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Agent skill

Kc Preflight

by imran31415 in imran31415/kube-coder

Run kube-coder's full CI suite locally before pushing — helm lint + unit tests, server.py tests, dashboard + controller SPA builds + vitest, and shell syntax checks.

MITAuto-check: notesTesting & QA

Install Kc Preflight

skills CLI
$ npx skills add imran31415/kube-coder --skill kc-preflight -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install imran31415/kube-coder kc-preflight --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/imran31415/kube-coder.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/kc-preflight .claude/skills/kc-preflight && rm -rf skills-src

Use ~/.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/

Facts

Skill name
kc-preflight
GitHub stars
388
Token cost
~1k tokens
SKILL.md length
297 words
Files
1
Skills in repo
8
Repo updated
First seen
Licence
MIT

At a glance

Run kube-coder's full CI suite locally before pushing — helm lint + unit tests, server.py tests, dashboard + controller SPA builds + vitest, and shell syntax checks.

  • Tasks that involve Unit testing
  • SKILL.md covers Prereqs (install once,…, helm — lint + template + unit…, python — server.py unit +… and web — SPA typecheck, build,…, plus 3 more sections
  • Calls helm, yarn and bash; reaches get.helm.sh and github.com
  • Tasks that involve Container orchestration

What it does

Kc Preflight is an agent skill from imran31415/kube-coder. Run kube-coder's full CI suite locally before pushing — helm lint + unit tests, server.py tests, dashboard + controller SPA builds + vitest, and shell syntax checks. Use before opening or updating a PR so CI is green on the first push.

Its SKILL.md is about 1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Testing & QA, covering Unit testing, Container orchestration and Linting and formatting. It works with Vitest. The repository describes itself as: helm chart for a isolated dev coding environment pod in kubernetes. The licence is MIT.

When your agent uses it

  • Tasks that involve Unit testing
  • Tasks that involve Container orchestration
  • Tasks that involve Linting and formatting

Example prompts

  • “/kc-preflight”

Requirements

  • Python 3
  • Docker
  • Pre-approved tools (allowed-tools): Bash, Read

What it can do on your machine

Read from SKILL.md and the folder at commit fc0b886. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Bash
    • Read

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • helm
    • yarn
    • bash
    • curl
    • make
    • tsc

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

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • get.helm.sh
    • github.com

    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

Kc Preflight loads about 1k tokens when it runs. Until then it costs about 62 tokens; SKILL.md has 297 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~62
When it runs · the whole SKILL.md, loaded when a task matches
~1k

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: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

  • NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
    allowed-tools: Bash, Read

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 imran31415/kube-coder at commit fc0b886, republished under its MIT licence (© imran31415). 297 words, ~1,047 tokens.

Download SKILL.mdSave it as .claude/skills/kc-preflight/SKILL.md (or your agent's skills folder).
name
kc-preflight
description
Run kube-coder's full CI suite locally before pushing — helm lint + unit tests, server.py tests, dashboard + controller SPA builds + vitest, and shell syntax checks. Use before opening or updating a PR so CI is green on the first push.
allowed-tools
Bash, Read
user-invocable
true
argument-hint
[all | web | python | helm | shell] (default: all)

kube-coder preflight (run CI locally)

Mirrors .github/workflows/ci.yml so you catch failures before pushing instead of waiting on a CI round-trip.

Run kc-scope-pr first. This skill runs whole suites; that one tells you which suites your change actually reaches, and what it left untested. A green preflight over a suite that never touches your diff is not evidence. Run the subset named by $ARGUMENTS (default all). Report a concise PASS/FAIL summary per section at the end.

Run from the repo root (/home/dev/kube-coder).

