ReddRadar
Agent skill
git-investigate
Git history investigation. Use when: tracking code changes, finding where bugs were introduced, root cause analysis. Not for: code exploration (use code-explore), issue analysis (use issue-analyze). Output: history trace + root cause report.
Install this agent skill to your Project
npx add-skill https://github.com/sd0xdev/sd0x-dev-flow/tree/main/skills/git-investigate
SKILL.md
Git Investigate Skill
Trigger
- Keywords: code history, git blame, track changes, who wrote this, when was it changed, root cause, code archaeology
When NOT to Use
- Code review (use codex-review)
- Feature development (use feature-dev)
- Just want to read code (use Read directly)
Command
/git-investigate src/service/xxx.ts:123 # Specific line
/git-investigate processToken # Function name
/git-investigate "error message" # Keyword
Workflow
Locate code -> git blame -> find commit -> trace history -> analyze changes -> report
Investigation Framework
| Question | Method |
|---|---|
| Who wrote it? | git blame |
| When was it changed? | git log --follow |
| Why was it changed? | commit message + PR |
| What was missed? | git diff compare original vs problematic version |
Common Patterns
| Pattern | Symptom | Root Cause |
|---|---|---|
| Type removed | Enum value deleted | Assumed no longer needed |
| Condition simplified | If conditions reduced | Missed during refactoring |
| Rename | Partially unchanged | Incomplete search-and-replace |
| Boundary ignored | Only handles main flow | Edge cases not considered |
Output
## Git Investigation Report
- **Target**: <file/feature>
- **Timeline**: <commit range>
- **Root cause**: <analysis>
- **Introduced by**: <commit hash + author>
Verification
- Report includes: investigation target, author info, timeline, original vs problematic code
- Root cause has clear analysis
- Fix recommendation is specific and actionable
References
references/commands.md- Git command reference + report template
Examples
Input: Who changed this line of code?
Action: git blame -> find commit -> trace PR -> output report
Input: When was this bug introduced?
Action: git log -p -S -> locate introduction point -> analyze cause -> output report
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Context-aware Q&A with auto context gathering. Use when: user has a quick question about codebase, git history, rules, docs, or skills during development. Not for: code changes (use feature-dev), code review (use codex-review-fast), deep research (use deep-research), full code trace (use code-explore). Output: structured answer with source attribution.
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skill-health-check
Validate skill quality against routing, progressive loading, and verification criteria. Use when: auditing skills, checking skill health, reviewing skill design. Not for: code review (use codex-code-review) or doc review (use doc-review). Output: health report with per-skill ratings + Gate.
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