Frugal
yuanboP/frugal
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Discover which CLI tools are installed, their versions, and authentication status
Install CLI Discover
$ npx skills add vellum-ai/vellum-assistant --skill cli-discover -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install vellum-ai/vellum-assistant cli-discover --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/vellum-ai/vellum-assistant.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/cli-discover .claude/skills/cli-discover && 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 "cli-discover" agent skill from https://github.com/vellum-ai/vellum-assistant/tree/main/skills/cli-discover into .claude/skills/cli-discover/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cli-discover", 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/vellum-ai/vellum-assistant/tree/main/skills/cli-discoverType 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 vellum-ai/vellum-assistant --skill cli-discover -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install vellum-ai/vellum-assistant cli-discover --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/vellum-ai/vellum-assistant.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/cli-discover .agents/skills/cli-discover && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "cli-discover" agent skill from https://github.com/vellum-ai/vellum-assistant/tree/main/skills/cli-discover into .agents/skills/cli-discover/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cli-discover", 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 vellum-ai/vellum-assistant --skill cli-discover -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install vellum-ai/vellum-assistant cli-discover --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/vellum-ai/vellum-assistant.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/cli-discover .cursor/skills/cli-discover && 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 "cli-discover" agent skill from https://github.com/vellum-ai/vellum-assistant/tree/main/skills/cli-discover into .cursor/skills/cli-discover/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cli-discover", 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/vellum-ai/vellum-assistant.git --path skills/cli-discover--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 vellum-ai/vellum-assistant --skill cli-discover -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install vellum-ai/vellum-assistant cli-discover --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/vellum-ai/vellum-assistant.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/cli-discover .gemini/skills/cli-discover && 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 "cli-discover" agent skill from https://github.com/vellum-ai/vellum-assistant/tree/main/skills/cli-discover into .gemini/skills/cli-discover/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cli-discover", 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 vellum-ai/vellum-assistant cli-discoverInstalls 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 vellum-ai/vellum-assistant --skill cli-discover -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/vellum-ai/vellum-assistant.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/cli-discover .github/skills/cli-discover && 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 "cli-discover" agent skill from https://github.com/vellum-ai/vellum-assistant/tree/main/skills/cli-discover into .github/skills/cli-discover/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cli-discover", 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 vellum-ai/vellum-assistant --skill cli-discover -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install vellum-ai/vellum-assistant cli-discover --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/vellum-ai/vellum-assistant.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/cli-discover .opencode/skills/cli-discover && 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 "cli-discover" agent skill from https://github.com/vellum-ai/vellum-assistant/tree/main/skills/cli-discover into .opencode/skills/cli-discover/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cli-discover", 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
cli-discover- GitHub stars
- 1.4k
- Token cost
- ~658 tokens
- SKILL.md length
- 170 words
- Files
- 1
- Skills in repo
- 108
- Repo updated
- First seen
- Licence
- MIT
At a glance
Discover which CLI tools are installed, their versions, and authentication status
- DevOps & Cloud work in your project
- SKILL.md covers Checking if a CLI exists, Getting version info, Auth-check commands and Common CLIs worth checking, plus 1 more section
- Calls gh, aws and gcloud
What it does
CLI Discover is an agent skill from vellum-ai/vellum-assistant. Discover which CLI tools are installed, their versions, and authentication status
Its SKILL.md is about 660 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts. Compatibility notes: Designed for Vellum personal assistants
It sits in DevOps & Cloud. It works with Amazon Web Services, Google Cloud, Netlify and Vercel. The repository describes itself as: An AI Assistant that’s easy to setup, does your work 24/7, knows your preferences and gets better over time. The licence is MIT.
When your agent uses it
- DevOps & Cloud work in your project
Example prompts
- “/cli-discover”
Requirements
- Docker
- Compatibility (from SKILL.md): Designed for Vellum personal assistants
What it can do on your machine
Read from SKILL.md and the folder at commit c92ead1. 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:
ghawsgcloudazvercelnetlifyflyherokurailway
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use gh, aws, gcloud, az, vercel and netlify, which can reach the network depending on how they are called.
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
Designed for Vellum personal assistants
From compatibility in the SKILL.md frontmatter.
Context cost
CLI Discover loads about 658 tokens when it runs. Until then it costs about 24 tokens; SKILL.md has 170 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 vellum-ai/vellum-assistant at commit c92ead1, republished under its MIT licence (© vellum-ai). 170 words, ~658 tokens.
Download SKILL.mdSave it as
.claude/skills/cli-discover/SKILL.md (or your agent's skills folder).- name
- cli-discover
- description
- Discover which CLI tools are installed, their versions, and authentication status
- compatibility
- Designed for Vellum personal assistants
- metadata.emoji
- 🔍
CLI Discovery
When you need to discover what CLI tools are available on the system, use host_bash to check directly. Do not use sandboxed bash for discovery - it may not see host-installed CLIs or auth state, leading to false negatives.
