[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"skill-jetbrains-mps-aspect-accessories":3,"mdc-vzv9ya-key":35,"related-repo-jetbrains-mps-aspect-accessories":816,"related-org-jetbrains-mps-aspect-accessories":886},{"slug":4,"name":4,"fn":5,"description":6,"org":7,"tags":11,"stars":22,"repoUrl":23,"updatedAt":24,"license":25,"forks":26,"topics":27,"repo":30,"sourceUrl":33,"mdContent":34},"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},"jetbrains","JetBrains","https:\u002F\u002Fpexgzepcugksgbtrxkhf.supabase.co\u002Fstorage\u002Fv1\u002Fobject\u002Fpublic\u002Forg-logos\u002Fjetbrains.png",[12,16,19],{"name":13,"slug":14,"type":15},"Configuration","configuration","tag",{"name":17,"slug":18,"type":15},"Architecture","architecture",{"name":20,"slug":21,"type":15},"Engineering","engineering",1650,"https:\u002F\u002Fgithub.com\u002FJetBrains\u002FMPS","2026-07-17T06:06:57.311661",null,311,[28,29],"domain-specific-language","dsl",{"repoUrl":23,"stars":22,"forks":26,"topics":31,"description":32},[28,29],"JetBrains Meta programming System","https:\u002F\u002Fgithub.com\u002FJetBrains\u002FMPS\u002Ftree\u002FHEAD\u002Fplugins\u002Fmcp-tools\u002Fresources\u002Fjetbrains\u002Fmps\u002Fagents\u002Fmcp\u002Fskills\u002Fmps-aspect-accessories","---\nname: mps-aspect-accessories\ndescription: 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.\ntype: reference\n---\n\n# MPS Module and Model Dependencies, Accessory Models\n\nThis skill covers the *wiring* layer of an MPS language — the module descriptor (`.mpl`) and the per-model imports — and the special role of **accessory models** and **runtime solutions**.\n\n**Note**: accessory wiring does not introduce a new aspect model or stereotype; it edits the existing language descriptor and model imports. When you do need to create a new aspect or stereotyped model, see [aspect-model-stereotypes.md](..\u002Fmps-mcp-workflow\u002Freferences\u002Faspect-model-stereotypes.md) for the canonical aspect IDs and `@stereotype` values.\n\n## Critical Directives\n\n- **Prefer MCP wiring tools over hand-editing `.mpl` XML.** Hand-editing can silently corrupt the module descriptor. If you must hand-edit (e.g. for `accessoryModels`, which has no dedicated MCP tool), make a backup, edit only the targeted block, and rebuild the module immediately afterwards so MPS re-reads the descriptor.\n- **Don't hand-edit `languageVersions` \u002F `dependencyVersions`.** MPS maintains these. Use the MPS \"Update language\u002Fdependency versions\" action.\n- **Generator modules have their own dependency list.** Add target-language deps to the generator, not the parent language.\n- **Used languages auto-import** when nodes are inserted via `mps_mcp_insert_root_node_from_json`, `mps_mcp_update_node`. Manually add a used language only for hand-written code or implicit dependencies.\n- **A runtime solution holds the *stable* part of generation** (code that doesn't vary with the model). Generate thin code that calls it; don't regenerate it. No MCP tool wires the language's `\u003Cruntime>` block — see `references\u002Fruntime-solutions.md`.\n\n## Rule of Thumb — Dependency vs. Used Language\n\n- If a concept is **used in your language definition** → add a `usedLanguage`.\n- If a Java class is **referenced in hand-written code** → add a `dependency` with the right scope.\n\n## MCP Tools Quick Reference\n\n- Module-level: `mps_mcp_module_dependency`, `mps_mcp_get_project_structure`.\n- Model-level: `mps_mcp_model_dependency`, `mps_mcp_model_used_language` (kind = `language` or `devkit`).\n- Module creation: `mps_mcp_create_module(type=\"solution\", …)` for a runtime solution.\n\n## Common Workflow\n\n1. **Inspect** existing wiring: `mps_mcp_get_project_structure(startingPoint=\u003Cmodule>)` for the module descriptor, `mps_mcp_get_project_structure` for traversal.