Agent skill

Castai Core Workflow A

by jeremylongshore in jeremylongshore/tons-of-skills-marketplace

Connect a Kubernetes cluster to CAST AI in observation-first mode and establish a trustworthy cost baseline before automation.

MITAuto-check passedDevOps & Cloud

Install Castai Core Workflow A

skills CLI
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill castai-core-workflow-a -a claude-code

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

GitHub CLI
$ gh skill install jeremylongshore/tons-of-skills-marketplace castai-core-workflow-a --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/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/.curated/castai-core-workflow-a .claude/skills/castai-core-workflow-a && 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
castai-core-workflow-a
GitHub stars
2.8k
Token cost
~1.2k tokens
SKILL.md length
462 words
Files
2 (incl. references)
Skills in repo
3,342
Repo updated
First seen
Licence
MIT

At a glance

Connect a Kubernetes cluster to CAST AI in observation-first mode and establish a trustworthy cost baseline before automation.

  • Works in 6 steps: Establish ownership → Preview the connection → Review permissions and features → …
  • Onboarding a new EKS
  • SKILL.md covers Overview, Prerequisites, Instructions and Tool Discipline, plus 4 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Castai Core Workflow A is an agent skill from jeremylongshore/tons-of-skills-marketplace. Connect a Kubernetes cluster to CAST AI in observation-first mode and establish a trustworthy cost baseline before automation. Use when onboarding a new EKS, GKE, AKS, or CAST AI Anywhere cluster. Trigger with: "connect a cluster to CAST AI", "start CAST AI cost monitoring", "onboard CAST AI safely".

Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/official-docs.md`). Compatibility notes: Supports CAST AI documented connection paths; cloud permissions and available features vary by provider and subscription

It sits in DevOps & Cloud, covering Container orchestration. It works with Google Kubernetes Engine and Kubernetes. The repository describes itself as: Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com. The licence is MIT.

When your agent uses it

  • Onboarding a new EKS
  • CAST AI Anywhere cluster
  • With: connect a cluster to CAST AI
  • Start CAST AI cost monitoring

Example prompts

  • “connect a cluster to CAST AI”
  • “start CAST AI cost monitoring”
  • “onboard CAST AI safely”
  • “/castai-core-workflow-a”

Requirements

  • Compatibility (from SKILL.md): Supports CAST AI documented connection paths; cloud permissions and available features vary by provider and subscription
  • Pre-approved tools (allowed-tools): Read, Grep, Write, Edit, Bash(castctl:*), Bash(kubectl:*)

Workflow steps

6 steps, taken from the step headings in SKILL.md.

  1. Establish ownership
  2. Preview the connection
  3. Review permissions and features
  4. Connect the cluster
  5. Verify observation mode
  6. Hand off automation separately

What it can do on your machine

Read from SKILL.md and the folder at commit cfae287. 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:

    • Read
    • Grep
    • Write
    • Edit
    • Bash(castctl:*)
    • Bash(kubectl:*)

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

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

  • Network

    Links to these hosts (documentation or services it may open):

    • docs.cast.ai

    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.

  • Compatibility

    Supports CAST AI documented connection paths; cloud permissions and available features vary by provider and subscription

    From compatibility in the SKILL.md frontmatter.

Context cost

Castai Core Workflow A loads about 1.2k tokens when it runs, and up to ~1.4k if it reads all its reference files. Until then it costs about 81 tokens; SKILL.md has 462 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~81
When it runs · the whole SKILL.md, loaded when a task matches
~1.2k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~1.4k

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 jeremylongshore/tons-of-skills-marketplace at commit cfae287, republished under its MIT licence (© jeremylongshore). 462 words, ~1,200 tokens.

