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Discover which CLI tools are installed, their versions, and authentication status
Passed 3 of 19 test cases with the skill, and 1 of 19 without it.
2 fixed1 passed either way19 still failing0 broke
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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.
which <name> # returns path if found, exits non-zero if missing
command -v <name> # alternative, works in all POSIX shells
<name> --version # most CLIs support this flag
Use a 5-second timeout to avoid hanging on unresponsive CLIs.
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 |
When doing a broad discovery, check these categories:
gh, git, gitlabtest cases passed, vs 1 / 19 without
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