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/snk-devcenter/addon-studio/mapstructnpx skills add snk-devcenter/addon-studio --skill mapstructgit clone --depth 1 https://github.com/snk-devcenter/addon-studioWhat 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 | $0.00169 | $0.03803 |
| Opus 5 | $0.00084 | $0.01902 |
| Sonnet 5 | $0.00034 | $0.00761 |
| Haiku 4.5 | $0.00017 | $0.00380 |
Grade A, and why
mapstruct 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 — 321 lines — stays where its author put it; the contents beside it link to each section on GitHub.
MapStruct — Addon Studio 2.0
MapStruct = biblioteca padrao pra conversao DTO <-> entidade. Nunca faca mapper manual — use MapStruct.
"Dominio", nesta skill e nas demais do plugin, e a entidade
@JapeEntity. Os metodostoDomain/fromDomainconvertem DTO <-> entidade — nao existe um terceiro modelo entre eles. Criar POJO de dominio separado da entidade e decisao explicita do projeto (ver skillcontroller, "O que atravessa controller -> service"), nunca inferida a partir do nome dos metodos.
Referencia complementar: veja
dependency-injectionpra como mappers registram no container Guice.Escopo: arquivo define so regras genericas MapStruct. Regras negocio, filtros plataforma, convencoes dominio especificas ficam em override por projeto (fora desta skill).
1. Configuracao Global do Projeto
Projeto ja define flags globais compilacao no build.gradle:
dependencies {
implementation 'org.mapstruct:mapstruct:1.5.5.Final'
annotationProcessor 'org.mapstruct:mapstruct-processor:1.5.5.Final'
compileOnly 'org.projectlombok:lombok:1.18.30'
annotationProcessor 'org.projectlombok:lombok:1.18.30'
annotationProcessor 'org.projectlombok:lombok-mapstruct-binding:0.2.0'
}
tasks.withType(JavaCompile) {
options.compilerArgs += [
"-Amapstruct.defaultComponentModel=jakarta",
"-Amapstruct.unmappedTargetPolicy=IGNORE"
]
}
O que cada flag faz
| Flag | Valor | Efeito |
|---|---|---|
defaultComponentModel |
jakarta |
MapStruct gera implementacoes com @Named pra registro automatico Guice. NAO sobrescrever nos mappers. |
unmappedTargetPolicy |
IGNORE |
Campos target sem mapeamento explicito ignorados sem erro compilacao. |
lombok-mapstruct-binding |
0.2.0 |
Garante compatibilidade Lombok (getters/setters gerados) com MapStruct (annotation processor). |
ATENCAO — Nao confunda
componentModelcominjectionStrategy:
Parametro Configurado globalmente? Regra componentModelSIM — jakartanobuild.gradleNUNCA declare no @Mapperindividual. Declarar sobrescreve global.injectionStrategyNAO — sem flag global SEMPRE declare InjectionStrategy.CONSTRUCTORem mapperabstract class(com@Injectrepository) ou que useuses = {...}.repositories em abstract classN/A SEMPRE use field injection ( @Injectno campo). Limitacao MapStruct: processador nao gerasuper(...)com parametros construtor classe abstrata, impossibilita constructor injection pra repositorios.IMPORTANTE — componentModel:
componentModelNUNCA declare no@Mapperindividual. Ja global comojakartaembuild.gradle. Declarar — mesmo com mesmo valor"jakarta"— sobrescreve global, causa conflitos injecao ou falhas silenciosas no Guice.IMPORTANTE — injectionStrategy:
injectionStrategyNAO global. Declare explicito comoInjectionStrategy.CONSTRUCTORem mapper que:
abstract classcom@Inject(repositorios ou deps), OU- use
uses = {...}com componentes externos.Omitir = field injection Guice sem garantia ordem inicializacao.
What ships with it
2 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.
- yesterday First seen · 321 lines · 0 tokens per session scan A 639a708e1443
mapstruct is a skill published in the GitHub repository snk-devcenter/addon-studio (5 stars, last pushed yesterday), licensed MIT. It adds 169 tokens to every session and 3,803 once invoked, about $0.0008 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
systematic-debugging
Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.
next-cache-components-adoption
Turn on Cache Components in a Next.js app and resolve the blocking routes it surfaces. Use when the user wants to enable, adopt, or migrate to Cache Components, flip the cacheComponents flag, work through a flood of blocking-prerender / instant validation errors, run the cache-components-instant-false codemod, or…
babysit-pr
Babysit a GitHub pull request after creation by continuously polling review comments, CI checks/workflow runs, and mergeability state until the PR is merged/closed or user help is required. Diagnose failures, retry likely flaky failures up to 3 times, auto-fix/push branch-related issues when appropriate, and keep…
imagegen
Generate or edit raster images when the task benefits from AI-created bitmap visuals such as photos, illustrations, textures, sprites, mockups, or transparent-background cutouts. Use when Codex should create a brand-new image, transform an existing image, or derive visual variants from references, and the output…
cpu-profile-analysis
Analyze V8/Chrome CPU profiles (.cpuprofile) and DevTools trace files (Trace-.json). Use when: profiling performance, investigating slow functions, comparing code paths, finding bottlenecks, analyzing timeToRequest, understanding call trees from sampling profiler data, analyzing layout/paint/rendering, investigating…
next-cache-components-optimizer
Drive a Next.js route to instant navigation by setting up an agentic loop, under Cache Components / PPR, on initial load (hard navigation) and client-side navigation (soft navigation). Encode the goal as a failing @next/playwright instant() e2e and work it to green, one verified route at a time; the shipped test then…