Download SKILL.mdSave it as .claude/skills/castai-core-workflow-a/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
castai-core-workflow-a
description
Connect a Kubernetes cluster to CAST AI in observation-first mode and establish a trustworthy cost baseline before automation. Use when onboarding a new EKS, GKE, AKS, or CAST AI Anywhere cluster. Trigger with: "connect a cluster to CAST AI", "start CAST AI cost monitoring", "onboard CAST AI safely".
allowed-tools
Read, Grep, Write, Edit, Bash(castctl:*), Bash(kubectl:*)
compatibility
Supports CAST AI documented connection paths; cloud permissions and available features vary by provider and subscription
version
2.0.0
argument-hint
[kube-context-or-onboarding-plan]
model
inherit
effort
high
license
MIT
author
Jeremy Longshore <jeremy@intentsolutions.io>
tags
saas, kubernetes, cast-ai, onboarding, cost-monitoring

CAST AI Observation-First Onboarding

Overview

Connect one approved cluster with the recommended castctl path, keep optimization automation off initially, and prove identity, telemetry, ownership, and rollback before expanding control.

Prerequisites

  • A named kube context for EKS, GKE, AKS, or a supported CAST AI Anywhere environment
  • Cluster-admin access for installation and reviewed least-privilege cloud permissions
  • metrics-server when Workload Autoscaling will be evaluated
  • An owner, maintenance window, rollback decision, and evidence location

Instructions

Step 1: Establish ownership

Use Read and Grep to locate existing CAST AI, autoscaler, Terraform, Helm, and GitOps definitions. Stop if another controller owns node provisioning or workload HPA behavior and no coexistence decision exists.

Step 2: Preview the connection

Use Bash(castctl:*) to verify the installed client, authenticate interactively to the intended organization, and run the documented connection dry-run. Record detected provider, cluster, region, selected features, namespace, and proposed cloud changes without connecting.

Step 3: Review permissions and features

Confirm least-privilege cloud access and the exact cluster context. Cost Monitoring is always enabled; select Node Autoscaling or Workload Autoscaling only when entitlement, metrics, disruption, and ownership prerequisites are met. Use Write or Edit to capture the approved choices in the repository runbook.

Step 4: Connect the cluster

Run the reviewed castctl connection during the approved window. Do not substitute the deprecated script flow for a supported castctl environment. Preserve the console URL and sanitized command receipt, never browser tokens or API keys.

Step 5: Verify observation mode

Use Bash(kubectl:*) to verify namespace workloads, readiness, events, and metrics prerequisites. Confirm the console receives the intended cluster and cost data while automation remains in the approved state. Allow sufficient data before judging savings or recommendations.

Show full SKILL.md (188 more words)Show less
Step 6: Hand off automation separately

Document baseline time, current controllers, policy candidates, protected workloads, and rollback owner. Make automation enablement a separate reviewed change using castai-core-workflow-b.

Tool Discipline

Use Read and Grep to establish source-of-truth ownership. Use Write and Edit for the onboarding record and runbook. Use Bash(castctl:) for documented auth, dry-run, connection, and status operations; use Bash(kubectl:) for bounded verification. Never echo credentials or infer permission scope.

Output

  • Reviewed dry-run and permission inventory
  • One connected cluster with documented feature state
  • Agent and telemetry health evidence
  • Baseline and automation handoff record

Examples

An EKS team connects Cost Monitoring first, collects a representative baseline, and delays Node Autoscaling until Karpenter ownership is decided. A GKE team verifies metrics-server before selecting Workload Autoscaling.

Error Handling

FailureResponse
castctl detects the wrong clusterStop and correct kube context before connecting
Existing provisioner ownership is unclearKeep optimization disabled and resolve architecture
Agent is not readyCollect events and logs; do not enable automation
Cost data is incompleteVerify telemetry and wait for a representative window

Resources

© jeremylongshore, 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 skills/.curated/castai-core-workflow-a of jeremylongshore/tons-of-skills-marketplace.

  • SKILL.md
  • references/official-docs.md

Open the folder on GitHubat commit cfae287

Compare with similar skills

Castai Core Workflow A 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.

