[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"skill-jetbrains-spring-mvc-webflux-api-builder":3,"mdc-hwt3rc-key":36,"related-repo-jetbrains-spring-mvc-webflux-api-builder":611,"related-org-jetbrains-spring-mvc-webflux-api-builder":733},{"slug":4,"name":4,"fn":5,"description":6,"org":7,"tags":11,"stars":25,"repoUrl":26,"updatedAt":27,"license":28,"forks":29,"topics":30,"repo":31,"sourceUrl":34,"mdContent":35},"spring-mvc-webflux-api-builder","build Kotlin Spring REST APIs","Design and generate Kotlin Spring HTTP APIs with correct controller signatures, DTOs, validation, serialization assumptions, error handling, and web tests. Use when building or changing REST endpoints, choosing between MVC and WebFlux, modeling request and response payloads, standardizing error responses, or avoiding Kotlin-specific validation and Jackson mistakes.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},"jetbrains","JetBrains","https:\u002F\u002Fpexgzepcugksgbtrxkhf.supabase.co\u002Fstorage\u002Fv1\u002Fobject\u002Fpublic\u002Forg-logos\u002Fjetbrains.png",[12,16,19,22],{"name":13,"slug":14,"type":15},"Kotlin","kotlin","tag",{"name":17,"slug":18,"type":15},"Backend","backend",{"name":20,"slug":21,"type":15},"Spring","spring",{"name":23,"slug":24,"type":15},"API Development","api-development",252,"https:\u002F\u002Fgithub.com\u002FJetBrains\u002Fskills","2026-07-13T06:41:25.370094",null,17,[],{"repoUrl":26,"stars":25,"forks":29,"topics":32,"description":33},[],"Curated agent skills collection verified by JetBrains","https:\u002F\u002Fgithub.com\u002FJetBrains\u002Fskills\u002Ftree\u002FHEAD\u002Fspring-mvc-webflux-api-builder","---\nname: spring-mvc-webflux-api-builder\ndescription: Design and generate Kotlin Spring HTTP APIs with correct controller signatures, DTOs, validation, serialization assumptions, error handling, and web tests. Use when building or changing REST endpoints, choosing between MVC and WebFlux, modeling request and response payloads, standardizing error responses, or avoiding Kotlin-specific validation and Jackson mistakes.\nmetadata:\n  short-description: \"Generate correct Kotlin API layers\"\n  author: Kotlin\n  source: https:\u002F\u002Fgithub.com\u002FKotlin\u002Fkotlin-backend-agent-skills\u002Ftree\u002Fmain\u002F.agents\u002Fskills\u002Fspring-mvc-webflux-api-builder\n---\n\n# Spring MVC WebFlux API Builder\n\nSource mapping: Tier 1 critical skill derived from `Kotlin_Spring_Developer_Pipeline.md` (`SK-06`).\n\n## Mission\n\nProduce API code that is not only plausible but correct for the repository's actual Spring stack.\nGenerate endpoints, DTOs, validation, and test scaffolding as one coherent unit.\n\n## Decide The Stack First\n\n- Verify whether the module is Spring MVC or WebFlux.\n- Verify whether controllers are blocking, coroutine-based, or Reactor-based.\n- Verify the project's existing error format, serialization rules, and OpenAPI approach.\n- Reuse `project-context-ingestion` output if it already established these facts.\n\n## Design The Contract Before Writing Code\n\n- Define the endpoint path, method, authentication expectation, idempotency rule, and status codes.\n- Define request and response DTO boundaries. Do not expose entities directly.\n- Define the error model for validation failures, business conflicts, not found, and unexpected errors.\n- Define pagination, sorting, and correlation-id behavior if applicable.\n- Define whether null, missing, and defaulted fields have distinct semantics.\n\n## Generate In This Order\n\n1. Request and response DTOs.\n2. Validation annotations with correct Kotlin `@field:` use-site targets.\n3. Controller signature.\n4. Service interface or use-case boundary.\n5. Mapping or translation code between transport and domain models.\n6. Error handling via `@ControllerAdvice` or the project's equivalent.\n7. One focused web-layer test proving the contract.\n\n## Kotlin-Specific Rules\n\n- Use `@field:` targets for Jakarta Bean Validation annotations on constructor properties.\n- Be explicit about nullable versus required fields.\n- Treat `null` versus absent as a contract decision, especially for PATCH-like behavior.\n- Verify `jackson-module-kotlin` or equivalent serialization support before relying on Kotlin constructor defaults.\n- Prefer immutable DTOs with `val` properties unless the project clearly uses a different pattern.\n\n## MVC And WebFlux Rules\n\n- Do not mix MVC and WebFlux styles in the same generated endpoint unless the repository already does so intentionally.\n- For MVC, prefer ordinary return types and blocking service boundaries.\n- For WebFlux with coroutines, prefer `suspend` functions and `Flow\u003CT>` when streaming is required.\n- For Reactor-based code, follow the project's existing `Mono` and `Flux` conventions instead of inventing a hybrid style.\n\n## Advanced Contract Decisions\n\n- Prefer stable machine-readable error codes in the payload even when human-readable messages change.