\n2. **Diagnose** the symptom against the pitfalls table (`references\u002Fpitfalls.md`).\n3. **Apply** the right MCP tool at the right layer (module vs. model vs. accessory).\n4. **Rebuild** the module so MPS re-reads the descriptor.\n\n## Related Skills\n\n- **`mps-language-inheritance`** — when you need the difference between `extendedLanguages` and `usedLanguages` in detail.\n- **`mps-aspect-generator`** — generator-module dependencies are managed separately from the parent language.\n- **`mps-language-aspects-overview`** — to know which aspects exist and where each one lives.\n\n## Reference Index\n\n- Open `references\u002Fmodule-level-deps.md` for the full list of `.mpl` declarations (dependencies, usedLanguages, usedDevKits, extendedLanguages, runtimeModules, generators, accessoryModels, version stamps), their scopes, and the `mps_mcp_module_dependency` scope-dispatch table.\n- Open `references\u002Fmodel-level-imports.md` for per-model `dependencies`, used languages, used devkits, and the auto-import behavior of node-insertion tools.\n- Open `references\u002Faccessory-models.md` when shipping a model that should be available to every consumer of the language without an explicit import — including the `.mpl` `\u003CaccessoryModels>` XML shape and the hand-edit caveat.\n- Open `references\u002Fruntime-solutions.md` for **runtime solutions** — shipping the Java that *generated* programs call at run time (the generator's *stable part*, as MPS source or a prebuilt JAR): the Java-facet settings, the language `\u003Cruntime>`-block wiring, jar-as-stubs (`java_classes` model root + facet `\u003Clibrary>`), the no-MCP-tool caveat, and the Kaja\u002FJavaKaja worked example.\n- Open `references\u002Fextends-vs-uses.md` for the semantic difference between `extendedLanguages` and `usedLanguages` with examples.\n- Open `references\u002Fpitfalls.md` when you need to diagnose a symptom (\"Cannot resolve concept X\", \"ClassNotFoundException\", version mismatch, generator can't find target-language concept, devkit changes not picked up).\n- Open `references\u002Fmodule-creation.md` for `mps_mcp_create_module` — supported types, language-only companions (`withGenerator`\u002F`withSandbox`\u002F`withRuntime`), and the `facets` policy.\n- Open `references\u002Fmodule-rename.md` for `mps_mcp_update_module` — what the rename cascades into, the \"generator modules are not renameable\" rule, and the `renameWarnings`\u002F`renameCriticalProblems` semantics.\n- Open `references\u002Fmodule-info-fields.md` for the shared info envelope returned by `mps_mcp_get_project_structure(startingPoint=\u003Cmodule>)` \u002F `mps_mcp_create_module` \u002F `mps_mcp_update_module` — `kind`, `facets`, `loadExtensions`, DevKit-only fields.\n",{"data":36,"body":38},{"name":4,"description":6,"type":37},"reference",{"type":39,"children":40},"root",[41,50,88,115,122,245,251,292,298,369,375,441,447,507,513],{"type":42,"tag":43,"props":44,"children":46},"element","h1",{"id":45},"mps-module-and-model-dependencies-accessory-models",[47],{"type":48,"value":49},"text","MPS Module and Model Dependencies, Accessory Models",{"type":42,"tag":51,"props":52,"children":53},"p",{},[54,56,62,64,71,73,79,81,86],{"type":48,"value":55},"This skill covers the ",{"type":42,"tag":57,"props":58,"children":59},"em",{},[60],{"type":48,"value":61},"wiring",{"type":48,"value":63}," layer of an MPS language — the module descriptor (",{"type":42,"tag":65,"props":66,"children":68},"code",{"className":67},[],[69],{"type":48,"value":70},".mpl",{"type":48,"value":72},") and the per-model imports — and the special role of ",{"type":42,"tag":74,"props":75,"children":76},"strong",{},[77],{"type":48,"value":78},"accessory models",{"type":48,"value":80}," and ",{"type":42,"tag":74,"props":82,"children":83},{},[84],{"type":48,"value":85},"runtime solutions",{"type":48,"value":87},".",{"type":42,"tag":51,"props":89,"children":90},{},[91,96,98,105,107,113],{"type":42,"tag":74,"props":92,"children":93},{},[94],{"type":48,"value":95},"Note",{"type":48,"value":97},": accessory wiring does not introduce a new aspect model or stereotype; it edits the existing language descriptor and model imports. When you do need to create a new aspect or stereotyped model, see ",{"type":42,"tag":99,"props":100,"children":102},"a",{"href":101},"..\u002Fmps-mcp-workflow\u002Freferences\u002Faspect-model-stereotypes.md",[103],{"type":48,"value":104},"aspect-model-stereotypes.md",{"type":48,"value":106}," for the canonical aspect IDs and ",{"type":42,"tag":65,"props":108,"children":110},{"className":109},[],[111],{"type":48,"value":112},"@stereotype",{"type":48,"value":114}," values.",{"type":42,"tag":116,"props":117,"children":119},"h2",{"id":118},"critical-directives",[120],{"type":48,"value":121},"Critical Directives",{"type":42,"tag":123,"props":124,"children":125},"ul",{},[126,152,177,187,213],{"type":42,"tag":127,"props":128,"children":129},"li",{},[130,142,144,150],{"type":42,"tag":74,"props":131,"children":132},{},[133,135,140],{"type":48,"value":134},"Prefer MCP wiring tools over hand-editing ",{"type":42,"tag":65,"props":136,"children":138},{"className":137},[],[139],{"type":48,"value":70},{"type":48,"value":141}," XML.",{"type":48,"value":143}," Hand-editing can silently corrupt the module descriptor. If you must hand-edit (e.g. for ",{"type":42,"tag":65,"props":145,"children":147},{"className":146},[],[148],{"type":48,"value":149},"accessoryModels",{"type":48,"value":151},", which has no dedicated MCP tool), make a backup, edit only the targeted block, and rebuild the module immediately afterwards so MPS re-reads the descriptor.",{"type":42,"tag":127,"props":153,"children":154},{},[155,175],{"type":42,"tag":74,"props":156,"children":157},{},[158,160,166,168,174],{"type":48,"value":159},"Don't hand-edit ",{"type":42,"tag":65,"props":161,"children":163},{"className":162},[],[164],{"type":48,"value":165},"languageVersions",{"type":48,"value":167}," \u002F ",{"type":42,"tag":65,"props":169,"children":171},{"className":170},[],[172],{"type":48,"value":173},"dependencyVersions",{"type":48,"value":87},{"type":48,"value":176}," MPS maintains these. Use the MPS \"Update language\u002Fdependency versions\" action.",{"type":42,"tag":127,"props":178,"children":179},{},[180,185],{"type":42,"tag":74,"props":181,"children":182},{},[183],{"type":48,"value":184},"Generator modules have their own dependency list.",{"type":48,"value":186}," Add target-language deps to the generator, not the parent language.",{"type":42,"tag":127,"props":188,"children":189},{},[190,195,197,203,205,211],{"type":42,"tag":74,"props":191,"children":192},{},[193],{"type":48,"value":194},"Used languages auto-import",{"type":48,"value":196}," when nodes are inserted via ",{"type":42,"tag":65,"props":198,"children":200},{"className":199},[],[201],{"type":48,"value":202},"mps_mcp_insert_root_node_from_json",{"type":48,"value":204},", ",{"type":42,"tag":65,"props":206,"children":208},{"className":207},[],[209],{"type":48,"value":210},"mps_mcp_update_node",{"type":48,"value":212},". Manually add a used language only for hand-written code or implicit dependencies.",{"type":42,"tag":127,"props":214,"children":215},{},[216,228,230,236,238,244],{"type":42,"tag":74,"props":217,"children":218},{},[219,221,226],{"type":48,"value":220},"A runtime solution holds the ",{"type":42,"tag":57,"props":222,"children":223},{},[224],{"type":48,"value":225},"stable",{"type":48,"value":227}," part of generation",{"type":48,"value":229}," (code that