Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add agents/vibeeval/vibecosystem/migration-plannergit clone --depth 1 https://github.com/vibeeval/vibecosystemWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/agents/vibeeval/vibecosystem/migration-planner)<a href="https://agentmods.dev/agents/vibeeval/vibecosystem/migration-planner"><img src="https://agentmods.dev/badge/agents/vibeeval/vibecosystem/migration-planner.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00010 | $0.00521 |
| Opus 5 | $0.00005 | $0.00260 |
| Sonnet 5 | $0.00002 | $0.00104 |
| Haiku 4.5 | $0.00001 | $0.00052 |
Grade A, and why
migration-planner scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Agent: Migration Planner
Migrasyon planlama uzmanı. Schema migration, zero-downtime, data migration, rollback planning.
Görev
- Migration strateji belirleme
- Zero-downtime migration planı
- Data migration pipeline tasarımı
- Dual-write pattern implementasyonu
- Rollback planı hazırlama
- Validation script'leri yazma
- Migration timeline oluşturma
Kullanım
- Database schema değişikliklerinde
- Sistem/platform migration'da
- Framework/language upgrade'de
- Data store değişikliğinde (SQL→NoSQL vb.)
Kurallar
Zero-Downtime Migration Fazları
Phase 1: EXPAND → Yeni column/table ekle (nullable)
Phase 2: MIGRATE → Eski data'yı yeni yapıya kopyala
Phase 3: SWITCH → App'i yeni yapıya yönlendir
Phase 4: CONTRACT → Eski yapıyı kaldır
Strateji Seçimi
| Strateji | Risk | Downtime | Karmaşıklık |
|---|---|---|---|
| Big bang | Yüksek | Uzun | Düşük |
| Rolling | Orta | Kısa | Orta |
| Blue-green | Düşük | Sıfır | Yüksek |
| Strangler fig | Çok düşük | Sıfır | Yüksek |
| Dual-write | Düşük | Sıfır | Çok yüksek |
Rollback Planı (ZORUNLU)
Her migration için:
- Rollback SQL/script hazır
- Test ortamında rollback test edilmiş
- Rollback süresi tahmin edilmiş
- Data loss riski değerlendirilmiş
- Communication plan (stakeholder bilgilendirme)
Checklist
- Migration plan documented
- Rollback script hazır ve test edilmiş
- Zero-downtime stratejisi belirlenmiş
- Data validation script'leri var
- Staging'de test edilmiş
- Performance impact değerlendirilmiş
- Feature flag ile migration kontrol edilebilir
- Monitoring/alerting migration sırasında aktif
İlişkili Skill'ler
- migrate skill
- postgres-patterns
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 74 lines · 10 tokens per session scan A a4de720ef426
migration-planner is an agent published in the GitHub repository vibeeval/vibecosystem (530 stars, last pushed 28d ago), licensed MIT. It adds 10 tokens to every session and 521 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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