Kubeshark KFL2 Filter Reference
kubeshark/kubeshark
Syntax reference for KFL2, the CEL-based display filter language used to search Kubernetes network traffic captured by Kubeshark, loaded before any filter is written.
Health check endpoints for liveness, readiness, dependency monitoring.
Install Health Check Endpoints
$ npx skills add secondsky/claude-skills --skill health-check-endpoints -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install secondsky/claude-skills health-check-endpoints --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/secondsky/claude-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/health-check-endpoints/skills/health-check-endpoints .claude/skills/health-check-endpoints && 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 "health-check-endpoints" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/health-check-endpoints/skills/health-check-endpoints into .claude/skills/health-check-endpoints/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "health-check-endpoints", 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/secondsky/claude-skills/tree/main/plugins/health-check-endpoints/skills/health-check-endpointsType 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 secondsky/claude-skills --skill health-check-endpoints -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install secondsky/claude-skills health-check-endpoints --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/secondsky/claude-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/health-check-endpoints/skills/health-check-endpoints .agents/skills/health-check-endpoints && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "health-check-endpoints" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/health-check-endpoints/skills/health-check-endpoints into .agents/skills/health-check-endpoints/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "health-check-endpoints", 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 secondsky/claude-skills --skill health-check-endpoints -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install secondsky/claude-skills health-check-endpoints --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/secondsky/claude-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/health-check-endpoints/skills/health-check-endpoints .cursor/skills/health-check-endpoints && 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 "health-check-endpoints" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/health-check-endpoints/skills/health-check-endpoints into .cursor/skills/health-check-endpoints/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "health-check-endpoints", 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/secondsky/claude-skills.git --path plugins/health-check-endpoints/skills/health-check-endpoints--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 secondsky/claude-skills --skill health-check-endpoints -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install secondsky/claude-skills health-check-endpoints --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/secondsky/claude-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/health-check-endpoints/skills/health-check-endpoints .gemini/skills/health-check-endpoints && 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 "health-check-endpoints" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/health-check-endpoints/skills/health-check-endpoints into .gemini/skills/health-check-endpoints/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "health-check-endpoints", 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 secondsky/claude-skills health-check-endpointsInstalls 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 secondsky/claude-skills --skill health-check-endpoints -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/secondsky/claude-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/health-check-endpoints/skills/health-check-endpoints .github/skills/health-check-endpoints && 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 "health-check-endpoints" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/health-check-endpoints/skills/health-check-endpoints into .github/skills/health-check-endpoints/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "health-check-endpoints", 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 secondsky/claude-skills --skill health-check-endpoints -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install secondsky/claude-skills health-check-endpoints --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/secondsky/claude-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/health-check-endpoints/skills/health-check-endpoints .opencode/skills/health-check-endpoints && 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 "health-check-endpoints" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/health-check-endpoints/skills/health-check-endpoints into .opencode/skills/health-check-endpoints/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "health-check-endpoints", 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
health-check-endpoints- GitHub stars
- 227
- Token cost
- ~659 tokens
- SKILL.md length
- 118 words
- Files
- 2 (incl. references)
- Skills in repo
- 168
- Repo updated
- First seen
- Licence
- MIT
At a glance
Health check endpoints for liveness, readiness, dependency monitoring.
- Encountering probe failures
- SKILL.md covers Probe Types, Implementation (Express), Kubernetes Configuration and Best Practices, plus 2 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Dependency checks
What it does
Health Check Endpoints is an agent skill from secondsky/claude-skills. Health check endpoints for liveness, readiness, dependency monitoring. Use for Kubernetes, load balancers, auto-scaling, or encountering probe failures, startup delays, dependency checks, timeout configuration errors.
Its SKILL.md is about 660 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/implementations.md`).
It sits in DevOps & Cloud, covering Container orchestration and Cloud networking. It works with Kubernetes. The repository describes itself as: Production-ready skills for Claude Code CLI - Cloudflare, React, Tailwind v4, and AI integrations. The licence is MIT.