doesn't vary with the model). Generate thin code that calls it; don't regenerate it. No MCP tool wires the language's ",{"type":42,"tag":65,"props":231,"children":233},{"className":232},[],[234],{"type":48,"value":235},"\u003Cruntime>",{"type":48,"value":237}," block — see ",{"type":42,"tag":65,"props":239,"children":241},{"className":240},[],[242],{"type":48,"value":243},"references\u002Fruntime-solutions.md",{"type":48,"value":87},{"type":42,"tag":116,"props":246,"children":248},{"id":247},"rule-of-thumb-dependency-vs-used-language",[249],{"type":48,"value":250},"Rule of Thumb — Dependency vs. Used Language",{"type":42,"tag":123,"props":252,"children":253},{},[254,273],{"type":42,"tag":127,"props":255,"children":256},{},[257,259,264,266,272],{"type":48,"value":258},"If a concept is ",{"type":42,"tag":74,"props":260,"children":261},{},[262],{"type":48,"value":263},"used in your language definition",{"type":48,"value":265}," → add a ",{"type":42,"tag":65,"props":267,"children":269},{"className":268},[],[270],{"type":48,"value":271},"usedLanguage",{"type":48,"value":87},{"type":42,"tag":127,"props":274,"children":275},{},[276,278,283,284,290],{"type":48,"value":277},"If a Java class is ",{"type":42,"tag":74,"props":279,"children":280},{},[281],{"type":48,"value":282},"referenced in hand-written code",{"type":48,"value":265},{"type":42,"tag":65,"props":285,"children":287},{"className":286},[],[288],{"type":48,"value":289},"dependency",{"type":48,"value":291}," with the right scope.",{"type":42,"tag":116,"props":293,"children":295},{"id":294},"mcp-tools-quick-reference",[296],{"type":48,"value":297},"MCP Tools Quick Reference",{"type":42,"tag":123,"props":299,"children":300},{},[301,320,356],{"type":42,"tag":127,"props":302,"children":303},{},[304,306,312,313,319],{"type":48,"value":305},"Module-level: ",{"type":42,"tag":65,"props":307,"children":309},{"className":308},[],[310],{"type":48,"value":311},"mps_mcp_module_dependency",{"type":48,"value":204},{"type":42,"tag":65,"props":314,"children":316},{"className":315},[],[317],{"type":48,"value":318},"mps_mcp_get_project_structure",{"type":48,"value":87},{"type":42,"tag":127,"props":321,"children":322},{},[323,325,331,332,338,340,346,348,354],{"type":48,"value":324},"Model-level: ",{"type":42,"tag":65,"props":326,"children":328},{"className":327},[],[329],{"type":48,"value":330},"mps_mcp_model_dependency",{"type":48,"value":204},{"type":42,"tag":65,"props":333,"children":335},{"className":334},[],[336],{"type":48,"value":337},"mps_mcp_model_used_language",{"type":48,"value":339}," (kind = ",{"type":42,"tag":65,"props":341,"children":343},{"className":342},[],[344],{"type":48,"value":345},"language",{"type":48,"value":347}," or ",{"type":42,"tag":65,"props":349,"children":351},{"className":350},[],[352],{"type":48,"value":353},"devkit",{"type":48,"value":355},").",{"type":42,"tag":127,"props":357,"children":358},{},[359,361,367],{"type":48,"value":360},"Module creation: ",{"type":42,"tag":65,"props":362,"children":364},{"className":363},[],[365],{"type":48,"value":366},"mps_mcp_create_module(type=\"solution\", …)",{"type":48,"value":368}," for a runtime solution.",{"type":42,"tag":116,"props":370,"children":372},{"id":371},"common-workflow",[373],{"type":48,"value":374},"Common Workflow",{"type":42,"tag":376,"props":377,"children":378},"ol",{},[379,404,421,431],{"type":42,"tag":127,"props":380,"children":381},{},[382,387,389,395,397,402],{"type":42,"tag":74,"props":383,"children":384},{},[385],{"type":48,"value":386},"Inspect",{"type":48,"value":388}," existing wiring: ",{"type":42,"tag":65,"props":390,"children":392},{"className":391},[],[393],{"type":48,"value":394},"mps_mcp_get_project_structure(startingPoint=\u003Cmodule>)",{"type":48,"value":396}," for the module