\n- Choose `400` versus `422` deliberately. Validation and malformed input are not the same as a domain rule violation.\n- For create endpoints, decide whether `201 Created` plus `Location` is part of the contract. Do not default to `200` just because it is easy.\n- For update endpoints, consider optimistic concurrency signals such as version fields or `ETag` and `If-Match` when concurrent edits matter.\n- For PATCH semantics, model three states explicitly when needed: absent, present with value, and present with null. Plain nullable Kotlin fields do not always represent all three.\n- Avoid exposing Spring-specific transport types like `Page` directly as the public API contract unless the service already standardized on that decision.\n- Be explicit about date-time, enum, and value-class serialization. Default serializer behavior often drifts across versions and clients.\n- In streaming endpoints, consider cancellation, backpressure, and partial-write behavior, not only the method signature.\n\n## Expert Heuristics\n\n- Design the error contract and validation contract before controller code. Retrofitting them later causes the most API churn.\n- Keep transport DTOs narrow and explicit. Reusing internal domain models usually saves time once and costs time forever.\n- If the service is public or long-lived, optimize for backward-compatible contract evolution: additive fields, stable codes, and deliberate deprecations.\n- Put correlation-id propagation in filters or interceptors when possible, not in every controller method.\n\n## Output Contract\n\nReturn either a ready-to-apply patch plan or concrete files or code blocks containing:\n\n- request DTO\n- response DTO\n- controller\n- service interface or use-case entry point\n- exception mapping or advice updates\n- web-layer test\n\nAlso return a short explanation of the API contract decisions that materially affect compatibility.\n\n## Guardrails\n\n- Do not leak internal exception details in API errors.\n- Do not use validation annotations on the wrong target in Kotlin.\n- Do not expose persistence entities on the wire.\n- Do not assume default HTTP codes without checking the contract.\n- Do not silently pick MVC when the module is WebFlux, or the reverse.\n\n## Verification Checklist\n\n- The endpoint compiles against the actual Spring stack in the repository.\n- Validation triggers for invalid input and returns the expected error shape.\n- Success and at least one failure path are covered by a web-layer test.\n- Serialization rules match the existing project conventions.\n\n## Quality Bar\n\nA good run of this skill gives the user an endpoint that compiles, validates, serializes, and fails consistently.\nA bad run mixes frameworks, gets Kotlin validation wrong, or invents an error model that the rest of the service does not use.\n",{"data":37,"body":41},{"name":4,"description":6,"metadata":38},{"short-description":39,"author":13,"source":40},"Generate correct Kotlin API layers","https:\u002F\u002Fgithub.com\u002FKotlin\u002Fkotlin-backend-agent-skills\u002Ftree\u002Fmain\u002F.agents\u002Fskills\u002Fspring-mvc-webflux-api-builder",{"type":42,"children":43},"root",[44,52,75,82,87,93,126,132,160,166,221,227,286,292,347,353,459,465,488,494,499,532,537,543,571,577,600,606],{"type":45,"tag":46,"props":47,"children":48},"element","h1",{"id":4},[49],{"type":50,"value":51},"text","Spring MVC WebFlux API Builder",{"type":45,"tag":53,"props":54,"children":55},"p",{},[56,58,65,67,73],{"type":50,"value":57},"Source mapping: Tier 1 critical skill derived from ",{"type":45,"tag":59,"props":60,"children":62},"code",{"className":61},[],[63],{"type":50,"value":64},"Kotlin_Spring_Developer_Pipeline.md",{"type":50,"value":66}," (",{"type":45,"tag":59,"props":68,"children":70},{"className":69},[],[71],{"type":50,"value":72},"SK-06",{"type":50,"value":74},").",{"type":45,"tag":76,"props":77,"children":79},"h2",{"id":78},"mission",[80],{"type":50,"value":81},"Mission",{"type":45,"tag":53,"props":83,"children":84},{},[85],{"type":50,"value":86},"Produce API code that is not only plausible but correct for the repository's actual Spring stack.\nGenerate endpoints, DTOs, validation, and test scaffolding as one coherent unit.",{"type":45,"tag":76,"props":88,"children":90},{"id":89},"decide-the-stack-first",[91],{"type":50,"value":92},"Decide The Stack First",{"type":45,"tag":94,"props":95,"children":96},"ul",{},[97,103,108,113],{"type":45,"tag":98,"props":99,"children":100},"li",{},[101],{"type":50,"value":102},"Verify whether the module is Spring MVC or WebFlux.",{"type":45,"tag":98,"props":104,"children":105},{},[106],{"type":50,"value":107},"Verify whether controllers are blocking, coroutine-based, or Reactor-based.",{"type":45,"tag":98,"props":109,"children":110},{},[111],{"type":50,"value":112},"Verify the project's existing error format, serialization rules, and OpenAPI approach.",{"type":45,"tag":98,"props":114,"children":115},{},[116,118,124],{"type":50,"value":117},"Reuse ",{"type":45,"tag":59,"props":119,"children":121},{"className":120},[],[122],{"type":50,"value":123},"project-context-ingestion",{"type":50,"value":125}," output if it already established these facts.",{"type":45,"tag":76,"props":127,"children":129},{"id":128},"design-the-contract-before-writing-code",[130],{"type":50,"value":131},"Design The Contract Before Writing Code",{"type":45,"tag":94,"props":133,"children":134},{},[135,140,145,150,155],{"type":45,"tag":98,"props":136,"children":137},{},[138],{"type":50,"value":139},"Define the endpoint path, method, authentication expectation, idempotency rule, and status codes.",{"type":45,"tag":98,"props":141,"children":142},{},[143],{"type":50,"value":144},"Define request and response DTO boundaries. Do not expose entities directly.",{"type":45,"tag":98,"props":146,"children":147},{},[148],{"type":50,"value":149},"Define the error model for validation failures, business conflicts, not found, and unexpected errors.",{"type":45,"tag":98,"props":151,"children":152},{},[153],{"type":50,"value":154},"Define pagination, sorting, and correlation-id behavior if applicable.",{"type":45,"tag":98,"props":156,"children":157},{},[158],{"type":50,"value":159},"Define whether null, missing, and defaulted fields have distinct semantics.",{"type":45,"tag":76,"props":161,"children":163},{"id":162},"generate-in-this-order",[164],{"type":50,"value":165},"Generate In This Order",{"type":45,"tag":167,"props":168,"children":169},"ol",{},[170,175,188,193,198,203,216],{"type":45,"tag":98,"props":171,"children":172},{},[173],{"type":50,"value":174},"Request and response DTOs.",{"type":45,"tag":98,"props":176,"children":177},{},[178,180,186],{"type":50,"value":179},"Validation annotations with correct Kotlin ",{"type":45,"tag":59,"props":181,"children":183},{"className":182},[],[184],{"type":50,"value":185},"@field:",{"type":50,"value":187}," use-site targets.",{"type":45,"tag":98,"props":189,"children":190},{},[191],{"type":50,"value":192},"Controller signature.",{"type":45,"tag":98,"props":194,"children":195},{},[196],{"type":50,"value":197},"Service interface or use-case boundary.",{"type":45,"tag":98,"props":199,"children":200},{},[201],{"type":50,"value":202},"Mapping or translation code between transport and domain models.",{"type":45,"tag":98,"props":204,"children":205},{},[206,208,214],{"type":50,"value":207},"Error handling via ",{"type":45,"tag":59,"props":209,"children":211},{"className":210},[],[212],{"type":50,"value":213},"@ControllerAdvice",{"type":50,"value":215}," or the project's equivalent.",{"type":45,"tag":98,"props":217,"children":218},{},[219],{"type":50,"value":220},"One focused web-layer test proving the contract.",{"type":45,"tag":76,"props":222,"children":224},{"id":223},"kotlin-specific-rules",[225],{"type":50,"value":226},"Kotlin-Specific Rules",{"type":45,"tag":94,"props":228,"children":229},{},[230,242,247,260,273],{"type":45,"tag":98,"props":231,"children":232},{},[233,235,240],{"type":50,"value":234},"Use ",{"type":45,"tag":59,"props":236,"children":238},{"className":237},[],[239],{"type":50,"value":185},{"type":50,"value":241}," targets for Jakarta Bean Validation annotations on constructor properties.",{"type":45,"tag":98,"props":243,"children":244},{},[245],{"type":50,"value":246},"Be explicit about nullable versus required fields.",{"type":45,"tag":98,"props":248,"children":249},{},[250,252,258],{"type":50,"value":251},"Treat ",{"type":45,"tag":59,"props":253,"children":255},{"className":254},[],[256],{"type":50,"value":257},"null",{"type":50,"value":259}," versus absent as a contract decision, especially for PATCH-like behavior.",{"type":45,"tag":98,"props":261,"children":262},{},[263,265,271],{"type":50,"value":264},"Verify ",{"type":45,"tag":59,"props":266,"children":268},{"className":267},[],[269],{"type":50,"value":270},"jackson-module-kotlin",{"type":50,"value":272}," or equivalent serialization support before relying on Kotlin constructor defaults.",{"type":45,"tag":98,"props":274,"children":275},{},[276,278,284],{"type":50,"value":277},"Prefer immutable DTOs with ",{"type":45,"tag":59,"props":279,"children":281},{"className":280},[],[282],{"type":50,"value":283},"val",{"type":50,"value":285}," properties unless the project clearly uses a different pattern.",{"type":45,"tag":76,"props":287,"children":289},{"id":288},"mvc-and-webflux-rules",[290],{"type":50,"value":291},"MVC And WebFlux Rules",{"type":45,"tag":94,"props":293,"children":294},{},[295,300,305,326],{"type":45,"tag":98,"props":296,"children":297},{},[298],{"type":50,"value":299},"Do not mix MVC and WebFlux styles in the same generated endpoint unless the repository already does so intentionally.",{"type":45,"tag":98,"props":301,"children":302},{},[303],{"type":50,"value":304},"For MVC, prefer ordinary return types and blocking service boundaries.",{"type":45,"tag":98,"props":306,"children":307},{},[308,310,316,318,324],{"type":50,"value":309},"For WebFlux with coroutines, prefer ",{"type":45,"tag":59,"props":311,"children":313},{"className":312},[],[314],{"type":50,"value":315},"suspend",{"type":50,"value":317}," functions