Prereqs (install once, idempotent)

bash
export PATH="$HOME/.local/bin:$PATH"
# helm (if missing)
command -v helm >/dev/null || {
  cd /tmp && curl -fsSL https://get.helm.sh/helm-v3.14.4-linux-amd64.tar.gz | tar xz \
    && install -m755 linux-amd64/helm ~/.local/bin/helm; cd -; }
# helm-unittest plugin (if missing)
helm plugin list 2>/dev/null | grep -q unittest \
  || helm plugin install https://github.com/helm-unittest/helm-unittest.git --version v0.5.2

helm — lint + template + unit tests

bash
export PATH="$HOME/.local/bin:$PATH"
helm lint charts/workspace/ -f charts/workspace/tests/test-values.yaml
helm template test-ws charts/workspace/ -f charts/workspace/tests/test-values.yaml > /dev/null
helm unittest charts/workspace/
# controller chart too, if you touched it:
# helm lint charts/workspace-controller/ -f charts/workspace-controller/tests/test-values.yaml
# helm unittest charts/workspace-controller/

python — server.py unit + integration tests

bash
make python-tests
# Prefer the make target: it points KC_FEED_DIR / KC_PUSH_DIR / KC_PROVIDER_KEYS_FILE
# at a temp dir, so a test can't write this workspace's live Feed, page its phone
# (#685), or read/overwrite the API keys you set in Settings. By hand:
# t=$(mktemp -d) && cd charts/workspace && KC_FEED_DIR=$t/feed KC_PUSH_DIR=$t/push \
#   KC_PROVIDER_KEYS_FILE=$t/provider-keys.json \
#   python3 -m unittest discover -s tests -p '*_test.py'

web — SPA typecheck, build, and vitest (BOTH apps)

There are two SPAs with separate lockfiles and CI jobs: the dashboard (charts/workspace/web) and the controller (charts/workspace-controller/web). CI runs each build (which is tsc --noEmit && vite build) then vitest — mirror both:

bash
for dir in charts/workspace/web charts/workspace-controller/web; do
  yarn --cwd "$dir" install --frozen-lockfile   # first run only
  yarn --cwd "$dir" build      # tsc + vite
  yarn --cwd "$dir" test       # vitest run
done

Ignore the DOMException [NetworkError] … /oauth/terminal/ noise in TerminalPane tests — happy-dom tries to actually fetch iframe srcs; it's harmless and pre-existing. Only the final Test Files … / Tests … tally matters.

shell — validate the entrypoint scripts

start.sh ships via {{ tpl (.Files.Get "start.sh") . }}, so a syntax error there breaks every pod. Always:

bash
bash -n charts/workspace/start.sh

For the SSH sidecar (embedded in YAML), rendering it through helm already covers syntax; helm template … | grep to eyeball the script if you edited it.

What CI runs that this does NOT

  • Docker Build Smoke Test — a full image build (~2 min). Usually not worth reproducing locally; rely on CI. If you changed the Dockerfile, do build it.
  • Trivy / Security Scanning — image + dependency CVE scans. CI-only.

Call those out in your summary so the user knows what's still pending after push.

Summary format

End with a table:

SectionResult
helm lint/template/unittest✅ / ❌
server.py tests✅ / ❌
dashboard SPA build + vitest✅ / ❌
controller SPA build + vitest✅ / ❌
shell bash -n✅ / ❌

If everything passes, tell the user it's safe to run kc-ship-pr.

© imran31415, 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/kc-preflight of imran31415/kube-coder.

Open the folder on GitHubat commit fc0b886

Compare with similar skills

Kc Preflight 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.

Kc Preflight compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Kc Preflight this skillimran31415/kube-coder388—~1kAutomated safety check: NotesMIT
Ha Frontend Testinghome-assistant/frontend5.7k—~1.7kAutomated safety check: PassApache-2.0
Eslint Vitest Rule Testerantfu-collective/eslint-vitest-rule-tester142—~1.3kAutomated safety check: PassMIT
Run Testsartcc/freelingo162—~976Automated safety check: PassAGPL-3.0
Backend Testingbiersoeckli/QuickStack361—~670Automated safety check: PassGPL-3.0
Validatejuliepy/AI-Engineer-from-scrach436—~500Automated safety check: PassNone

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More from imran31415/kube-coder

All 8 skills in this repo

  • Kc Entrypoint Change

    imran31415/kube-coder

    Safely edit the workspace pod's boot scripts (start.sh, the entrypoint/ssh-server configmaps) in kube-coder.

