Bash Defensive Patterns
promovaweb/setupvibe
Master defensive Bash programming techniques for production-grade scripts.
Diagnose CAST AI connection, agent, node autoscaling, and workload autoscaling failures without making speculative changes.
Install Castai Common Errors
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill castai-common-errors -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace castai-common-errors --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/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/.curated/castai-common-errors .claude/skills/castai-common-errors && 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 "castai-common-errors" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/castai-common-errors into .claude/skills/castai-common-errors/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "castai-common-errors", 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/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/castai-common-errorsType 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 jeremylongshore/tons-of-skills-marketplace --skill castai-common-errors -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace castai-common-errors --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/.curated/castai-common-errors .agents/skills/castai-common-errors && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "castai-common-errors" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/castai-common-errors into .agents/skills/castai-common-errors/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "castai-common-errors", 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 jeremylongshore/tons-of-skills-marketplace --skill castai-common-errors -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace castai-common-errors --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/.curated/castai-common-errors .cursor/skills/castai-common-errors && 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 "castai-common-errors" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/castai-common-errors into .cursor/skills/castai-common-errors/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "castai-common-errors", 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/jeremylongshore/tons-of-skills-marketplace.git --path skills/.curated/castai-common-errors--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 jeremylongshore/tons-of-skills-marketplace --skill castai-common-errors -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace castai-common-errors --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/.curated/castai-common-errors .gemini/skills/castai-common-errors && 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 "castai-common-errors" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/castai-common-errors into .gemini/skills/castai-common-errors/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "castai-common-errors", 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 jeremylongshore/tons-of-skills-marketplace castai-common-errorsInstalls 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 jeremylongshore/tons-of-skills-marketplace --skill castai-common-errors -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/.curated/castai-common-errors .github/skills/castai-common-errors && 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 "castai-common-errors" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/castai-common-errors into .github/skills/castai-common-errors/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "castai-common-errors", 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 jeremylongshore/tons-of-skills-marketplace --skill castai-common-errors -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace castai-common-errors --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/.curated/castai-common-errors .opencode/skills/castai-common-errors && 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 "castai-common-errors" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/castai-common-errors into .opencode/skills/castai-common-errors/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "castai-common-errors", 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
castai-common-errors- GitHub stars
- 2.8k
- Token cost
- ~1.4k tokens
- SKILL.md length
- 493 words
- Files
- 2 (incl. references)
- Skills in repo
- 3,342
- Repo updated
- First seen
- Licence
- MIT
At a glance
Diagnose CAST AI connection, agent, node autoscaling, and workload autoscaling failures without making speculative changes.
- Works in 5 steps: Freeze the symptom → Check installation health → Classify the failure plane → …
- A cluster is disconnected
- 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 Common Errors is an agent skill from jeremylongshore/tons-of-skills-marketplace. Diagnose CAST AI connection, agent, node autoscaling, and workload autoscaling failures without making speculative changes. Use when a cluster is disconnected, recommendations are absent, pods are not optimized, or capacity does not scale as expected. Trigger with: "debug CAST AI", "CAST AI is not scaling", "why is CAST AI disconnected".
Its SKILL.md is about 1.4k 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: Requires read access to the target kube context; console or API evidence may require an appropriately scoped CAST AI identity
It sits in DevOps & Cloud. It works with Bash. 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
- A cluster is disconnected
- Recommendations are absent
- Pods are not optimized
- Capacity does not scale as expected
Example prompts
- “debug CAST AI”
- “CAST AI is not scaling”
- “why is CAST AI disconnected”
- “/castai-common-errors”
Requirements
- Compatibility (from SKILL.md): Requires read access to the target kube context; console or API evidence may require an appropriately scoped CAST AI identity
- Pre-approved tools (allowed-tools): Read, Grep, Bash(kubectl:*), Bash(helm:*), Bash(castctl:*)
Workflow steps
5 steps, taken from the step headings in SKILL.md.