and ",{"type":45,"tag":59,"props":319,"children":321},{"className":320},[],[322],{"type":50,"value":323},"Flow\u003CT>",{"type":50,"value":325}," when streaming is required.",{"type":45,"tag":98,"props":327,"children":328},{},[329,331,337,339,345],{"type":50,"value":330},"For Reactor-based code, follow the project's existing ",{"type":45,"tag":59,"props":332,"children":334},{"className":333},[],[335],{"type":50,"value":336},"Mono",{"type":50,"value":338}," and ",{"type":45,"tag":59,"props":340,"children":342},{"className":341},[],[343],{"type":50,"value":344},"Flux",{"type":50,"value":346}," conventions instead of inventing a hybrid style.",{"type":45,"tag":76,"props":348,"children":350},{"id":349},"advanced-contract-decisions",[351],{"type":50,"value":352},"Advanced Contract Decisions",{"type":45,"tag":94,"props":354,"children":355},{},[356,361,382,411,431,436,449,454],{"type":45,"tag":98,"props":357,"children":358},{},[359],{"type":50,"value":360},"Prefer stable machine-readable error codes in the payload even when human-readable messages change.",{"type":45,"tag":98,"props":362,"children":363},{},[364,366,372,374,380],{"type":50,"value":365},"Choose ",{"type":45,"tag":59,"props":367,"children":369},{"className":368},[],[370],{"type":50,"value":371},"400",{"type":50,"value":373}," versus ",{"type":45,"tag":59,"props":375,"children":377},{"className":376},[],[378],{"type":50,"value":379},"422",{"type":50,"value":381}," deliberately. Validation and malformed input are not the same as a domain rule violation.",{"type":45,"tag":98,"props":383,"children":384},{},[385,387,393,395,401,403,409],{"type":50,"value":386},"For create endpoints, decide whether ",{"type":45,"tag":59,"props":388,"children":390},{"className":389},[],[391],{"type":50,"value":392},"201 Created",{"type":50,"value":394}," plus ",{"type":45,"tag":59,"props":396,"children":398},{"className":397},[],[399],{"type":50,"value":400},"Location",{"type":50,"value":402}," is part of the contract. Do not default to ",{"type":45,"tag":59,"props":404,"children":406},{"className":405},[],[407],{"type":50,"value":408},"200",{"type":50,"value":410}," just because it is easy.",{"type":45,"tag":98,"props":412,"children":413},{},[414,416,422,423,429],{"type":50,"value":415},"For update endpoints, consider optimistic concurrency signals such as version fields or ",{"type":45,"tag":59,"props":417,"children":419},{"className":418},[],[420],{"type":50,"value":421},"ETag",{"type":50,"value":338},{"type":45,"tag":59,"props":424,"children":426},{"className":425},[],[427],{"type":50,"value":428},"If-Match",{"type":50,"value":430}," when concurrent edits matter.",{"type":45,"tag":98,"props":432,"children":433},{},[434],{"type":50,"value":435},"For PATCH semantics, model three states explicitly when needed: absent, present with value, and present with null. Plain nullable Kotlin fields do not always represent all three.",{"type":45,"tag":98,"props":437,"children":438},{},[439,441,447],{"type":50,"value":440},"Avoid exposing Spring-specific transport types like ",{"type":45,"tag":59,"props":442,"children":444},{"className":443},[],[445],{"type":50,"value":446},"Page",{"type":50,"value":448}," directly as the public API contract unless the service already standardized on that decision.",{"type":45,"tag":98,"props":450,"children":451},{},[452],{"type":50,"value":453},"Be explicit about date-time, enum, and value-class serialization. Default serializer behavior often drifts across versions and clients.",{"type":45,"tag":98,"props":455,"children":456},{},[457],{"type":50,"value":458},"In streaming endpoints, consider cancellation, backpressure, and partial-write behavior, not only the method signature.",{"type":45,"tag":76,"props":460,"children":462},{"id":461},"expert-heuristics",[463],{"type":50,"value":464},"Expert Heuristics",{"type":45,"tag":94,"props":466,"children":467},{},[468,473,478,483],{"type":45,"tag":98,"props":469,"children":470},{},[471],{"type":50,"value":472},"Design the error contract and validation contract before controller code. Retrofitting them later causes the most API churn.",{"type":45,"tag":98,"props":474,"children":475},{},[476],{"type":50,"value":477},"Keep transport DTOs narrow and explicit. Reusing internal domain models usually saves time once and costs time forever.",{"type":45,"tag":98,"props":479,"children":480},{},[481],{"type":50,"value":482},"If the service is public or long-lived, optimize for backward-compatible contract evolution: additive fields, stable codes, and deliberate deprecations.",{"type":45,"tag":98,"props":484,"children":485},{},[486],{"type":50,"value":487},"Put correlation-id propagation in filters or interceptors when possible, not in every controller method.",{"type":45,"tag":76,"props":489,"children":491},{"id":490},"output-contract",[492],{"type":50,"value":493},"Output Contract",{"type":45,"tag":53,"props":495,"children":496},{},[497],{"type":50,"value":498},"Return either a