When your agent uses it
- Encountering probe failures
- Dependency checks
- Timeout configuration errors
Example prompts
- “/health-check-endpoints”
Requirements
- Python 3
What it can do on your machine
Read from SKILL.md and the folder at commit 8837836. 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
No scripts in the folder and no shell commands in SKILL.md (its code samples are javascript and yaml).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
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
Health Check Endpoints loads about 659 tokens when it runs, and up to ~2.3k if it reads all its reference files. Until then it costs about 60 tokens; SKILL.md has 118 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 secondsky/claude-skills at commit 8837836, republished under its MIT licence (© secondsky). 118 words, ~659 tokens.
Download SKILL.mdSave it as
.claude/skills/health-check-endpoints/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- health-check-endpoints
- description
- Health check endpoints for liveness, readiness, dependency monitoring. Use for Kubernetes, load balancers, auto-scaling, or encountering probe failures, startup delays, dependency checks, timeout configuration errors.
- license
- MIT
Health Check Endpoints
Implement health checks for monitoring service availability and readiness.
Probe Types
| Probe | Purpose | Failure Action |
|---|---|---|
| Liveness | Is process alive? | Restart container |
| Readiness | Can handle traffic? | Remove from LB |
| Startup | Has app started? | Delay other probes |
| Deep | All deps healthy? | Trigger alerts |
Implementation (Express)
class HealthChecker {
async checkDatabase() {
const start = Date.now();
try {
await db.query('SELECT 1');
return { status: 'healthy', latency: Date.now() - start };
} catch (err) {
return { status: 'unhealthy', error: String(err?.message || err) };
}
}
async checkRedis() {
try {
await redis.ping();
return { status: 'healthy' };
} catch (err) {
return { status: 'unhealthy', error: err.message };
}
}
async getReadiness() {
const checks = await Promise.all([
this.checkDatabase(),
this.checkRedis()
]);
const healthy = checks.every(c => c.status === 'healthy');
return { healthy, checks };
}
}
// Liveness - lightweight
app.get('/health/live', (req, res) => {
res.json({ status: 'ok', timestamp: new Date().toISOString() });
});
// Readiness - check dependencies
app.get('/health/ready', async (req, res) => {
const health = await healthChecker.getReadiness();
res.status(health.healthy ? 200 : 503).json(health);
});Kubernetes Configuration
livenessProbe:
httpGet:
path: /health/live
port: 3000
initialDelaySeconds: 15
periodSeconds: 10
failureThreshold: 3
readinessProbe:
httpGet:
path: /health/ready
port: 3000
initialDelaySeconds: 5
periodSeconds: 10Best Practices
- Keep liveness checks minimal (no external deps)
- Check only critical systems in readiness
- Return 200 for healthy, 503 for unhealthy
- Set reasonable timeouts to prevent cascading failures
- Include response time metrics
Additional Implementations
See references/implementations.md for:
- Python Flask complete health checker
- Java Spring Boot Actuator
- Full Kubernetes deployment config
Never Do
- Make liveness depend on external services
- Return 200 when dependencies are down
- Skip dependency checks in readiness
© secondsky, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file (references) in plugins/health-check-endpoints/skills/health-check-endpoints of secondsky/claude-skills.
- SKILL.md
- references/implementations.md
Open the folder on GitHubat commit 8837836
Compare with similar skills
Health Check Endpoints 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 |
|---|---|---|---|---|---|---|
| Health Check Endpoints this skillsecondsky/claude-skills | 227 | — | ~659 | Automated safety check: Pass | MIT | |
| Kubeshark KFL2 Filter Referencekubeshark/kubeshark | 12k | — | ~3.6k | Automated safety check: Pass | Apache-2.0 | |
| Nginx To Higress Migrationhigress-group/higress | 9.5k | — | ~3.9k | Automated safety check: Pass | Apache-2.0 | |
| NGINX Ingress Controller Feature Checklistsnginx/kubernetes-ingress | 5.1k | — | ~1.4k | Automated safety check: Pass | Apache-2.0 | |
| NGINX Ingress Policy CRD Guidenginx/kubernetes-ingress | 5.1k | — | ~2k | Automated safety check: Pass | Apache-2.0 | |
| Aks Deployment Skilltimothywarner/chatgptclass | 143 | — | ~916 | Automated safety check: Pass | Custom licence |
Similar skills
Nginx To Higress Migration
higress-group/higress
Migrate from ingress-nginx to Higress in Kubernetes environments.
