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 skills add a-pavithraa/springboot-skills-marketplace --skill springboot-migrationgit clone --depth 1 https://github.com/a-pavithraa/springboot-skills-marketplaceWrote 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/skills/a-pavithraa/springboot-skills-marketplace/springboot-migration)<a href="https://agentmods.dev/skills/a-pavithraa/springboot-skills-marketplace/springboot-migration"><img src="https://agentmods.dev/badge/skills/a-pavithraa/springboot-skills-marketplace/springboot-migration/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/a-pavithraa/springboot-skills-marketplace/springboot-migration"><img src="https://agentmods.dev/badge/skills/a-pavithraa/springboot-skills-marketplace/springboot-migration.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00077 | $0.00993 |
| Opus 5 | $0.00039 | $0.00496 |
| Sonnet 5 | $0.00015 | $0.00199 |
| Haiku 4.5 | $0.00008 | $0.00099 |
Grade A, and why
springboot-migration 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 11d 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.
How it starts
The opening of the file, as written. The whole thing — 136 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Spring Boot Migration
Purpose
Use this skill for phased upgrade work on existing Spring Boot applications. This skill adds value through the migration scanner, the Boot 4 / Modulith 2 / Testcontainers 2 reference guides, and a strict migration order that avoids mixing too many changes at once.
Critical rules
- Never migrate blindly. Scan the codebase first.
- Never apply every migration at once. Follow phased upgrades.
- Treat Spring Boot 4, Spring Modulith 2, and Testcontainers 2 as the intended target stack for this skill unless the user asks for a narrower target. Boot 4's Java baseline is 17; recommend Java 25 for new compile targets but do not force an upgrade past what the migration actually requires.
- Verify after each phase and stop when failures appear.
Workflow
Step 1: Scan the project
Use the migration scanner before planning or editing. It reads pom.xml, build.gradle, or build.gradle.kts (whichever the project has) plus Java sources, properties files, and Flyway migrations:
python3 "${CLAUDE_SKILL_DIR}/scripts/scan_migration_issues.py" /path/to/project
Use the scan output to identify:
- current Spring Boot version
- starter rename work
- annotation and import migrations
- configuration changes
- Spring Modulith compatibility
- Testcontainers compatibility
Step 2: Identify which migrations apply
Load only the references that match the codebase:
| Migration | Trigger | Read |
|---|---|---|
| Spring Boot 4.0 | Boot 3.x to 4.x upgrade | references/spring-boot-4-migration.md |
| Spring Modulith 2.0 | Existing Modulith 1.x usage | references/spring-modulith-2-migration.md |
| Testcontainers 2.x | Existing Testcontainers 1.x usage | references/testcontainers-2-migration.md |
| Cross-cutting scenarios and pitfalls | Mixed upgrade planning | references/migration-overview.md |
Step 3: Plan the migration in phases
Use the reference guides to plan and execute in this order.
Phase 1: Dependencies
What ships with it
5 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.
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.
- 11d ago First seen · 136 lines · 77 tokens per session scan A 696e6e1bbfa5
springboot-migration is a skill published in the GitHub repository a-pavithraa/springboot-skills-marketplace (75 stars, last pushed 16d ago), licensed MIT. It adds 77 tokens to every session and 993 once invoked, about $0.0004 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 2026-08-30.
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