Pydantic AI
davila7/claude-code-templates
Build production-ready AI agents with PydanticAI — type-safe tool use, structured outputs, dependency injection, and multi-model support.
Design and review predictable Go command-line interfaces with canonical names and flags; explicit inputs and precedence; human, plain, and structured output; safe prompting; stdout and stderr…
Install Go CLI Command Design
$ npx skills add hashgraph-online/awesome-codex-plugins --skill go-cli-command-design -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins go-cli-command-design --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/go-cli-command-design .claude/skills/go-cli-command-design && rm -rf skills-srcUse ~/.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/
Install the "go-cli-command-design" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/go-cli-command-design into .claude/skills/go-cli-command-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-cli-command-design", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/go-cli-command-designType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add hashgraph-online/awesome-codex-plugins --skill go-cli-command-design -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins go-cli-command-design --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/go-cli-command-design .agents/skills/go-cli-command-design && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "go-cli-command-design" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/go-cli-command-design into .agents/skills/go-cli-command-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-cli-command-design", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add hashgraph-online/awesome-codex-plugins --skill go-cli-command-design -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins go-cli-command-design --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/go-cli-command-design .cursor/skills/go-cli-command-design && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "go-cli-command-design" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/go-cli-command-design into .cursor/skills/go-cli-command-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-cli-command-design", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/hashgraph-online/awesome-codex-plugins.git --path plugins/LVTD-LLC/skills/skills/go-cli-command-design--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add hashgraph-online/awesome-codex-plugins --skill go-cli-command-design -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins go-cli-command-design --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/go-cli-command-design .gemini/skills/go-cli-command-design && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "go-cli-command-design" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/go-cli-command-design into .gemini/skills/go-cli-command-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-cli-command-design", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install hashgraph-online/awesome-codex-plugins go-cli-command-designInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add hashgraph-online/awesome-codex-plugins --skill go-cli-command-design -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/go-cli-command-design .github/skills/go-cli-command-design && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "go-cli-command-design" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/go-cli-command-design into .github/skills/go-cli-command-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-cli-command-design", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add hashgraph-online/awesome-codex-plugins --skill go-cli-command-design -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins go-cli-command-design --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/go-cli-command-design .opencode/skills/go-cli-command-design && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "go-cli-command-design" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/go-cli-command-design into .opencode/skills/go-cli-command-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "go-cli-command-design", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
go-cli-command-design- GitHub stars
- 1.2k
- Token cost
- ~864 tokens
- SKILL.md length
- 325 words
- Files
- 8 (incl. references)
- Skills in repo
- 736
- Repo updated
- First seen
- Licence
- MIT
At a glance
Design and review predictable Go command-line interfaces with canonical names and flags; explicit inputs and precedence; human, plain, and structured output; safe prompting; stdout and stderr…
- Works in 8 steps: State the command purpose, invocation… → Assign each input to a flag, operand,… → Define precedence, validation,… → …
- Creating a Go CLI
- SKILL.md covers Core Workflow, Read Next, Guardrails and Source Notes
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Go CLI Command Design is an agent skill from hashgraph-online/awesome-codex-plugins. Design and review predictable Go command-line interfaces with canonical names and flags; explicit inputs and precedence; human, plain, and structured output; safe prompting; stdout and stderr contracts; help; errors; exit codes; cancellation; dependency injection; and platform behavior. Use when creating a Go CLI, changing its public command contract, making command code testable, or reviewing compatibility for people, scripts, AI agents, and CI.
Its SKILL.md is about 860 tokens, which your agent loads only when the skill is triggered. The skill folder holds 11 other files, including reference files (for example `agents/openai.yaml`, `guidelines.md` and `references/command-interface/checklist.md`). Compatibility notes: Codex, Claude Code, and other Agent Skills-compatible clients.
It sits in AI & LLM Engineering, covering Structured output and tool calling and Design patterns. The repository describes itself as: A curated list of awesome OpenAI Codex / ChatGPT plugins, skills, and resources. The 1 Codex Marketplace. See live plugins at: https://hol.org/plugins/best-codex-plugins. The licence is MIT.
When your agent uses it
- Creating a Go CLI
- Changing its public command contract
- Making command code testable
- Reviewing compatibility for people
Example prompts
- “/go-cli-command-design”
Requirements
- Compatibility (from SKILL.md): Codex, Claude Code, and other Agent Skills-compatible clients.
Workflow steps
8 steps, taken from the first numbered list in SKILL.md.
