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 arconia-io/agent-skills --skill spring-boot-upgradegit clone --depth 1 https://github.com/arconia-io/agent-skillsWrote 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/arconia-io/agent-skills/spring-boot-upgrade)<a href="https://agentmods.dev/skills/arconia-io/agent-skills/spring-boot-upgrade"><img src="https://agentmods.dev/badge/skills/arconia-io/agent-skills/spring-boot-upgrade/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/arconia-io/agent-skills/spring-boot-upgrade"><img src="https://agentmods.dev/badge/skills/arconia-io/agent-skills/spring-boot-upgrade.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00091 | $0.00831 |
| Opus 5 | $0.00046 | $0.00415 |
| Sonnet 5 | $0.00018 | $0.00166 |
| Haiku 4.5 | $0.00009 | $0.00083 |
Grade A, and why
spring-boot-upgrade 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 10d 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 — 105 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Upgrade Frameworks and Build Tools
Use arconia update to upgrade frameworks and build tool wrappers. Each command
runs a tested OpenRewrite migration recipe that handles dependency bumps,
deprecated API replacements, configuration renames, and more.
Always commit your project to version control before running any upgrade so you can review the changes and revert if needed.
Available upgrade commands
| Command | What it upgrades | --to-version default |
|---|---|---|
arconia update spring-boot |
Spring Boot | 4.0 |
arconia update spring-ai |
Spring AI | 2.0 |
arconia update framework |
Arconia Framework | 0.25 |
arconia update gradle |
Gradle wrapper | (latest) |
arconia update maven |
Maven wrapper | (latest) |
Recommended workflow
Step 1: Preview changes with dry-run
Always preview before applying:
arconia update spring-boot --to-version=4.0 --dry-run
Review the output to understand what files will be modified.
Step 2: Apply the upgrade
arconia update spring-boot --to-version=4.0
Step 3: Verify the upgrade
arconia build
arconia test
If tests fail, review the changes in version control and fix any issues the automated migration could not handle.
Upgrade to a specific version
Use --to-version to target a specific release:
arconia update spring-boot --to-version=3.4
arconia update spring-ai --to-version=1.1
arconia update framework --to-version=0.24
Update build tool wrappers
Gradle and Maven wrapper updates do not take a --to-version flag — they
update to the latest version automatically:
arconia update gradle
arconia update maven
These update gradle/wrapper/gradle-wrapper.properties or
.mvn/wrapper/maven-wrapper.properties respectively.
Pass extra arguments to the build tool
arconia update spring-boot --to-version=4.0 -- --stacktrace
Gotchas
- OpenRewrite modifies files in place. Always commit before upgrading so you can
git diffthe changes and revert withgit checkout .if needed. - The
--dry-runflag previews changes without modifying files. Always use it first, especially for major version upgrades. - Migration recipes handle most changes automatically (dependency versions, renamed APIs, configuration properties) but some manual adjustments may be needed after major upgrades. Always run tests after applying.
- The
--to-versionflag is not available forarconia update gradleandarconia update maven— they always update to the latest version. - All upgrade commands use recipes from the Arconia Migrations project. For
custom or additional recipes, use
arconia rewrite runinstead.
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.
- 10d ago First seen · 105 lines · 91 tokens per session scan A 465c0ad00cdc
spring-boot-upgrade is a skill published in the GitHub repository arconia-io/agent-skills (2 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 91 tokens to every session and 831 once invoked, about $0.0005 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.
Other skills, from other repositories
creating-springboot-projects
Use when starting a new Spring Boot 4 project — scaffolding a service, REST API, or modular backend; picking an architecture (layered, package-by-module, modular-monolith, tomato, DDD-hexagonal); selecting Spring Boot 4 features; or applying the bundled templates and references in this skill. Not for migrating…
spring-data-jpa
Use when designing or implementing Spring Data JPA on Spring Boot 4 — repository boundaries, projections, query patterns, custom repositories, CQRS read models, entity relationships, or persistence performance fixes. Not for generic SQL help, database admin work, or project-wide migration (see the springboot-migration…
springboot-migration
Use when upgrading an existing Spring Boot application to Boot 4 — dependency transitions, starter renames, test-annotation migration (e.g. @MockBean → @MockitoBean), Jackson 3 issues, related Spring Modulith 2 or Testcontainers 2 upgrade work, or planning a phased migration. Not for greenfield project creation or…
create-spring-boot-project
Creates a new Spring Boot project by downloading it from start.spring.io using curl, then extracting it into the target directory. Use this when a user asks to create, generate, initialize, or scaffold a new Spring Boot project.
spring-boot
Spring Boot 3.x - Java framework for production-ready applications with dependency injection, REST APIs, data access, security, and actuator monitoring.
spring-boot-4-conventions
Spring Framework 7 / Spring Boot 4 idioms and defaults. Use when writing or reviewing controllers, services, configuration, HTTP clients, async/virtual-thread code, or anything touching Spring's programming model.