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.
npx skills add Kilo-Org/kilo-marketplace --skill troubleshoot-cassandragit clone --depth 1 https://github.com/Kilo-Org/kilo-marketplaceWrote 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.
[](https://agentmods.dev/skills/kilo-org/kilo-marketplace/troubleshoot-cassandra)<a href="https://agentmods.dev/skills/kilo-org/kilo-marketplace/troubleshoot-cassandra"><img src="https://agentmods.dev/badge/skills/kilo-org/kilo-marketplace/troubleshoot-cassandra/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.
<a href="https://agentmods.dev/skills/kilo-org/kilo-marketplace/troubleshoot-cassandra"><img src="https://agentmods.dev/badge/skills/kilo-org/kilo-marketplace/troubleshoot-cassandra.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00082 | $0.02152 |
| Opus 5 | $0.00041 | $0.01076 |
| Sonnet 5 | $0.00016 | $0.00430 |
| Haiku 4.5 | $0.00008 | $0.00215 |
Grade A, and why
troubleshoot-cassandra scanned grade A with 0 findings 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 9d 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
Copies of this mod
1 near-identical copy found in the catalogue:
- troubleshoot-cassandra — 94% identical, 31 lines differ
How it starts
The opening of the file, as written. The whole thing — 184 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Troubleshoot Apache Cassandra
When to use this skill
- GC Death Spiral: Heap pressure then long GC pauses then gossip failures then node marked DOWN then client retries flood then more heap pressure. Self-reinforcing.
- Compaction Death Spiral: Write rate exceeds compaction throughput then SSTables accumulate then read amplification increases then latency spikes then more compaction needed then disk I/O saturated.
- Tombstone Storm: Accumulated tombstones (deletes/expired TTLs) force reads to scan massive amounts of dead data then read latency spikes, possible query abortion at 100K tombstones.
- Disk Space Exhaustion: Compaction backlog + snapshots + hints consume space then compaction cannot run (needs temporary space) then writes blocked.
- Hint Overflow: Long node outage then hints accumulate on coordinators then hints expire
(
max_hint_window, default 3h) then data permanently inconsistent unless repaired. - Any time the user reports a Apache Cassandra service behaving outside its expected envelope (elevated errors, latency, saturation, resource exhaustion, or unexpected restarts).
- An on-call engineer is paging on a Netdata alert tied to a Apache Cassandra instance and wants a structured triage path.
Key facts
- This skill wraps the Netdata operator playbook for Apache Cassandra. It does not replace the playbook; it routes a coding agent through MCP queries against the same signals the playbook relies on.
- The playbook decomposes Apache Cassandra health into 8 signal domains: Availability, Throughput, Latency, Errors, Saturation / Internal State, Replication / Consistency. Each domain maps to one rule file in this skill.
- Dominant failure archetypes the playbook calls out: GC Death Spiral; Compaction Death Spiral; Tombstone Storm; Disk Space Exhaustion; Hint Overflow.
- Netdata observes the signals listed in the rule files via its native collectors, plus any OpenTelemetry-shipped metrics that your Apache Cassandra instrumentation adds. Both paths end at the same MCP query surface.
- Netdata's cassandra collector emits 28 context(s) under
cassandra.*. The rule files enumerate which contexts surface which domain; the Verification section below names the load-bearing ones explicitly.
What ships with it
11 files 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.
- LICENSE 11 KB
- README.md 98 B
- rules/availability.md 4.8 KB
- rules/cache-performance.md 5.0 KB
- rules/errors.md 6.1 KB
- rules/latency.md 4.9 KB
- rules/other-contexts.md 4.1 KB
- rules/replication-consistency.md 5.7 KB
- rules/saturation-internal-state.md 9.3 KB
- rules/security-integrity.md 6.1 KB
- rules/throughput.md 5.4 KB
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.
- 9d ago First seen · 184 lines · 82 tokens per session scan A f27d99596067
troubleshoot-cassandra is a skill published in the GitHub repository Kilo-Org/kilo-marketplace (175 stars, last pushed 22d ago), licensed Apache-2.0. It adds 82 tokens to every session and 2,152 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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