    388 GitHub stars~1.3k tokensUpdated yesterday
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  • Kc Issue

    imran31415/kube-coder

    Spin up an isolated agent to work a GitHub issue of kube-coder or any other repo checked out in the workspace.

    388 GitHub stars~1.9k tokensUpdated yesterday
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  • Kc Screenshot

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    388 GitHub stars~870 tokensUpdated yesterday
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  • Kc Ship PR

    imran31415/kube-coder

    Commit local changes and open a pull request against kube-coder from inside a workspace pod.

    388 GitHub stars~2k tokensUpdated yesterday
    Auto-check: notes

  • Remote Task

    imran31415/kube-coder

    Launch a Claude task on a remote kube-coder workspace, check task status, or attach to a running session.

    388 GitHub stars~1.3k tokensUpdated yesterday
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  • Kc Scope PR

    imran31415/kube-coder

    Scope a kube-coder change before you open or update a PR — what the diff actually touches, which tests reach it, what the change made worse, and what is left untested.

    388 GitHub stars~1.2k tokensUpdated yesterday
    Auto-check: notes

Works with

Categories

Questions about Kc Preflight

What does Kc Preflight do?

Run kube-coder's full CI suite locally before pushing — helm lint + unit tests, server.py tests, dashboard + controller SPA builds + vitest, and shell syntax checks. Kc Preflight is an agent skill from imran31415/kube-coder.py tests, dashboard + controller SPA builds + vitest, and shell syntax checks.

When should I use Kc Preflight?

Kc Preflight fits situations like: tasks that involve Unit testing; tasks that involve Container orchestration; tasks that involve Linting and formatting.

How do I install Kc Preflight in Claude Code?

Run `npx skills add imran31415/kube-coder --skill kc-preflight -a claude-code`. Or copy the skill folder (.claude/skills/kc-preflight in imran31415/kube-coder) into .claude/skills/kc-preflight in your project. Claude Code loads it when a task matches its description.

How do I install Kc Preflight in Codex?

Run `npx skills add imran31415/kube-coder --skill kc-preflight -a codex`. Or copy the skill folder (.claude/skills/kc-preflight in imran31415/kube-coder) into .agents/skills/kc-preflight in your project. Codex loads it when a task matches its description.

Can I use Kc Preflight 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 imran31415/kube-coder --skill kc-preflight -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/kc-preflight, .gemini/skills/kc-preflight, .github/skills/kc-preflight and .opencode/skills/kc-preflight in your project.

What does Kc Preflight need to run?

Going by SKILL.md and its folder, Kc Preflight needs the command-line tools its instructions call (helm, yarn, bash, curl, make and tsc). Our summary lists: Python 3; Docker. Its frontmatter pre-approves these tools: Bash, Read.

Does Kc Preflight access the network?

SKILL.md names 2 domains. In commands or code: get.helm.sh and github.com; the agent is likely to contact these when it follows the instructions. This is read from the text; nothing was executed.

Is Kc Preflight safe to install?

Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.

What licence does Kc Preflight use?

Kc Preflight 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 Kc Preflight use?

About 1k tokens (SKILL.md is roughly 4.2k 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 Kc Preflight?

Skills that share tags, products or a category with Kc Preflight: Ha Frontend Testing (home-assistant/frontend, 5.7k stars), Eslint Vitest Rule Tester (antfu-collective/eslint-vitest-rule-tester, 142 stars), Run Tests (artcc/freelingo, 162 stars) and Backend Testing (biersoeckli/QuickStack, 361 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Kc Preflight?

imran31415 (a GitHub user) maintains it in imran31415/kube-coder, which has 388 GitHub stars. The repository holds 8 skills in this directory. The repository was last updated on October 8, 2026.

Source: imran31415/kube-coder on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.