ready-to-apply patch plan or concrete files or code blocks containing:",{"type":45,"tag":94,"props":500,"children":501},{},[502,507,512,517,522,527],{"type":45,"tag":98,"props":503,"children":504},{},[505],{"type":50,"value":506},"request DTO",{"type":45,"tag":98,"props":508,"children":509},{},[510],{"type":50,"value":511},"response DTO",{"type":45,"tag":98,"props":513,"children":514},{},[515],{"type":50,"value":516},"controller",{"type":45,"tag":98,"props":518,"children":519},{},[520],{"type":50,"value":521},"service interface or use-case entry point",{"type":45,"tag":98,"props":523,"children":524},{},[525],{"type":50,"value":526},"exception mapping or advice updates",{"type":45,"tag":98,"props":528,"children":529},{},[530],{"type":50,"value":531},"web-layer test",{"type":45,"tag":53,"props":533,"children":534},{},[535],{"type":50,"value":536},"Also return a short explanation of the API contract decisions that materially affect compatibility.",{"type":45,"tag":76,"props":538,"children":540},{"id":539},"guardrails",[541],{"type":50,"value":542},"Guardrails",{"type":45,"tag":94,"props":544,"children":545},{},[546,551,556,561,566],{"type":45,"tag":98,"props":547,"children":548},{},[549],{"type":50,"value":550},"Do not leak internal exception details in API errors.",{"type":45,"tag":98,"props":552,"children":553},{},[554],{"type":50,"value":555},"Do not use validation annotations on the wrong target in Kotlin.",{"type":45,"tag":98,"props":557,"children":558},{},[559],{"type":50,"value":560},"Do not expose persistence entities on the wire.",{"type":45,"tag":98,"props":562,"children":563},{},[564],{"type":50,"value":565},"Do not assume default HTTP codes without checking the contract.",{"type":45,"tag":98,"props":567,"children":568},{},[569],{"type":50,"value":570},"Do not silently pick MVC when the module is WebFlux, or the reverse.",{"type":45,"tag":76,"props":572,"children":574},{"id":573},"verification-checklist",[575],{"type":50,"value":576},"Verification Checklist",{"type":45,"tag":94,"props":578,"children":579},{},[580,585,590,595],{"type":45,"tag":98,"props":581,"children":582},{},[583],{"type":50,"value":584},"The endpoint compiles against the actual Spring stack in the repository.",{"type":45,"tag":98,"props":586,"children":587},{},[588],{"type":50,"value":589},"Validation triggers for invalid input and returns the expected error shape.",{"type":45,"tag":98,"props":591,"children":592},{},[593],{"type":50,"value":594},"Success and at least one failure path are covered by a web-layer test.",{"type":45,"tag":98,"props":596,"children":597},{},[598],{"type":50,"value":599},"Serialization rules match the existing project conventions.",{"type":45,"tag":76,"props":601,"children":603},{"id":602},"quality-bar",[604],{"type":50,"value":605},"Quality Bar",{"type":45,"tag":53,"props":607,"children":608},{},[609],{"type":50,"value":610},"A good run of this skill gives the user an endpoint that compiles, validates, serializes, and fails consistently.\nA bad run mixes frameworks, gets Kotlin validation wrong, or invents an error model that the rest of the service does not use.",{"items":612,"total":732},[613,632,649,665,680,699,716],{"slug":614,"name":614,"fn":615,"description":616,"org":617,"tags":618,"stars":25,"repoUrl":26,"updatedAt":631},"algorithmic-art","create generative art with p5.js","Creating algorithmic art using p5.js with seeded randomness and interactive parameter exploration. Use this when users request creating art using code, generative art, algorithmic art, flow fields, or particle systems. Create original algorithmic art rather than copying existing artists' work to avoid copyright violations.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[619,622,625,628],{"name":620,"slug":621,"type":15},"Creative","creative",{"name":623,"slug":624,"type":15},"Generative Art","generative-art",{"name":626,"slug":627,"type":15},"Graphics","graphics",{"name":629,"slug":630,"type":15},"JavaScript","javascript","2026-07-13T06:41:35.540127",{"slug":633,"name":633,"fn":634,"description":635,"org":636,"tags":637,"stars":25,"repoUrl":26,"updatedAt":648},"antfu","configure JavaScript projects with Anthony Fu's tools","Anthony Fu's opinionated tooling and conventions for JavaScript\u002FTypeScript projects. Use when setting up new projects, configuring ESLint\u002FPrettier alternatives, monorepos, library publishing, or when the user mentions Anthony Fu's preferences.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[638,641,644,645],{"name":639,"slug":640,"type":15},"Best Practices","best-practices",{"name":642,"slug":643,"type":15},"Engineering","engineering",{"name":629,"slug":630,"type":15},{"name":646,"slug":647,"type":15},"TypeScript","typescript","2026-07-13T06:43:13.153309",{"slug":650,"name":650,"fn":651,"description":652,"org":653,"tags":654,"stars":25,"repoUrl":26,"updatedAt":664},"brand-guidelines","apply Anthropic brand guidelines","Applies Anthropic's official brand colors and typography to any sort of artifact that may benefit from having Anthropic's look-and-feel. Use it when brand colors or style guidelines, visual formatting, or company design standards apply.