descriptor, ",{"type":42,"tag":65,"props":398,"children":400},{"className":399},[],[401],{"type":48,"value":318},{"type":48,"value":403}," for traversal.",{"type":42,"tag":127,"props":405,"children":406},{},[407,412,414,420],{"type":42,"tag":74,"props":408,"children":409},{},[410],{"type":48,"value":411},"Diagnose",{"type":48,"value":413}," the symptom against the pitfalls table (",{"type":42,"tag":65,"props":415,"children":417},{"className":416},[],[418],{"type":48,"value":419},"references\u002Fpitfalls.md",{"type":48,"value":355},{"type":42,"tag":127,"props":422,"children":423},{},[424,429],{"type":42,"tag":74,"props":425,"children":426},{},[427],{"type":48,"value":428},"Apply",{"type":48,"value":430}," the right MCP tool at the right layer (module vs. model vs. accessory).",{"type":42,"tag":127,"props":432,"children":433},{},[434,439],{"type":42,"tag":74,"props":435,"children":436},{},[437],{"type":48,"value":438},"Rebuild",{"type":48,"value":440}," the module so MPS re-reads the descriptor.",{"type":42,"tag":116,"props":442,"children":444},{"id":443},"related-skills",[445],{"type":48,"value":446},"Related Skills",{"type":42,"tag":123,"props":448,"children":449},{},[450,479,493],{"type":42,"tag":127,"props":451,"children":452},{},[453,462,464,470,471,477],{"type":42,"tag":74,"props":454,"children":455},{},[456],{"type":42,"tag":65,"props":457,"children":459},{"className":458},[],[460],{"type":48,"value":461},"mps-language-inheritance",{"type":48,"value":463}," — when you need the difference between ",{"type":42,"tag":65,"props":465,"children":467},{"className":466},[],[468],{"type":48,"value":469},"extendedLanguages",{"type":48,"value":80},{"type":42,"tag":65,"props":472,"children":474},{"className":473},[],[475],{"type":48,"value":476},"usedLanguages",{"type":48,"value":478}," in detail.",{"type":42,"tag":127,"props":480,"children":481},{},[482,491],{"type":42,"tag":74,"props":483,"children":484},{},[485],{"type":42,"tag":65,"props":486,"children":488},{"className":487},[],[489],{"type":48,"value":490},"mps-aspect-generator",{"type":48,"value":492}," — generator-module dependencies are managed separately from the parent language.",{"type":42,"tag":127,"props":494,"children":495},{},[496,505],{"type":42,"tag":74,"props":497,"children":498},{},[499],{"type":42,"tag":65,"props":500,"children":502},{"className":501},[],[503],{"type":48,"value":504},"mps-language-aspects-overview",{"type":48,"value":506}," — to know which aspects exist and where each one lives.",{"type":42,"tag":116,"props":508,"children":510},{"id":509},"reference-index",[511],{"type":48,"value":512},"Reference Index",{"type":42,"tag":123,"props":514,"children":515},{},[516,543,563,590,644,669,680,730,764],{"type":42,"tag":127,"props":517,"children":518},{},[519,521,527,529,534,536,541],{"type":48,"value":520},"Open ",{"type":42,"tag":65,"props":522,"children":524},{"className":523},[],[525],{"type":48,"value":526},"references\u002Fmodule-level-deps.md",{"type":48,"value":528}," for the full list of ",{"type":42,"tag":65,"props":530,"children":532},{"className":531},[],[533],{"type":48,"value":70},{"type":48,"value":535}," declarations (dependencies, usedLanguages, usedDevKits, extendedLanguages, runtimeModules, generators, accessoryModels, version stamps), their scopes, and the ",{"type":42,"tag":65,"props":537,"children":539},{"className":538},[],[540],{"type":48,"value":311},{"type":48,"value":542}," scope-dispatch table.",{"type":42,"tag":127,"props":544,"children":545},{},[546,547,553,555,561],{"type":48,"value":520},{"type":42,"tag":65,"props":548,"children":550},{"className":549},[],[551],{"type":48,"value":552},"references\u002Fmodel-level-imports.md",{"type":48,"value":554}," for per-model ",{"type":42,"tag":65,"props":556,"children":558},{"className":557},[],[559],{"type":48,"value":560},"dependencies",{"type":48,"value":562},", used languages, used devkits, and the auto-import behavior of node-insertion tools.",{"type":42,"tag":127,"props":564,"children":565},{},[566,567,573,575,580,582,588],{"type":48,"value":520},{"type":42,"tag":65,"props":568,"children":570},{"className":569},[],[571],{"type":48,"value":572},"references\u002Faccessory-models.md",{"type":48,"value":574}," when shipping a model that should be available to every consumer of the language without an explicit import — including the ",{"type":42,"tag":65,"props":576,"children":578},{"className":577},[],[579],{"type":48,"value":70},{"type":48,"value":581}," ",{"type":42,"tag":65,"props":583,"children":585},{"className":584},[],[586],{"type":48,"value":587},"\u003CaccessoryModels>",{"type":48,"value":589}," XML shape and the hand-edit caveat.",{"type":42,"tag":127,"props":591,"children":592},{},[593,594,599,601,605,607,612,614,619,621,626,628,634,636,642],{"type":48,"value":520},{"type":42,"tag":65,"props":595,"children":597},{"className":596},[],[598],{"type":48,"value":243},{"type":48,"value":600}," for ",{"type":42,"tag":74,"props":602,"children":603},{},[604],{"type":48,"value":85},{"type":48,"value":606}," — shipping the Java that ",{"type":42,"tag":57,"props":608,"children":609},{},[610],{"type":48,"value":611},"generated",{"type":48,"value":613}," programs call at run time (the generator's ",{"type":42,"tag":57,"props":615,"children":616},{},[617],{"type":48,"value":618},"stable part",{"type":48,"value":620},", as MPS source or a prebuilt JAR): the Java-facet settings, the language ",{"type":42,"tag":65,"props":622,"children":624},{"className":623},[],[625],{"type":48,"value":235},{"type":48,"value":627},"-block wiring, jar-as-stubs (",{"type":42,"tag":65,"props":629,"children":631},{"className":630},[],[632],{"type":48,"value":633},"java_classes",{"type":48,"value":635}," model root + facet ",{"type":42,"tag":65,"props":637,"children":639},{"className":638},[],[640],{"type":48,"value":641},"\u003Clibrary>",{"type":48,"value":643},"), the no-MCP-tool caveat, and the Kaja\u002FJavaKaja worked example.",{"type":42,"tag":127,"props":645,"children":646},{},[647,648,654,656,661,662,667],{"type":48,"value":520},{"type":42,"tag":65,"props":649,"children":651},{"className":650},[],[652],{"type":48,"value":653},"references\u002Fextends-vs-uses.md",{"type":48,"value":655}," for the semantic difference between ",{"type":42,"tag":65,"props":657,"children":659},{"className":658},[],[660],{"type":48,"value":469},{"type":48,"value":80},{"type":42,"tag":65,"props":663,"children":665},{"className":664},[],[666],{"type":48,"value":476},{"type":48,"value":668}," with examples.",{"type":42,"tag":127,"props":670,"children":671},{},[672,673,678],{"type":48,"value":520},{"type":42,"tag":65,"props":674,"children":676},{"className":675},[],[677],{"type":48,"value":419},{"type":48,"value":679}," when you need to diagnose a symptom (\"Cannot resolve concept X\", \"ClassNotFoundException\", version mismatch, generator can't find target-language concept, devkit changes not picked up).",{"type":42,"tag":127,"props":681,"children":682},{},[683,684,690,691,697,699,705,707,713,714,720,722,728],{"type":48,"value":520},{"type":42,"tag":65,"props":685,"children":687},{"className":686},[],[688],{"type":48,"value":689},"references\u002Fmodule-creation.md",{"type":48,"value":600},{"type":42,"tag":65,"props":692,"children":694},{"className":693},[],[695],{"type":48,"value":696},"mps_mcp_create_module",{"type":48,"value":698}," — supported types, language-only companions (",{"type":42,"tag":65,"props":700,"children":702},{"className":701},[],[703],{"type":48,"value":704},"withGenerator",{"type":48,"value":706},"\u002F",{"type":42,"tag":65,"props":708,"children":710},{"className":709},[],[711],{"type":48,"value":712},"withSandbox",{"type":48,"value":706},{"type":42,"tag":65,"props":715,"children":717},{"className":716},[],[718],{"type":48,"value":719},"withRuntime",{"type":48,"value":721},"), and the ",{"type":42,"tag":65,"props":723,"children":725},{"className":724},[],[726],{"type":48,"value":727},"facets",{"type":48,"value":729}," policy.",{"type":42,"tag":127,"props":731,"children":732},{},[733,734,740,741,747,749,755,756,762],{"type":48,"value":520},{"type":42,"tag":65,"props":735,"children":737},{"className":736},[],[738],{"type":48,"value":739},"references\u002Fmodule-rename.md",{"type":48,"value":600},{"type":42,"tag":65,"props":742,"children":744},{"className":743},[],[745],{"type":48,"value":746},"mps_mcp_update_module",{"type":48,"value":748}," — what the rename cascades into, the \"generator modules are not renameable\" rule, and the ",{"type":42,"tag":65,"props":750,"children":752},{"className":751},[],[753],{"type":48,"value":754},"renameWarnings",{"type":48,"value":706},{"type":42,"tag":65,"props":757,"children":759},{"className":758},[],[760],{"type":48,"value":761},"renameCriticalProblems",{"type":48,"value":763}," semantics.",{"type":42,"tag":127,"props":765,"children":766},{},[767,768,774,776,781,782,787,788,793,795,801,802,807,808,814],{"type":48,"value":520},{"type":42,"tag":65,"props":769,"children":771},{"className":770},[],[772],{"type":48,"value":773},"references\u002Fmodule-info-fields.md",{"type":48,"value":775}," for the shared info envelope returned by ",{"type":42,"tag":65,"props":777,"children":779},{"className":778},[],[780],{"type":48,"value":394},{"type":48,"value":167},{"type":42,"tag":65,"props":783,"children":785},{"className":784},[],[786],{"type":48,"value":696},{"type":48,"value":167},{"type":42,"tag":65,"props":789,"children":791},{"className":790},[],[792],{"type":48,"value":746},{"type":48,"value":794}," — ",{"type":42,"tag":65,"props":796,"children":798},{"className":797},[],[799],{"type":48,"value":800},"kind",{"type":48,"value":204},{"type":42,"tag":65,"props":803,"children":805},{"className":804},[],[806],{"type":48,"value":727},{"type":48,"value":204},{"type":42,"tag":65,"props":809,"children":811},{"className":810},[],[812],{"type":48,"value":813},"loadExtensions",{"type":48,"value":815},", DevKit-only fields.",{"items":817,"total":885},[818,824,833,842,853,863,876],{"slug":4,"name":4,"fn":5,"description":6,"org":819,"tags":820,"stars":22,"repoUrl":23,"updatedAt":24},{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[821,822,823],{"name":17,"slug":18,"type":15},{"name":13,"slug":14,"type":15},{"name":20,"slug":21,"type":15},{"slug":825,"name":825,"fn":826,"description":827,"org":828,"tags":829,"stars":22,"repoUrl":23,"updatedAt":832},"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},[830,831],{"name":17,"slug":18,"type":15},{"name":20,"slug":21,"type":15},"2026-07-17T06:04:48.066901",{"slug":834,"name":834,"fn":835,"description":836,"org":837,"tags":838,"stars":22,"repoUrl":23,"updatedAt":841},"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},[839,840],{"name":17,"slug":18,"type":15},{"name":20,"slug":21,"type":15},"2026-07-13T06:45:21.757084",{"slug":843,"name":843,"fn":844,"description":845,"org":846,"tags":847,"stars":22,"repoUrl":23,"updatedAt":852},"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},[848,849],{"name":17,"slug":18,"type":15},{"name":850,"slug":851,"type":15},"Code Analysis","code-analysis","2026-07-23T05:41:33.639365",{"slug":854,"name":854,"fn":855,"description":856,"org":857,"tags":858,"stars":22,"repoUrl":23,"updatedAt":862},"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},[859],{"name":860,"slug":861,"type":15},"Data