated safety check: PassMIT

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Categories

Questions about Modular Go

What does Modular Go do?

Practical guidance for Go package design with minimal public APIs, single-responsibility boundaries, stateless-first flow, one-way state transitions, and orchestration-to-capability separation. Modular Go is an agent skill from PsiACE/skills. Practical guidance for Go package design with minimal public APIs, single-responsibility boundaries, stateless-first flow, one-way state transitions, and orchestration-to-capability separation.

When should I use Modular Go?

Modular Go fits situations like: reviewing Go architecture; package boundaries; execution flows.

How do I install Modular Go in Claude Code?

Run `npx skills add PsiACE/skills --skill modular-go -a claude-code`. Or copy the skill folder (skills/modular-go in PsiACE/skills) into .claude/skills/modular-go in your project. Claude Code loads it when a task matches its description.

How do I install Modular Go in Codex?

Run `npx skills add PsiACE/skills --skill modular-go -a codex`. Or copy the skill folder (skills/modular-go in PsiACE/skills) into .agents/skills/modular-go in your project. Codex loads it when a task matches its description.

Can I use Modular Go 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 PsiACE/skills --skill modular-go -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/modular-go, .gemini/skills/modular-go, .github/skills/modular-go and .opencode/skills/modular-go in your project.

What does Modular Go need to run?

SKILL.md names no scripts, command-line tools or credentials: Modular Go is instructions for the agent only.

Does Modular Go 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 Modular Go 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 Modular Go use?

No licence was found for Modular Go or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Modular Go use?

About 768 tokens (SKILL.md is roughly 3.1k 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 2.3k tokens, read only when the agent opens those files.

What are the alternatives to Modular Go?

Skills that share tags, products or a category with Modular Go: Guidelines (akash-network/node, 1.1k stars), Component Refactoring (langflow-ai/langflow, 156k stars), Migrate Core Code to Submodules (tinyhumansai/openhuman, 42k stars) and Systematic Code Refactoring (luongnv89/claude-howto, 42k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Modular Go?

PsiACE (a GitHub user) maintains it in PsiACE/skills, which has 173 GitHub stars. The repository holds 4 skills in this directory. The repository was last updated on September 14, 2026.

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