CI Triage

What it does

Example prompts

• “is anything failing?”
• “failure”
• “/ci-triage”

Workflow steps

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

1. 1List every run of that workflow on that SHA. More than one is the tell.
2. 2If a later run of the same workflow on the same SHA is fully green, the code is fine — the red one was superseded. The commit still shows…
3. 3Check the concurrency group. group: ${{ github.workflow }}-${{ github.ref }} means a schedule run and a push run on main share a group and…

What it can do on your machine

Read from SKILL.md and the folder at commit 568e73a. 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:

  • gh
  • git
  • jq

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md. Its commands use gh and git, 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.

Context cost

CI Triage loads about 1.8k tokens when it runs. Until then it costs about 217 tokens; SKILL.md has 749 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~217

When it runs · the whole SKILL.md, loaded when a task matches

~1.8k

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

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 nubjs/nub at commit 568e73a, republished under its MIT licence (© nubjs). 749 words, ~1,780 tokens.

name

ci-triage

description

Find and diagnose RED CI with the gh CLI — answer "is anything failing?" and "why?" correctly, without being handed a URL. Invoke (via the Skill tool) whenever you need to check whether a branch, commit, or PR is green, whenever someone reports failing CI, before cutting a release, and before claiming any commit is green. THE FAILURE THIS SKILL EXISTS TO PREVENT: `gh run list` reports a RUN-level `conclusion`, and a run whose rollup is `cancelled` can contain a job whose conclusion is `failure` — so filtering runs on `conclusion=="failure"` silently misses real red, and taking the latest run per workflow hides an older failed run on the same SHA. The authoritative instrument is the commit's CHECK-RUNS, which is what the GitHub UI renders. Pairs with `ci-watch` (blocking until a run is terminal) and `ci-adhoc-test` (running a probe on a real OS).

SHA=$(git rev-parse origin/main)   # or a PR head, or any commit
gh api repos/nubjs/nub/commits/$SHA/check-runs --paginate \
  --jq '.check_runs[] | select(.conclusion != "success" and .conclusion != "skipped" and .conclusion != "neutral")
        | "\(.conclusion // .status) | \(.name) | \(.html_url)"'

# WRONG — prints "0" then "1" on a 2-page response. Reads like 0 if you only look at line 1.
gh api repos/nubjs/nub/commits/$SHA/check-runs --paginate --jq '[.check_runs[]|select(.conclusion=="failure")]|length'

# RIGHT — one number for the whole commit.
gh api repos/nubjs/nub/commits/$SHA/check-runs --paginate --slurp \
  | jq '[.[].check_runs[] | select(.conclusion=="failure")] | length'

gh run view <run-id> --json name,status,conclusion,headBranch,headSha,event,createdAt
gh run view <run-id> --json jobs --jq '.jobs[] | "\(.conclusion // .status) | \(.name)"'
gh run view <run-id> --log-failed > /tmp/fail.log 2>&1; echo "EXIT=$?"
sed -e 's/\x1b\[[0-9;]*m//g' /tmp/fail.log | grep -viE '^\s*$' | tail -40

[[ "$smoke" == "success" || "$smoke" == "skipped" ]] || { echo "smoke failed"; exit 1; }

[[ "$smoke" == "success" || "$smoke" == "skipped" || "$smoke" == "cancelled" ]] || { echo "smoke failed"; exit 1; }

© nubjs, 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 .claude/skills/ci-triage of nubjs/nub.

Open the folder on GitHubat commit 568e73a