Checking if a CLI exists
which <name> # returns path if found, exits non-zero if missing
command -v <name> # alternative, works in all POSIX shellsGetting version info
<name> --version # most CLIs support this flagUse a 5-second timeout to avoid hanging on unresponsive CLIs.
Auth-check commands
For CLIs that support authentication, check whether the user is logged in:
| CLI | Auth check command |
|---|---|
gh | gh auth status |
aws | aws sts get-caller-identity |
gcloud | gcloud auth list --filter=status:ACTIVE --format=value(account) |
az | az account show |
vercel | vercel whoami |
netlify | netlify status |
fly | fly auth whoami |
heroku | heroku auth:whoami |
railway | railway whoami |
Common CLIs worth checking
When doing a broad discovery, check these categories:
- Version control & code hosting:
gh,git,gitlab - Project management:
linear,jira - Communication:
slack - Cloud providers:
aws,gcloud,az - Containers & infra:
docker,kubectl,terraform - Runtimes & package managers:
node,bun,deno,python3,pip3 - HTTP clients:
curl,httpie - Hosting & deploy:
vercel,netlify,fly,heroku,railway
Output format
Report findings in markdown:
## Available CLIs
- **git** (/usr/bin/git) - git version 2.x.x
- **gh** (/usr/bin/gh) - gh version 2.x.x [authenticated: user@example.com]
- **bun** (~/.bun/bin/bun) - 1.x.x
## Not found: jira, linear, slack© vellum-ai, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in skills/cli-discover of vellum-ai/vellum-assistant.
Open the folder on GitHubat commit c92ead1
Compare with similar skills
CLI Discover 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 |
|---|---|---|---|---|---|---|
| CLI Discover this skillvellum-ai/vellum-assistant | 1.4k | — | ~658 | Automated safety check: Pass | MIT | |
| FrugalyuanboP/frugal | 198 | — | ~2.1k | Automated safety check: Pass | MIT | |
| Vercel Migration Deep Divejeremylongshore/tons-of-skills-marketplace | 2.8k | — | ~2k | Automated safety check: Notes | MIT | |
| Gamma Deploy Integrationjeremylongshore/tons-of-skills-marketplace | 2.8k | — | ~1.3k | Automated safety check: Pass | MIT | |
| Langfuse Deploy Integrationjeremylongshore/tons-of-skills-marketplace | 2.8k | — | ~1.9k | Automated safety check: Pass | MIT | |
| Discover Infrarand/cc-polymath | 181 | — | ~783 | Automated safety check: Pass | MIT |
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Related
Categories
Questions about CLI Discover
What does CLI Discover do?
Discover which CLI tools are installed, their versions, and authentication status. CLI Discover is an agent skill from vellum-ai/vellum-assistant.
When should I use CLI Discover?
CLI Discover fits situations like: devOps & Cloud work in your project.
How do I install CLI Discover in Claude Code?
Run `npx skills add vellum-ai/vellum-assistant --skill cli-discover -a claude-code`. Or copy the skill folder (skills/cli-discover in vellum-ai/vellum-assistant) into .claude/skills/cli-discover in your project. Claude Code loads it when a task matches its description.
How do I install CLI Discover in Codex?
Run `npx skills add vellum-ai/vellum-assistant --skill cli-discover -a codex`. Or copy the skill folder (skills/cli-discover in vellum-ai/vellum-assistant) into .agents/skills/cli-discover in your project. Codex loads it when a task matches its description.
Can I use CLI Discover 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 vellum-ai/vellum-assistant --skill cli-discover -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/cli-discover, .gemini/skills/cli-discover, .github/skills/cli-discover and .opencode/skills/cli-discover in your project.
What does CLI Discover need to run?
Going by SKILL.md and its folder, CLI Discover needs the command-line tools its instructions call (gh, aws, gcloud, az, vercel and netlify). Our summary lists: Docker. Compatibility (from SKILL.md): Designed for Vellum personal assistants.
Does CLI Discover access the network?
SKILL.md contains no URLs. Its commands use gh, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is CLI Discover 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 CLI Discover use?
CLI Discover 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 CLI Discover use?
About 658 tokens (SKILL.md is roughly 2.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to CLI Discover?
Skills that share tags, products or a category with CLI Discover: Frugal (yuanboP/frugal, 198 stars), Vercel Migration Deep Dive (jeremylongshore/tons-of-skills-marketplace, 2.8k stars), Gamma Deploy Integration (jeremylongshore/tons-of-skills-marketplace, 2.8k stars) and Langfuse Deploy Integration (jeremylongshore/tons-of-skills-marketplace, 2.8k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains CLI Discover?
vellum-ai (a GitHub organization) maintains it in vellum-ai/vellum-assistant, which has 1,397 GitHub stars. The repository holds 108 skills in this directory. The repository was last updated on October 7, 2026.
Source: vellum-ai/vellum-assistant on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.