reviewing-cluster-health

reviewing-cluster-health is a skill for Claude Code, Codex from cockroachlabs/cockroachdb-skills. It costs 97 tokens per session (3,438 once invoked), scanned A, original, Apache-2.0.

A health check for a CockroachDB cluster, a distributed database made of multiple cooperating nodes. It first identifies the deployment type, then runs the diagnostics available for that type.

In plain words
What is it for?
Use it for daily checks, pre-maintenance validation, post-incident recovery checks, production-readiness reviews, and capacity or performance monitoring.
Why use it?
It helps operators spot problems with health, capacity, or performance and confirm whether a cluster is ready before or recovered after an operational event.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it for daily checks, pre-maintenance validation, post-incident recovery checks, production-readiness reviews, and capacity or performance monitoring.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/cockroachlabs/cockroachdb-skills/reviewing-cluster-health
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add cockroachlabs/cockroachdb-skills --skill reviewing-cluster-health
Clone the repo
git clone --depth 1 https://github.com/cockroachlabs/cockroachdb-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for reviewing-cluster-health

README.md
[![agentmods](https://agentmods.dev/badge/skills/cockroachlabs/cockroachdb-skills/reviewing-cluster-health/github.svg)](https://agentmods.dev/skills/cockroachlabs/cockroachdb-skills/reviewing-cluster-health)
Your own site
<a href="https://agentmods.dev/skills/cockroachlabs/cockroachdb-skills/reviewing-cluster-health"><img src="https://agentmods.dev/badge/skills/cockroachlabs/cockroachdb-skills/reviewing-cluster-health/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for reviewing-cluster-health

Your own site · 80×15
<a href="https://agentmods.dev/skills/cockroachlabs/cockroachdb-skills/reviewing-cluster-health"><img src="https://agentmods.dev/badge/skills/cockroachlabs/cockroachdb-skills/reviewing-cluster-health.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 97 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,438 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00097 $0.03438
Opus 5 $0.00048 $0.01719
Sonnet 5 $0.00019 $0.00688
Haiku 4.5 $0.00010 $0.00344

Measured 12d ago against content hash d4e445a8a56b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

reviewing-cluster-health scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- The Prometheus metric endpoint on each node: `curl -ks https://<node>:8080/_status/vars | grep '^capacity'` (`capacity`, `capacity_used`, `capacity_available`)
Origin

Copies of this mod

2 near-identical copies found in the catalogue:

skills/cockroachdb-operations-and-lifecycle/reviewing-cluster-health/SKILL.md · 368 lines

How it starts

The opening of the file, as written. The whole thing — 368 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Reviewing Cluster Health

Performs a comprehensive health check of a CockroachDB cluster. Before running diagnostics, this skill gathers deployment context to provide the right queries and tools for the operator's tier.

When to Use This Skill

  • Daily or shift-start operational health checks
  • Before starting maintenance (Self-Hosted, Advanced, BYOC)
  • After incidents to confirm recovery
  • Verifying production readiness
  • Monitoring capacity and performance

For live query issues: Use triaging-live-sql-activity. For background jobs: Use monitoring-background-jobs. For range analysis: Use analyzing-range-distribution.


Step 1: Gather Context

Required Context

Question Options Why It Matters
Deployment tier? Self-Hosted, Advanced, BYOC, Standard, Basic Determines available diagnostics and operator responsibilities
Reason for health check? Daily check, Pre-maintenance, Post-incident, Pre-upgrade Prioritizes which dimensions to check first

Additional Context (by tier)

If Self-Hosted:

Question Options Why It Matters
Access available? SQL + CLI, SQL only Determines which tools can be used
Cloud provider? AWS, GCP, Azure, On-Premises Affects infrastructure-level checks
Kubernetes deployment? Yes (Operator, Helm, manual), No Changes CLI commands and monitoring
Node count and regions? e.g., 9 nodes, 3 regions Sets expectations for query results

If Advanced or BYOC:

Question Options Why It Matters
Cloud provider? (BYOC only) AWS, GCP, Azure For infrastructure-level monitoring in your cloud account

Read the full file on GitHub · 368 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 368 lines · 97 tokens per session scan A d4e445a8a56b

Subscribe to this mod's changes

reviewing-cluster-health is a skill published in the GitHub repository cockroachlabs/cockroachdb-skills (21 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 97 tokens to every session and 3,438 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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