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[655,658,661],{"name":656,"slug":657,"type":15},"Branding","branding",{"name":659,"slug":660,"type":15},"Design","design",{"name":662,"slug":663,"type":15},"Typography","typography","2026-07-13T06:43:06.077629",{"slug":666,"name":666,"fn":667,"description":668,"org":669,"tags":670,"stars":25,"repoUrl":26,"updatedAt":679},"canvas-design","create visual art and design assets","Create beautiful visual art in .png and .pdf documents using design philosophy. You should use this skill when the user asks to create a poster, piece of art, design, or other static piece. Create original visual designs, never copying existing artists' work to avoid copyright violations.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[671,672,673,676],{"name":620,"slug":621,"type":15},{"name":659,"slug":660,"type":15},{"name":674,"slug":675,"type":15},"Images","images",{"name":677,"slug":678,"type":15},"PDF","pdf","2026-07-13T06:39:58.803113",{"slug":681,"name":681,"fn":682,"description":683,"org":684,"tags":685,"stars":25,"repoUrl":26,"updatedAt":698},"ci-cd-containerization-advisor","design CI\u002FCD pipelines for Kotlin applications","Design reproducible build, image, and deployment pipelines for Kotlin plus Spring applications, including CI verification, layered containers, rollout safety, and deployment-time migration coordination. Use when creating or improving Dockerfiles, CI workflows, image hardening, Kubernetes manifests, release gates, or deployment strategies for Spring Boot services, especially where build reproducibility and operational safety matter.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[686,689,692,695,696,697],{"name":687,"slug":688,"type":15},"CI\u002FCD","ci-cd",{"name":690,"slug":691,"type":15},"Containers","containers",{"name":693,"slug":694,"type":15},"Deployment","deployment",{"name":642,"slug":643,"type":15},{"name":13,"slug":14,"type":15},{"name":20,"slug":21,"type":15},"2026-07-13T06:41:47.83899",{"slug":700,"name":700,"fn":701,"description":702,"org":703,"tags":704,"stars":25,"repoUrl":26,"updatedAt":715},"cloudflare-deploy","deploy applications to Cloudflare","Deploy applications and infrastructure to Cloudflare using Workers, Pages, and related platform services. Use when the user asks to deploy, host, publish, or set up a project on Cloudflare.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[705,708,711,714],{"name":706,"slug":707,"type":15},"Cloudflare","cloudflare",{"name":709,"slug":710,"type":15},"Cloudflare Pages","cloudflare-pages",{"name":712,"slug":713,"type":15},"Cloudflare Workers","cloudflare-workers",{"name":693,"slug":694,"type":15},"2026-07-17T06:04:42.853896",{"slug":717,"name":717,"fn":718,"description":719,"org":720,"tags":721,"stars":25,"repoUrl":26,"updatedAt":731},"compose-ui-control","interact with Compose Desktop applications","Control a running Compose Desktop application via HTTP. Use when you need to interact with UI elements, click buttons, enter text, wait for elements to appear, or capture screenshots in a Compose Desktop app that has compose-ui-test-server enabled.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[722,725,728],{"name":723,"slug":724,"type":15},"Automation","automation",{"name":726,"slug":727,"type":15},"Desktop","desktop",{"name":729,"slug":730,"type":15},"UI Components","ui-components","2026-07-13T06:40:38.798626",128,{"items":734,"total":859},[735,751,760,769,780,790,799,808,817,827,836,849],{"slug":736,"name":736,"fn":737,"description":738,"org":739,"tags":740,"stars":748,"repoUrl":749,"updatedAt":750},"mps-aspect-accessories","configure JetBrains MPS module dependencies","Wire MPS module and model dependencies, used languages, used devkits, extended languages, runtime solutions, accessory models, and language\u002Fdependency versions. Use when adding\u002Fremoving module dependencies, importing languages or devkits into a model, declaring runtime solutions, or shipping accessory content visible to consumers without explicit import.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[741,744,747],{"name":742,"slug":743,"type":15},"Architecture","architecture",{"name":745,"slug":746,"type":15},"Configuration","configuration",{"name":642,"slug":643,"type":15},1650,"https:\u002F\u002Fgithub.com\u002FJetBrains\u002FMPS","2026-07-17T06:06:57.311661",{"slug":752,"name":752,"fn":753,"description":754,"org":755,"tags":756,"stars":748,"repoUrl":749,"updatedAt":759},"mps-aspect-actions","define and edit MPS node factories","Use when defining or editing MPS node factories (the \"actions\" aspect) — `NodeFactories` roots, per-concept `NodeFactory` setup functions that initialize a freshly created node and optionally copy data from a replaced `sampleNode`, plus the actions aspect's `CopyPasteHandlers` and `PasteWrappers` roots. Reach for this skill when a substitution, side transform, completion replacement, or `add new initialized(...)