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:
ReadGrepBash(kubectl:*)Bash(helm:*)Bash(castctl:*)
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
Requires read access to the target kube context; console or API evidence may require an appropriately scoped CAST AI identity
From compatibility in the SKILL.md frontmatter.
Context cost
Castai Common Errors loads about 1.4k tokens when it runs, and up to ~1.6k if it reads all its reference files. Until then it costs about 90 tokens; SKILL.md has 493 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 jeremylongshore/tons-of-skills-marketplace at commit cfae287, republished under its MIT licence (© jeremylongshore). 493 words, ~1,367 tokens.
Download SKILL.mdSave it as
.claude/skills/castai-common-errors/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- castai-common-errors
- description
- Diagnose CAST AI connection, agent, node autoscaling, and workload autoscaling failures without making speculative changes. Use when a cluster is disconnected, recommendations are absent, pods are not optimized, or capacity does not scale as expected. Trigger with: "debug CAST AI", "CAST AI is not scaling", "why is CAST AI disconnected".
- allowed-tools
- Read, Grep, Bash(kubectl:*), Bash(helm:*), Bash(castctl:*)
- compatibility
- Requires read access to the target kube context; console or API evidence may require an appropriately scoped CAST AI identity
- version
- 2.0.0
- argument-hint
- [cluster-context-or-symptom]
- model
- inherit
- effort
- high
- license
- MIT
- author
- Jeremy Longshore <jeremy@intentsolutions.io>
- tags
- saas, kubernetes, cast-ai, diagnostics, operations
CAST AI Failure Triage
Overview
Separate observation, connectivity, policy, capacity, and disruption failures before proposing a change. Preserve the failing state, use current component topology, and stop when the evidence requires cloud-provider or CAST AI support access.
Prerequisites
- The exact kube context, cluster, region, time window, and observed symptom
- Read-only access to the
castai-agentnamespace - The declared installation owner: castctl, Terraform, GitOps, or console
Instructions
Step 1: Freeze the symptom
Record expected versus actual behavior, timestamps, workload identity, pending-pod reason, and recent configuration changes. Use Read and Grep on runbooks and IaC to determine whether Cost Monitoring, Node Autoscaling, or Workload Autoscaling is actually enabled.
Step 2: Check installation health
Use Bash(castctl:) for version or non-mutating status commands supported by the installed client. Use Bash(helm:) to inspect releases and values, then Bash(kubectl:*) to inspect workloads, readiness, events, and bounded logs in castai-agent. Do not restart components before collecting evidence.
Step 3: Classify the failure plane
| Plane | Evidence | Likely boundary |
|---|---|---|
| Connection | Agent readiness, outbound failures, console disconnect | Identity, network, or cloud permissions |
| Node scaling | Pending pods, policy bounds, node-template fit | Unsatisfied constraints or maximum CPU boundary |
| Workload scaling | Missing recommendations, policy assignment, metrics | Metrics server, confidence, policy, or unsupported workload |
| Disruption | Eviction denial, PDB events, deferred changes | PDB or selected apply mode |
| Reporting | Missing cost or savings window | Ingestion, baseline, adoption, or pricing configuration |
Step 4: Test one hypothesis
Choose the smallest reversible check. Confirm regional endpoint alignment, effective scaling-policy assignment, metrics availability, supported workload type, node-template constraints, and cloud quota. Treat the deprecated cluster minimum CPU setting as migration debt, not a current control to add.
Step 5: Decide the owner and remedy
Map the evidence to the owning layer. Change repository-managed values only through their source of truth; do not mix console edits into Terraform or GitOps ownership. Escalate with a redacted bundle when the failure is inside the hosted control plane or an undocumented provider response.
Show full SKILL.md (175 more words)Show less
Tool Discipline
Use Read and Grep for configuration and runbook evidence. Use Bash(kubectl:), Bash(helm:), and Bash(castctl:*) only for bounded inspection commands. Do not apply, upgrade, restart, connect, disconnect, or expose Secret objects during diagnosis.
