# CLI Discover

> Discover which CLI tools are installed, their versions, and authentication status

- Skill: `aibot88/cli-discover` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add aibot88/cli-discover`
- Raw SKILL.md: https://api.skillmd.com/api/skills/aibot88/cli-discover/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: aibot88 (https://skillmd.com/u/aibot88)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/aibot88/cli-discover

---


# 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

```bash
which <name>        # returns path if found, exits non-zero if missing
command -v <name>   # alternative, works in all POSIX shells
```

## Getting version info

```bash
<name> --version    # most CLIs support this flag
```

Use 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:

```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
```