- State the command purpose, invocation syntax, callers, and compatibility promises.
- Assign each input to a flag, operand, stdin, environment, or config source.
- Define precedence, validation, conflicts, defaults, and blocking behavior.
- Reserve stdout for results and requested help; use stderr for diagnostics,
- Return errors from command logic and map exit codes at the process boundary.
- Inject streams, configuration, and effects behind a small testable runner.
- Verify help, invalid usage, operational failures, and supported target behavior.
- Verify noninteractive, color-disabled, canceled, and short-reading pipe behavior.
What it can do on your machine
Read from SKILL.md and the folder at commit 16b4156. 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
Links to these hosts (documentation or services it may open):
pragprog.compkg.go.dev
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.
Compatibility
Codex, Claude Code, and other Agent Skills-compatible clients.
From compatibility in the SKILL.md frontmatter.
Context cost
Go CLI Command Design loads about 864 tokens when it runs, and up to ~6k if it reads all its reference files. Until then it costs about 118 tokens; SKILL.md has 325 words of instructions outside code blocks.
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 hashgraph-online/awesome-codex-plugins at commit 16b4156, republished under its MIT licence (© hashgraph-online). 325 words, ~864 tokens.
Download SKILL.mdSave it as
.claude/skills/go-cli-command-design/SKILL.md (or your agent's skills folder). This skill also uses 7 other files; get the full folder from GitHub.- name
- go-cli-command-design
- description
- Design and review predictable Go command-line interfaces with canonical names and flags; explicit inputs and precedence; human, plain, and structured output; safe prompting; stdout and stderr contracts; help; errors; exit codes; cancellation; dependency injection; and platform behavior. Use when creating a Go CLI, changing its public command contract, making command code testable, or reviewing compatibility for people, scripts, AI agents, and CI.
- compatibility
- Codex, Claude Code, and other Agent Skills-compatible clients.
- license
- MIT
- metadata.version
- 0.4.0
- metadata.displayName
- Go CLI Command Design
- metadata.category
- Go
- metadata.tags
- go,golang,cli,command-design,flags,streams,portability
Go CLI Command Design
Design the command as a public interface before treating it as an implementation. Keep results pipeable, failures diagnosable, and process-global state at the edge.
Core Workflow
- State the command purpose, invocation syntax, callers, and compatibility promises.
- Assign each input to a flag, operand, stdin, environment, or config source.
- Define precedence, validation, conflicts, defaults, and blocking behavior.
- Reserve stdout for results and requested help; use stderr for diagnostics, invalid-usage help, and progress.
- Return errors from command logic and map exit codes at the process boundary.
- Inject streams, configuration, and effects behind a small testable runner.
- Verify help, invalid usage, operational failures, and supported target behavior.
- Verify noninteractive, color-disabled, canceled, and short-reading pipe behavior.
Read Next
| Task | Load |
|---|---|
| Design or change a complete command contract | guidelines.md, workflows/design-command-interface.md |
| Implement flags, streams, environment, or errors | references/command-interface/rules.md, references/command-interface/examples.md |
| Understand the design rationale | references/command-interface/knowledge.md |
| Review an existing command | references/command-interface/checklist.md |
Guardrails
- Prefer a dedicated
flag.FlagSetover package-global flags in reusable code. - Do not read stdin unless the documented invocation requires it.
- Do not call
os.Exitbelow the outer process boundary. - Treat structured output, exact text, and exit codes as APIs when automation relies on them.
- Never prompt, animate, or emit ANSI sequences in structured or noninteractive mode.
- Treat closed downstream pipes as normal pipeline termination when appropriate.
- Cross-compilation does not replace target-level smoke testing.
Source Notes
Guidance is transformed and paraphrased from Ricardo Gerardi, Powerful Command-Line Applications in Go (Pragmatic Bookshelf, 2021), especially Chapters 1-2. Examples are original adaptations.
Modern interaction, cancellation, and output-mode guidance also incorporates transformed material from Marian Montagnino, Building Modern CLI Applications in Go (Packt, 2023), especially Chapters 1, 5, 8, and 10.
Book: https://pragprog.com/titles/rggo/powerful-command-line-applications-in-go/
Modern API details should be verified against https://pkg.go.dev/flag and the current Go documentation before implementation.
Parser grammar and validation guidance also incorporates transformed material from Inanc Gumus, Go by Example: Programmer's Guide to Idiomatic and Testable Programs (Manning, 2025), Chapter 4.