NGINX Ingress Controller Feature Checklists
nginx/kubernetes-ingress
Gives step-by-step checklists for adding Ingress annotations, VirtualServer fields and Helm values to the NGINX Kubernetes Ingress Controller, with common gotchas.
NGINX Ingress Policy CRD Guide
nginx/kubernetes-ingress
Step-by-step checklist for adding a new Policy CRD type to the NGINX Ingress Controller, from the Go types and validation to config generation and templates.
Aks Deployment Skill
timothywarner/chatgptclass
Deploy and operate workloads on Azure Kubernetes Service (AKS) the safe way.
KubeSphere Gateway Management
kubesphere/kubesphere
Installs, uninstalls, checks and troubleshoots the KubeSphere Gateway extension built on ingress-nginx, including gateways stuck in bad states and Helm or pod failures.
More from secondsky/claude-skills
All 168 skills in this repoAuto Animate
secondsky/claude-skills
AutoAnimate (@formkit/auto-animate) zero-config animations for React.
Base UI React
secondsky/claude-skills
MUI Base UI unstyled React components with Floating UI. An agent skill from secondsky/claude-skills.
Cloudflare Images
secondsky/claude-skills
This skill should be used when the user asks to "upload images to Cloudflare", "implement direct creator upload", "configure image transformations", "optimize WebP/AVIF", "create image variants"…
Cloudflare Nextjs
secondsky/claude-skills
Deploy Next.js to Cloudflare Workers via the OpenNext adapter (@opennextjs/cloudflare).
Cloudflare Sandbox
secondsky/claude-skills
Cloudflare Sandboxes SDK for secure code execution in Linux containers at edge.
GitHub Project Automation
secondsky/claude-skills
GitHub repository automation (CI/CD, issue templates, Dependabot, CodeQL).
Related
Works with
Categories
Questions about Health Check Endpoints
What does Health Check Endpoints do?
Health check endpoints for liveness, readiness, dependency monitoring. Health Check Endpoints is an agent skill from secondsky/claude-skills. Health check endpoints for liveness, readiness, dependency monitoring.
When should I use Health Check Endpoints?
Health Check Endpoints fits situations like: encountering probe failures; dependency checks; timeout configuration errors.
How do I install Health Check Endpoints in Claude Code?
Run `npx skills add secondsky/claude-skills --skill health-check-endpoints -a claude-code`. Or copy the skill folder (plugins/health-check-endpoints/skills/health-check-endpoints in secondsky/claude-skills) into .claude/skills/health-check-endpoints in your project. Claude Code loads it when a task matches its description.
How do I install Health Check Endpoints in Codex?
Run `npx skills add secondsky/claude-skills --skill health-check-endpoints -a codex`. Or copy the skill folder (plugins/health-check-endpoints/skills/health-check-endpoints in secondsky/claude-skills) into .agents/skills/health-check-endpoints in your project. Codex loads it when a task matches its description.
Can I use Health Check Endpoints 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 secondsky/claude-skills --skill health-check-endpoints -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/health-check-endpoints, .gemini/skills/health-check-endpoints, .github/skills/health-check-endpoints and .opencode/skills/health-check-endpoints in your project.
What does Health Check Endpoints need to run?
SKILL.md names no scripts, command-line tools or credentials: Health Check Endpoints is instructions for the agent only. Our summary lists: Python 3.
Does Health Check Endpoints access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Health Check Endpoints 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 Health Check Endpoints use?
Health Check Endpoints is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Health Check Endpoints use?
About 659 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. Its references folder adds about 1.7k tokens, read only when the agent opens those files.
What are the alternatives to Health Check Endpoints?
Skills that share tags, products or a category with Health Check Endpoints: Kubeshark KFL2 Filter Reference (kubeshark/kubeshark, 12k stars), Nginx To Higress Migration (higress-group/higress, 9.5k stars), NGINX Ingress Controller Feature Checklists (nginx/kubernetes-ingress, 5.1k stars) and NGINX Ingress Policy CRD Guide (nginx/kubernetes-ingress, 5.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Health Check Endpoints?
secondsky (a GitHub user) maintains it in secondsky/claude-skills, which has 227 GitHub stars. The repository holds 168 skills in this directory. The repository was last updated on September 28, 2026.
Source: secondsky/claude-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.