` should preserve fields from the node it is replacing, or when defaults set in a constructor are not enough.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[757,758],{"name":742,"slug":743,"type":15},{"name":642,"slug":643,"type":15},"2026-07-17T06:04:48.066901",{"slug":761,"name":761,"fn":762,"description":763,"org":764,"tags":765,"stars":748,"repoUrl":749,"updatedAt":768},"mps-aspect-behavior","define and edit MPS concept behavior","Use when defining or editing MPS `ConceptBehavior` — per-concept methods (non-virtual \u002F virtual \u002F abstract \u002F static \u002F virtual static), constructors, virtual dispatch (MRO), super and interface-default calls (`super\u003CInterface>.method`), overriding methods from `lang.core.behavior` interfaces such as `ScopeProvider.getScope` \u002F `INamedConcept.getName` \u002F `BaseConcept.getPresentation`, calling sibling methods (`LocalBehaviorMethodCall`) and behavior methods from other aspects via `node.method(...)`. Reach for this skill whenever the task involves authoring or modifying `\u003Clang>\u002FlanguageModels\u002Fbehavior.mps`.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[766,767],{"name":742,"slug":743,"type":15},{"name":642,"slug":643,"type":15},"2026-07-13T06:45:21.757084",{"slug":770,"name":770,"fn":771,"description":772,"org":773,"tags":774,"stars":748,"repoUrl":749,"updatedAt":779},"mps-aspect-constraints","define JetBrains MPS language constraints","Use when defining or editing MPS language constraints — property validators \u002F setters \u002F getters, referent search scopes (imperative or inherited via `ScopeProvider.getScope`), `referentSetHandler` side effects, default-scope blocks, `canBeChild` \u002F `canBeParent` \u002F `canBeAncestor` \u002F `canBeRoot` placement rules, `defaultConcreteConcept` for abstract concepts, `set \u003Cread-only>` and `{name}` aliasing, and scope helpers (`SimpleRoleScope`, `ListScope`, `CompositeScope`, `HidingByNameScope`). Reach for this skill whenever the task involves authoring or modifying `\u003Clang>\u002FlanguageModels\u002Fconstraints.mps`.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[775,776],{"name":742,"slug":743,"type":15},{"name":777,"slug":778,"type":15},"Code Analysis","code-analysis","2026-07-23T05:41:33.639365",{"slug":781,"name":781,"fn":782,"description":783,"org":784,"tags":785,"stars":748,"repoUrl":749,"updatedAt":789},"mps-aspect-dataflow","define and debug MPS dataflow builders","Use when defining or debugging MPS dataflow builders for a concept — control\u002Fdata flow declarations that drive reachability analysis and variable-use checking. Covers DataFlowBuilderDeclaration, BuilderBlock, emit instructions (code for, jump, ifjump, label, read, write, ret, mayBeUnreachable), positions (AfterPosition, BeforePosition, LabelPosition), the jetbrains.mps.lang.dataFlow language, the NodeParameter implicit, BL+smodel usage inside builder bodies, and IBuilderMode for advanced analyses such as nullable\u002Fnon-null tracking.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[786],{"name":787,"slug":788,"type":15},"Data Analysis","data-analysis","2026-07-13T06:45:19.114674",{"slug":791,"name":791,"fn":792,"description":793,"org":794,"tags":795,"stars":748,"repoUrl":749,"updatedAt":798},"mps-aspect-editor","define MPS editor layouts","Use when creating or changing MPS editor definitions — the overall workflow from scaffolding a `ConceptEditorDeclaration` through componentizing reusable `EditorComponentDeclaration`s, refining cell models and cell layouts, applying style sheets and indent-layout style items, wiring smart references, leveraging inheritance via super-concepts and interfaces, inspecting (`print_node_json`, `show_node_representation`) and validating (`check_root_node_problems`). Covers `jetbrains.mps.lang.editor` cell models (`CellModel_RefNode`\u002F`CellModel_RefNodeList`\u002F`CellModel_RefCell`\u002F`CellModel_Property`\u002F`CellModel_Constant`), layout choices, and JSON blueprints for common editor shapes. For the non-layout side (action maps, keymaps, transformation\u002Fsubstitute menus) use `mps-aspect-editor-menus-and-keymaps`.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[796,797],{"name":659,"slug":660,"type":15},{"name":729,"slug":730,"type":15},"2026-07-23T05:41:56.638151",{"slug":800,"name":800,"fn":801,"description":802,"org":803,"tags":804,"stars":748,"repoUrl":749,"updatedAt":807},"mps-aspect-editor-menus-and-keymaps","author MPS editor menus and keymaps","Use when authoring the **non-layout** parts of the MPS editor aspect — what happens when the user types, presses a key, triggers completion, pastes, or invokes a context action. Covers action maps (`CellActionMapDeclaration`), cell keymaps (`CellKeyMapDeclaration`), transformation menus (`TransformationMenu_Default` \u002F `_Named` \u002F `_Contribution`), substitute menus (`SubstituteMenu_Default` \u002F `SubstituteMenu` \u002F contributions), side transforms (LEFT\u002FRIGHT), legacy cell menus, paste wrappers and copy-paste handlers (in the actions language), completion styling, reference presentation, two-step deletion, and the editor selection API. Trigger terms: `actionMap`, `keyMap`, `delete_action_id`, `transformationMenu`, `substituteMenu`, `Ctrl+Space`, `Ctrl+Alt+B`, side transform, paste wrapper, completion styling, `PasteWrappers`, `CopyPasteHandlers`. For the **layout** side (cells, layouts, style sheets) use `mps-aspect-editor` instead.