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Root cause analysis for bugs, incidents, and regressions. Produces a structured RCA with reproduction steps, impact assessment, and recommended minimum fix. Used in bug-triage and hotfix patterns.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
Six-dimension structured code review framework. Produces severity-ranked findings (CRITICAL/HIGH/MEDIUM/LOW/INFO) with evidence mapped to AC IDs, and a verdict (APPROVE/REQUEST_CHANGES/NEEDS_DISCUSSION). Used by kopi-reviewer agent.
Playwright-based evidence capture protocol. Produces screenshot + HTML + console proof mapped per AC ID. Used by kopi-validate agent to generate pass/fail evidence for the evidence-manifest.
Converts a Figma frame into a structured intent-package with AC confidence scoring, state matrix enumeration, and JP/VI/EN annotation handling. Used by kopi-figspec agent.
Knowledge harvesting — surface, distil, store, and recall tacit business knowledge. Run the Recall → Codebase-first → Grill → Distil → Confirm loop when a task needs a business fact that is not written down (why "予約" is always "reservation", when a feedback is a CR vs a Bug, which flow touches payments). Invokable by kopi-brse, kopi-implement, and any kopi agent that hits a business-knowledge gap. Writes verified facts to knowledge/.
Assemble accumulated project knowledge + context into a compact, reusable context-pack — for the orchestrator to hand to subagents on fan-out (so each subagent does NOT re-gather), or for any agent/member to re-establish context fast on resume. Complements `harvest` (harvest distils NEW tacit facts into knowledge/; context-pack packages EXISTING context — code, knowledge, glossary, structure). Reads knowledge/INDEX.md + glossary + structural signals; never invents new knowledge.
Cross-repository contract analysis. Identifies downstream impact of changes to shared types, API contracts, or shared utilities. Used by kopi-reviewer in cross-repo pattern and when breaking changes are detected.
| name | investigate |
| description | Root cause analysis for bugs, incidents, and regressions. Produces a structured RCA with reproduction steps, impact assessment, and recommended minimum fix. Used in bug-triage and hotfix patterns. |
| license | MIT |
| allowed-tools | ["file-search","mcp__github__authenticate"] |
Root cause analysis skill for bugs, incidents, and regressions.
Read the bug report. Identify minimum reproduction case. Capture: exact steps, environment, expected vs. actual behavior. Check if reproducible in current main branch.
git bisect if regression. Add targeted logging. Narrow scope to specific file:line range.
| Category | Description |
|---|---|
logic_error | Wrong conditional, off-by-one, incorrect algorithm |
race_condition | Async timing issue, shared state |
missing_validation | Input not validated at boundary |
api_contract_drift | BE/FE contract mismatch |
dependency_change | Library update broke behavior |
config_error | Wrong env var, misconfigured flag |
data_issue | Unexpected data in prod not handled |
Which users are affected? Is data corrupted or just display wrong? Is there a workaround? Is this a security issue? (→ escalate to kopi-guard immediately)
{
"task_id": "...",
"root_cause": "logic_error",
"affected_file": "src/auth/token.ts",
"affected_line_range": "L42-L67",
"reproduction_steps": ["..."],
"impact": { "scope": "all users", "data_corrupted": false },
"recommended_fix": "...",
"escalate_to_guard": false
}