Analysis","data-analysis","2026-07-13T06:45:19.114674",{"slug":864,"name":864,"fn":865,"description":866,"org":867,"tags":868,"stars":22,"repoUrl":23,"updatedAt":875},"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},[869,872],{"name":870,"slug":871,"type":15},"Design","design",{"name":873,"slug":874,"type":15},"UI Components","ui-components","2026-07-23T05:41:56.638151",{"slug":877,"name":877,"fn":878,"description":879,"org":880,"tags":881,"stars":22,"repoUrl":23,"updatedAt":884},"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},[882,883],{"name":20,"slug":21,"type":15},{"name":873,"slug":874,"type":15},"2026-07-23T05:41:49.666535",31,{"items":887,"total":973},[888,894,899,904,909,913,918,923,932,941,950,963],{"slug":4,"name":4,"fn":5,"description":6,"org":889,"tags":890,"stars":22,"repoUrl":23,"updatedAt":24},{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[891,892,893],{"name":17,"slug":18,"type":15},{"name":13,"slug":14,"type":15},{"name":20,"slug":21,"type":15},{"slug":825,"name":825,"fn":826,"description":827,"org":895,"tags":896,"stars":22,"repoUrl":23,"updatedAt":832},{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[897,898],{"name":17,"slug":18,"type":15},{"name":20,"slug":21,"type":15},{"slug":834,"name":834,"fn":835,"description":836,"org":900,"tags":901,"stars":22,"repoUrl":23,"updatedAt":841},{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[902,903],{"name":17,"slug":18,"type":15},{"name":20,"slug":21,"type":15},{"slug":843,"name":843,"fn":844,"description":845,"org":905,"tags":906,"stars":22,"repoUrl":23,"updatedAt":852},{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[907,908],{"name":17,"slug":18,"type":15},{"name":850,"slug":851,"type":15},{"slug":854,"name":854,"fn":855,"description":856,"org":910,"tags":911,"stars":22,"repoUrl":23,"updatedAt":862},{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[912],{"name":860,"slug":861,"type":15},{"slug":864,"name":864,"fn":865,"description":866,"org":914,"tags":915,"stars":22,"repoUrl":23,"updatedAt":875},{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[916,917],{"name":870,"slug":871,"type":15},{"name":873,"slug":874,"type":15},{"slug":877,"name":877,"fn":878,"description":879,"org":919,"tags":920,"stars":22,"repoUrl":23,"updatedAt":884},{"slug":8,"name":9,"logoUrl":10,"githubOrg":9},[921,922],{"name":20,"slug":21,"type":15},{"name":873,"slug":874,"type":15},{"slug":924,"name":924,"fn":925,"description":926,"org":927,"tags":928,"stars":22,"repoUrl":23,"updatedAt":931},"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},[929,930],{"name":17,"slug":18,"type":15},{"name":20,"slug":21,"type":15},"2026-07-13T06:44:59.507855",{"slug":490,"name":490,"fn":933,"description":934,"org":935,"tags":936,"stars":22,"repoUrl":23,"updatedAt":940},"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},[937,938,939],{"name":17,"slug":18,"type":15},{"name":850,"slug":851,"type":15},{"name":20,"slug":21,"type":15},"2026-07-17T06:06:58.042999",{"slug":942,"name":942,"fn":943,"description":944,"org":945,"tags":946,"stars":22,"repoUrl":23,"updatedAt":949},"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},[947,948],{"name":17,"slug":18,"type":15},{"name":20,"slug":21,"type":15},"2026-07-23T05:41:48.692899",{"slug":951,"name":951,"fn":952,"description":953,"org":954,"tags":955,"stars":22,"repoUrl":23,"updatedAt":962},"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},[956,959],{"name":957,"slug":958,"type":15},"Debugging","debugging",{"name":960,"slug":961,"type":15},"Migration","migration","2026-07-13T06:45:20.372122",{"slug":964,"name":964,"fn":965,"description":966,"org":967,"tags":968,"stars":22,"repoUrl":23,"updatedAt":972},"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},[969],{"name":970,"slug":971,"type":15},"Data Modeling","data-modeling","2026-07-23T05:41:30.705975",188]