© hashgraph-online, 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 7 other files (references) in plugins/LVTD-LLC/skills/skills/go-cli-command-design of hashgraph-online/awesome-codex-plugins.
- SKILL.md
- agents/openai.yaml
- guidelines.md
- references/command-interface/checklist.md
- references/command-interface/examples.md
- references/command-interface/knowledge.md
- references/command-interface/rules.md
- workflows/design-command-interface.md
Open the folder on GitHubat commit 16b4156
Compare with similar skills
Go CLI Command Design 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Go CLI Command Design this skillhashgraph-online/awesome-codex-plugins | 1.2k | — | ~864 | Automated safety check: Pass | MIT | |
| Pydantic AIdavila7/claude-code-templates | 32k | 4 repos | ~2.9k | Automated safety check: Pass | MIT | |
| Pydanticaimagnus919/agent-skills | 111 | — | ~4k | Automated safety check: Pass | MIT | |
| Planning With Filesjarrodwatts/claude-code-config | 1.1k | 5 repos | ~967 | Automated safety check: Pass | None | |
| Tool Use Data Synthesissunny-glow/Auto-BenchMax | 1.3k | — | ~3.3k | Automated safety check: Pass | None | |
| Agent Harness ConstructionKartikLabhshetwar/mind-mentor | 147 | 7 repos | ~500 | Automated safety check: Pass | Apache-2.0 |
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Prompt Engineering Patterns
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Related
Categories
Questions about Go CLI Command Design
What does Go CLI Command Design do?
Design and review predictable Go command-line interfaces with canonical names and flags; explicit inputs and precedence; human, plain, and structured output; safe prompting; stdout and stderr…. Go CLI Command Design is an agent skill from hashgraph-online/awesome-codex-plugins. Design and review predictable Go command-line interfaces with canonical names and flags; explicit inputs and precedence; human, plain, and structured output; safe prompting; stdout and stderr contracts; help; errors; exit codes; cancellation; dependency injection; and platform behavior.
When should I use Go CLI Command Design?
Go CLI Command Design fits situations like: creating a Go CLI; changing its public command contract; making command code testable; reviewing compatibility for people.
How do I install Go CLI Command Design in Claude Code?
Run `npx skills add hashgraph-online/awesome-codex-plugins --skill go-cli-command-design -a claude-code`. Or copy the skill folder (plugins/LVTD-LLC/skills/skills/go-cli-command-design in hashgraph-online/awesome-codex-plugins) into .claude/skills/go-cli-command-design in your project. Claude Code loads it when a task matches its description.
How do I install Go CLI Command Design in Codex?
Run `npx skills add hashgraph-online/awesome-codex-plugins --skill go-cli-command-design -a codex`. Or copy the skill folder (plugins/LVTD-LLC/skills/skills/go-cli-command-design in hashgraph-online/awesome-codex-plugins) into .agents/skills/go-cli-command-design in your project. Codex loads it when a task matches its description.
Can I use Go CLI Command Design 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 hashgraph-online/awesome-codex-plugins --skill go-cli-command-design -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/go-cli-command-design, .gemini/skills/go-cli-command-design, .github/skills/go-cli-command-design and .opencode/skills/go-cli-command-design in your project.
What does Go CLI Command Design need to run?
SKILL.md names no scripts, command-line tools or credentials: Go CLI Command Design is instructions for the agent only. Compatibility (from SKILL.md): Codex, Claude Code, and other Agent Skills-compatible clients..
Does Go CLI Command Design access the network?
SKILL.md names 2 domains. As links in the text: pragprog.com and pkg.go.dev. This is read from the text; nothing was executed.
Is Go CLI Command Design 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 Go CLI Command Design use?
Go CLI Command Design is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Go CLI Command Design use?
About 864 tokens (SKILL.md is roughly 3.5k 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 5.1k tokens, read only when the agent opens those files.
What are the alternatives to Go CLI Command Design?
Skills that share tags, products or a category with Go CLI Command Design: Pydantic AI (davila7/claude-code-templates, 32k stars), Pydanticai (magnus919/agent-skills, 111 stars), Planning With Files (jarrodwatts/claude-code-config, 1.1k stars) and Tool Use Data Synthesis (sunny-glow/Auto-BenchMax, 1.3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Go CLI Command Design?
hashgraph-online (a GitHub organization) maintains it in hashgraph-online/awesome-codex-plugins, which has 1,232 GitHub stars. The repository holds 736 skills in this directory. The repository was last updated on October 6, 2026.
Source: hashgraph-online/awesome-codex-plugins on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.