Output
- A timestamped symptom and environment summary
- Evidence grouped by failure plane
- One supported root-cause hypothesis with confidence
- A reversible remedy, rollback condition, and escalation owner
Examples
Recommendations are absent because metrics-server is missing, so the remedy belongs to cluster observability. A node remains pending because every approved node template conflicts with its constraints; increasing a global limit without reviewing the workload is not the remedy.
Error Handling
| Failure | Response |
|---|---|
| Kube context is ambiguous | Stop before any cluster command and resolve it |
| Logs include credentials or inventory | Redact locally and do not attach raw output |
| A PDB blocks Immediate mode | Preserve the PDB and evaluate Deferred mode with the workload owner |
| Evidence points to cloud quota | Escalate to the cloud owner with the exact denied dimension |
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-common-errors of jeremylongshore/tons-of-skills-marketplace.
- SKILL.md
- references/official-docs.md
Open the folder on GitHubat commit cfae287
Compare with similar skills
Castai Common Errors 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 |
|---|---|---|---|---|---|---|
| Castai Common Errors this skilljeremylongshore/tons-of-skills-marketplace | 2.8k | — | ~1.4k | Automated safety check: Pass | MIT | |
| Bash Defensive Patternspromovaweb/setupvibe | 103 | 14 repos | ~572 | Automated safety check: Pass | GPL-3.0 | |
| Maintainer Triageredis/node-redis | 18k | — | ~1.9k | Automated safety check: Pass | MIT | |
| Aspiremicrosoft/aspire.dev | 195 | 4 repos | ~1.1k | Automated safety check: Pass | MIT | |
| Rtk Skillsopaco/deepwiki-rs | 3.1k | — | ~1.4k | Automated safety check: Pass | MIT | |
| Finalizezifeo/lade | 134 | — | ~1k | Automated safety check: Pass | MPL-2.0 |
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Questions about Castai Common Errors
What does Castai Common Errors do?
Diagnose CAST AI connection, agent, node autoscaling, and workload autoscaling failures without making speculative changes. Castai Common Errors is an agent skill from jeremylongshore/tons-of-skills-marketplace. Diagnose CAST AI connection, agent, node autoscaling, and workload autoscaling failures without making speculative changes.
When should I use Castai Common Errors?
Castai Common Errors fits situations like: A cluster is disconnected; recommendations are absent; pods are not optimized; capacity does not scale as expected.
How do I install Castai Common Errors in Claude Code?
Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill castai-common-errors -a claude-code`. Or copy the skill folder (skills/.curated/castai-common-errors in jeremylongshore/tons-of-skills-marketplace) into .claude/skills/castai-common-errors in your project. Claude Code loads it when a task matches its description.
How do I install Castai Common Errors in Codex?
Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill castai-common-errors -a codex`. Or copy the skill folder (skills/.curated/castai-common-errors in jeremylongshore/tons-of-skills-marketplace) into .agents/skills/castai-common-errors in your project. Codex loads it when a task matches its description.
Can I use Castai Common Errors 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-common-errors -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/castai-common-errors, .gemini/skills/castai-common-errors, .github/skills/castai-common-errors and .opencode/skills/castai-common-errors in your project.
What does Castai Common Errors need to run?
SKILL.md names no scripts, command-line tools or credentials: Castai Common Errors is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Grep, Bash(kubectl:*), Bash(helm:*), Bash(castctl:*). Compatibility (from SKILL.md): Requires read access to the target kube context; console or API evidence may require an appropriately scoped CAST AI identity.
Does Castai Common Errors 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 Common Errors 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 Common Errors use?
Castai Common Errors 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 Common Errors use?
About 1.4k tokens (SKILL.md is roughly 5.5k 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 217 tokens, read only when the agent opens those files.
What are the alternatives to Castai Common Errors?
Skills that share tags, products or a category with Castai Common Errors: Bash Defensive Patterns (promovaweb/setupvibe, 103 stars), Maintainer Triage (redis/node-redis, 18k stars), Aspire (microsoft/aspire.dev, 195 stars) and Rtk Skill (sopaco/deepwiki-rs, 3.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Castai Common Errors?
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.