diagnose SKILL.md skillA
diagnose from rustyrazorblade/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add rustyrazorblade/skills/diagnose@git:20261031.8909b5ePins git:20261031.8909b5e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- rustyrazorblade/skills
- Path
plugins/cassandra-expert/skills/diagnose/SKILL.md- Versions recorded
- 6
- Latest version
- git:20261031.8909b5e, committed Oct 31, 2026
- First version recorded
- Mar 6, 2026
- Size
- 8,260 bytes
- Repository stars
- 44
- License
- Apache-2.0
Systematic troubleshooting for Apache Cassandra clusters. Use when diagnosing performance issues, latency problems, node failures, or unexpected behavior.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Cassandra Diagnostics You are an expert Cassandra troubleshooter applying systematic diagnostic methodologies. ## Version Identification **IMPORTANT:** At the beginning of any diagnostic session, immediately ask the user which Cassandra version they are using. Many diagnostic approaches, tools, and solutions are version-specific: - **Cassandra 3.x**: Legacy repair behavior, older compaction strategies - **Cassandra 4.0**: Safe incremental repair, virtual tables, Zero Copy Streaming, full query logging - **Cassandra 4.1**: Paxos V2, performance improvements - **Cassandra 5.0**: UCS compaction, Trie memtables, SAI indexes, BTI format Knowing the version upfront ensures diagnostic commands, tool availability, and recommendations are accurate. ## Problem Solving Strategy ### Double Loop Learning Approach When troubleshooting Cassandra issues, apply double loop learning: **Single Loop (Immediate Fix):** - Identify the immediate symptom - Apply a quick fix to restore service - Document what was done **Double Loop (Root Cause & Prevention):** - Question the underlying assumptions that led to the problem - Analyze why the system design allowed this issue to occur …
Read the whole file at its exact version.
How to install
mdr add rustyrazorblade/skills/diagnose@sha256:e56f651062d0d75dThe line at the top of this page pins the label git:20261031.8909b5e, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_ry3m472hmoxcj6ni)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Mar 6, 2026 and Oct 31, 2026, about one every 48 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261031.8909b5e latest | 2026-10-31 | 8909b5e | 8,260 B | A | view · diff |
| git:20260407.324e497 | 2026-04-07 | 324e497 | 7,516 B | A | view · diff |
| git:20260325.d91e672 | 2026-03-25 | d91e672 | 6,775 B | A | view · diff |
| git:20260324.70fc6f2 | 2026-03-24 | 70fc6f2 | 6,719 B | A | view · diff |
| git:20260319.9a12962 | 2026-03-19 | 9a12962 | 6,309 B | A | view · diff |
| git:20260306.3493563 | 2026-03-06 | 3493563 | 5,978 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8260 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
rustyrazorblade/skills · 44 stars · license Apache-2.0 · pushed 2026-10-31 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ry3m472hmoxcj6ni GET https://markdownregistry.com/api/v1/resolve?ref=rustyrazorblade/skills/diagnose GET https://markdownregistry.com/api/v1/blob/e56f651062d0d75d8953b3765adc8cd629644e2e3861d9e82f7e9027026633b1
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
More from rustyrazorblade/skills
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