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Analyze blast radius before making code changes
Instalar com Codex ou Claude Copie este prompt, cole no Codex, Claude ou outro assistente e deixe que ele revise a página da skill e instale para você.
Baseado na classificação ocupacional SOC
Use when the user needs to run OntoIndex CLI commands like analyze/index a repo, check status, clean the index, generate a wiki, or list indexed repos. Examples: "Index this repo", "Reanalyze the codebase", "Generate a wiki"
Use when the user is debugging a bug, tracing an error, or asking why something fails. Examples: "Why is X failing?", "Where does this error come from?", "Trace this bug"
Use when the user asks how code works, wants to understand architecture, trace execution flows, or explore unfamiliar parts of the codebase. Examples: "How does X work?", "What calls this function?", "Show me the auth flow"
Use when the user asks about OntoIndex itself — available tools, how to query the knowledge graph, MCP resources, graph schema, or workflow reference. Examples: "What OntoIndex tools are available?", "How do I use OntoIndex?"
Use when the user wants to know what will break if they change something, or needs safety analysis before editing code. Examples: "Is it safe to change X?", "What depends on this?", "What will break?"
Use when the user wants to review a pull request, understand what a PR changes, assess risk of merging, or check for missing test coverage. Examples: "Review this PR", "What does PR #42 change?", "Is this PR safe to merge?"
| name | ontoindex-impact-analysis |
| description | Analyze blast radius before making code changes |
1. ontoindex_impact({target: "X", direction: "upstream"}) → What depends on this
2. READ ontoindex://repo/{name}/processes → Check affected execution flows
3. ontoindex_detect_changes() → Map current git changes to affected flows
4. Assess risk and report to user
If "Index is stale" → run
npx ontoindex analyzein terminal.
- [ ] ontoindex_impact({target, direction: "upstream"}) to find dependents
- [ ] Review d=1 items first (these WILL BREAK)
- [ ] Check high-confidence (>0.8) dependencies
- [ ] READ processes to check affected execution flows
- [ ] ontoindex_detect_changes() for pre-commit check
- [ ] Assess risk level and report to user
| Depth | Risk Level | Meaning |
|---|---|---|
| d=1 | WILL BREAK | Direct callers/importers |
| d=2 | LIKELY AFFECTED | Indirect dependencies |
| d=3 | MAY NEED TESTING | Transitive effects |
| Affected | Risk |
|---|---|
| <5 symbols, few processes | LOW |
| 5-15 symbols, 2-5 processes | MEDIUM |
| >15 symbols or many processes | HIGH |
| Critical path (auth, payments) | CRITICAL |
ontoindex_impact — the primary tool for symbol blast radius:
ontoindex_impact({
target: "validateUser",
direction: "upstream",
minConfidence: 0.8,
maxDepth: 3
})
→ d=1 (WILL BREAK):
- loginHandler (src/auth/login.ts:42) [CALLS, 100%]
- apiMiddleware (src/api/middleware.ts:15) [CALLS, 100%]
→ d=2 (LIKELY AFFECTED):
- authRouter (src/routes/auth.ts:22) [CALLS, 95%]
ontoindex_detect_changes — git-diff based impact analysis:
ontoindex_detect_changes({scope: "staged"})
→ Changed: 5 symbols in 3 files
→ Affected: LoginFlow, TokenRefresh, APIMiddlewarePipeline
→ Risk: MEDIUM
1. ontoindex_impact({target: "validateUser", direction: "upstream"})
→ d=1: loginHandler, apiMiddleware (WILL BREAK)
→ d=2: authRouter, sessionManager (LIKELY AFFECTED)
2. READ ontoindex://repo/my-app/processes
→ LoginFlow and TokenRefresh touch validateUser
3. Risk: 2 direct callers, 2 processes = MEDIUM