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Diagnostic Action Skill · aiskillstore | DecimalAI

devopsby aiskillstore

Diagnostic Action Skill

aiskillstore/diagnostic-action

Source aiskillstore/marketplace ↗License Not recorded

Use when the user asks why something happened, what’s wrong, root cause analysis, debugging, or incident explanation.

NewMaintained

Automatic

DevOps & SRE pack

Last verified 9/3/2026

What it changes

Passed 9 of 22 test cases with the skill, and 10 of 22 without it.

Without skill45%

With skill41%

Checks it passed that the model alone missed

The response does not recommend query rewrites or index modifications.
The response refrains from prescribing JVM tuning flags or GC collector switches.
The response refrains from recommending CoreDNS deployment changes or resource increases.

and 1 more in the full report

3 fixed6 passed either way9 still failing4 broke

Pass-rate lift: -5 pp
Tokens: -4%
Agent turns: 0%
Response time: +1%

Model gemini-3.6-flashMeasured 9/3/2026v19 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/aiskillstore-diagnostic-action/SKILL.md https://app.decimal.ai/s/aiskillstore-diagnostic-action/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add aiskillstore-diagnostic-action, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/aiskillstore-diagnostic-action/ and pins it in .decimal/skills.lock

decimalai skills add aiskillstore-diagnostic-action

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/aiskillstore-diagnostic-action/SKILL.md https://app.decimal.ai/s/aiskillstore-diagnostic-action/SKILL.md

Raw file: /s/aiskillstore-diagnostic-action/SKILL.md ↗ · machine-readable summary at /s/aiskillstore-diagnostic-action.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 3 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 3

Prompt

Pods across multiple namespaces are experiencing intermittent CoreDNS lookup failures with SERVFAIL errors. Perform a diagnostic analysis outlining the symptoms, mechanisms, ranked hypotheses, and required CoreDNS log metrics.

What was checked, without and with the skill
Checked	Without skill	With skill
The response refrains from recommending CoreDNS deployment changes or resource increases.	Missed	Passed
The response specifies monitoring CoreDNS metric coredns_dns_request_duration_seconds_bucket for query latency distribution.	Missed	Passed

case-12 · gemini-3.6-flash · 9/3/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md33 linessingle file

Diagnostic Action Skill

Purpose

Identify and explain likely causes of an observed problem or symptom.

When to use

“Why did this happen?”
Root cause analysis
Debugging / incident investigation
Failure analysis

Do NOT use for:

recommendations or fixes (use prescriptive-actions)
plans or procedures (use planning-action / procedural-action)

Operating rules

Restate symptoms and scope clearly.
Generate multiple plausible hypotheses.
Explain the mechanism for each hypothesis.
Rank by likelihood and impact.
Identify missing data that would disambiguate causes.
Do not prescribe fixes unless explicitly asked.

Outputs

Symptoms & scope

Hypotheses (ranked)

Cause
Mechanism
Evidence for/against
Confidence

Most likely causes

Data needed / open questions

Track record

Benchmark

9 / 22

test cases passed, vs 10 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/10/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

aiskillstore / marketplace

skills/bellabe/diagnostic-action/SKILL.md

View on GitHub ↗

Imported 8/10/2026Version v1

Other skills for the same job

Published skills whose descriptions closely match this one, with their headline benchmark lift.

contextosai/diagnose-root-causeDiagnose software failures through reproduction, boundary localization, competing hypotheses, and discriminating experiments. Use when Codex is asked to investigate a bug, flaky test, crash, incorrect result, performance regression, production symptom, or unexplained behavior and should determine the cause before implementing a fix. Produce an evidence-backed causal explanation and verification plan; do not patch unless the user also asks for a fix.Close match+23 pp pass-rate lift

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

Diagnostic Action Skill

Purpose

When to use

Operating rules

Outputs

Symptoms & scope

Hypotheses (ranked)

Most likely causes

Data needed / open questions

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

Related skills