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 skills/morningstar202604/awesome-skillkit/migration-architectnpx skills add Morningstar202604/awesome-skillkit --skill migration-architectgit clone --depth 1 https://github.com/Morningstar202604/awesome-skillkitWhat 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 | $0.00058 | $0.03354 |
| Opus 5 | $0.00029 | $0.01677 |
| Sonnet 5 | $0.00012 | $0.00671 |
| Haiku 4.5 | $0.00006 | $0.00335 |
Grade A, and why
migration-architect 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 yesterday.
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.
How it starts
The opening of the file, as written. The whole thing — 434 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Migration Architect
Tier: POWERFUL
Category: Engineering - Migration Strategy
Purpose: Zero-downtime migration planning, compatibility validation, and rollback strategy generation
Overview
The Migration Architect skill provides comprehensive tools and methodologies for planning, executing, and validating complex system migrations with minimal business impact. This skill combines proven migration patterns with automated planning tools to ensure successful transitions between systems, databases, and infrastructure.
Core Capabilities
1. Migration Strategy Planning
- Phased Migration Planning: Break complex migrations into manageable phases with clear validation gates
- Risk Assessment: Identify potential failure points and mitigation strategies before execution
- Timeline Estimation: Generate realistic timelines based on migration complexity and resource constraints
- Stakeholder Communication: Create communication templates and progress dashboards
2. Compatibility Analysis
- Schema Evolution: Analyze database schema changes for backward compatibility issues
- API Versioning: Detect breaking changes in REST/GraphQL APIs and microservice interfaces
- Data Type Validation: Identify data format mismatches and conversion requirements
- Constraint Analysis: Validate referential integrity and business rule changes
3. Rollback Strategy Generation
- Automated Rollback Plans: Generate comprehensive rollback procedures for each migration phase
- Data Recovery Scripts: Create point-in-time data restoration procedures
- Service Rollback: Plan service version rollbacks with traffic management
- Validation Checkpoints: Define success criteria and rollback triggers
Quick Start — plan → check compatibility → generate rollback
All paths relative to this skill folder; sample inputs in assets/, expected shapes in expected_outputs/.
# 1. Generate the migration plan from a spec (copy assets/sample_database_migration.json)
python3 scripts/migration_planner.py --input migration_spec.json --format json -o migration_plan.json
# 2. Check schema/API compatibility — exits non-zero unless fully compatible (CI gate)
python3 scripts/compatibility_checker.py --before assets/database_schema_before.json --after assets/database_schema_after.json --type database --format json -o compatibility.json
# 3. Generate the rollback runbook from the plan
python3 scripts/rollback_generator.py --input migration_plan.json --format both -o rollback_runbook
What ships with it
14 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- assets/database_schema_after.json 9.1 KB
- assets/database_schema_before.json 5.6 KB
- assets/sample_database_migration.json 2.4 KB
- assets/sample_service_migration.json 4.8 KB
- expected_outputs/rollback_runbook.json 23 KB
- expected_outputs/rollback_runbook.txt 11 KB
- expected_outputs/sample_database_migration_plan.txt 4.6 KB
- expected_outputs/sample_service_migration_plan.json 8.9 KB
- expected_outputs/schema_compatibility_report.txt 4.6 KB
- README.md 12 KB
- references/data_reconciliation_strategies.md 46 KB
- scripts/compatibility_checker.py 42 KB runs code
- scripts/migration_planner.py 26 KB runs code
- scripts/rollback_generator.py 49 KB runs code
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.
- yesterday First seen · 434 lines · 58 tokens per session scan A ac791518648c
migration-architect is a skill published in the GitHub repository Morningstar202604/awesome-skillkit (1 stars, last pushed yesterday), licensed Apache-2.0. It adds 58 tokens to every session and 3,354 once invoked, about $0.0003 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 2026-08-31.
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