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[805,806],{"name":642,"slug":643,"type":15},{"name":729,"slug":730,"type":15},"2026-07-23T05:41:49.666535",{"slug":809,"name":809,"fn":810,"description":811,"org":812,"tags":813,"stars":748,"repoUrl":749,"updatedAt":816},"mps-aspect-generation-plan","modify MPS generation plans","Use when defining or modifying an MPS generation plan — explicit ordering of generators, checkpoints for cross-model reference resolution, forks for parallel branches, IncludePlan composition, conditional PlanContribution activation, ParameterEquals\u002FConceptListSelector fork selectors, and InitModelAttributes for targetFacet routing. Apply when working with @genplan models, the jetbrains.mps.lang.generator.plan language, attaching plans via DevKits or the Custom generation facet, or debugging cross-model mapping label resolution.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[814,815],{"name":742,"slug":743,"type":15},{"name":642,"slug":643,"type":15},"2026-07-13T06:44:59.507855",{"slug":818,"name":818,"fn":819,"description":820,"org":821,"tags":822,"stars":748,"repoUrl":749,"updatedAt":826},"mps-aspect-generator","define JetBrains MPS generator rules","Use when defining or modifying MPS generators — author a generator module, add or edit root\u002Freduction\u002Fweaving\u002Fpattern mapping rules, attach template macros ($COPY_SRC, $LOOP, $IF, $PROPERTY, $REF, $SWITCH, $MAP_SRC, $WEAVE, $INSERT, $LABEL, $TRACE, $VAR), wire mapping labels, build template switches, write pre\u002Fpost mapping scripts, navigate `genContext`, or debug \"rule didn't fire\", missing references, empty output, infinite reduction loops, and generated-Java compile failures.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[823,824,825],{"name":742,"slug":743,"type":15},{"name":777,"slug":778,"type":15},{"name":642,"slug":643,"type":15},"2026-07-17T06:06:58.042999",{"slug":828,"name":828,"fn":829,"description":830,"org":831,"tags":832,"stars":748,"repoUrl":749,"updatedAt":835},"mps-aspect-intentions","define and edit MPS intentions","Use when defining or editing MPS intentions (the Alt+Enter context-action aspect) — adding `IntentionDeclaration` roots, parameterized or surround-with variants, description\u002FisApplicable\u002Fexecute blocks, child-filter functions, factory-initialized AST splicing, or debugging why an intention is not offered. Lives in the language's `intentions` model and uses `jetbrains.mps.lang.intentions`.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[833,834],{"name":742,"slug":743,"type":15},{"name":642,"slug":643,"type":15},"2026-07-23T05:41:48.692899",{"slug":837,"name":837,"fn":838,"description":839,"org":840,"tags":841,"stars":748,"repoUrl":749,"updatedAt":848},"mps-aspect-migrations","author and debug MPS migration scripts","Use when authoring or debugging MPS migration scripts that upgrade user models after a language definition changes — covers jetbrains.mps.lang.migration (MigrationScript class-based, PureMigrationScript declarative, MoveConcept\u002FMoveContainmentLink\u002FMoveReferenceLink\u002FMoveProperty, ordering via OrderDependency, data exchange via putData\u002FgetData, RefactoringLog, ConceptMigrationReference) and jetbrains.mps.lang.script Enhancement Scripts (MigrationScript with MigrationScriptPart_Instance, ExtractInterfaceMigration, FactoryMigrationScriptPart, CommentMigrationScriptPart) — when a model needs version-gated upgrade, concept rename or removal, link or property rename, instance-level transformation, or composition of migration steps.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[842,845],{"name":843,"slug":844,"type":15},"Debugging","debugging",{"name":846,"slug":847,"type":15},"Migration","migration","2026-07-13T06:45:20.372122",{"slug":850,"name":850,"fn":851,"description":852,"org":853,"tags":854,"stars":748,"repoUrl":749,"updatedAt":858},"mps-aspect-structure-concepts","define concepts in MPS structure aspect","Define concepts, interface concepts, enumerations, and constrained data types in an MPS language's `structure` aspect. Covers smart-reference detection, alias rules, cardinality, INamedConcept usage, bulk creation, and the full `mps_mcp_alter_structure` \u002F `mps_mcp_query_structure` reference. Use when authoring or modifying a language's structure model.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[855],{"name":856,"slug":857,"type":15},"Data Modeling","data-modeling","2026-07-23T05:41:30.705975",188]