Castai Core Workflow A compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Castai Core Workflow A this skilljeremylongshore/tons-of-skills-marketplace2.8k—~1.2kAutomated safety check: PassMIT
Mirrord Operatormetalbear-co/mirrord5.4k1 repos~4.6kAutomated safety check: PassMIT
Devopsnicepkg/auto-company1952 repos~814Automated safety check: PassMIT
KubeShark for KubernetesLukasNiessen/kubernetes-skill446—~1.2kAutomated safety check: PassMIT
Kcli Cluster Deploymentkarmab/kcli653—~1.5kAutomated safety check: PassApache-2.0
Aicr Analyzing SnapshotsNVIDIA/aicr440—~3.5kAutomated safety check: PassApache-2.0

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Categories

Questions about Castai Core Workflow A

What does Castai Core Workflow A do?

Connect a Kubernetes cluster to CAST AI in observation-first mode and establish a trustworthy cost baseline before automation. Castai Core Workflow A is an agent skill from jeremylongshore/tons-of-skills-marketplace. Connect a Kubernetes cluster to CAST AI in observation-first mode and establish a trustworthy cost baseline before automation.

When should I use Castai Core Workflow A?

Castai Core Workflow A fits situations like: onboarding a new EKS; CAST AI Anywhere cluster; with: connect a cluster to CAST AI; start CAST AI cost monitoring.

How do I install Castai Core Workflow A in Claude Code?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill castai-core-workflow-a -a claude-code`. Or copy the skill folder (skills/.curated/castai-core-workflow-a in jeremylongshore/tons-of-skills-marketplace) into .claude/skills/castai-core-workflow-a in your project. Claude Code loads it when a task matches its description.

How do I install Castai Core Workflow A in Codex?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill castai-core-workflow-a -a codex`. Or copy the skill folder (skills/.curated/castai-core-workflow-a in jeremylongshore/tons-of-skills-marketplace) into .agents/skills/castai-core-workflow-a in your project. Codex loads it when a task matches its description.

Can I use Castai Core Workflow A 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 jeremylongshore/tons-of-skills-marketplace --skill castai-core-workflow-a -a cursor` (or -a -a, -a or -a for the others). To copy it by hand, put the folder in .cursor/skills/castai-core-workflow-a, .gemini/skills/castai-core-workflow-a, .github/skills/castai-core-workflow-a and .opencode/skills/castai-core-workflow-a in your project.

What does Castai Core Workflow A need to run?

SKILL.md names no scripts, command-line tools or credentials: Castai Core Workflow A is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Grep, Write, Edit, Bash(castctl:*), Bash(kubectl:*). Compatibility (from SKILL.md): Supports CAST AI documented connection paths; cloud permissions and available features vary by provider and subscription.

Does Castai Core Workflow A access the network?

SKILL.md names 1 domain. As links in the text: docs.cast.ai. This is read from the text; nothing was executed.

Is Castai Core Workflow A 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 Castai Core Workflow A use?

Castai Core Workflow A 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 Castai Core Workflow A use?

About 1.2k tokens (SKILL.md is roughly 4.8k 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 230 tokens, read only when the agent opens those files.

What are the alternatives to Castai Core Workflow A?

Skills that share tags, products or a category with Castai Core Workflow A: Mirrord Operator (metalbear-co/mirrord, 5.4k stars), Devops (nicepkg/auto-company, 195 stars), KubeShark for Kubernetes (LukasNiessen/kubernetes-skill, 446 stars) and Kcli Cluster Deployment (karmab/kcli, 653 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Castai Core Workflow A?

jeremylongshore (a GitHub user) maintains it in jeremylongshore/tons-of-skills-marketplace, which has 2,827 GitHub stars. The repository holds 3,342 skills in this directory. The repository was last updated on October 10, 2026.

Source: jeremylongshore/tons-of-skills-marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.