[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"skill-jetbrains-webapp-testing":3,"mdc--2ub4ni-key":36,"related-repo-jetbrains-webapp-testing":697,"related-org-jetbrains-webapp-testing":821},{"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},"webapp-testing","test web applications with Playwright","Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.",{"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},"Playwright","playwright","tag",{"name":17,"slug":18,"type":15},"Testing","testing",{"name":20,"slug":21,"type":15},"Frontend","frontend",{"name":23,"slug":24,"type":15},"Debugging","debugging",252,"https:\u002F\u002Fgithub.com\u002FJetBrains\u002Fskills","2026-07-17T06:04:36.998161","Complete terms in LICENSE.txt",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\u002Fwebapp-testing","---\nname: webapp-testing\ndescription: Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.\nlicense: Complete terms in LICENSE.txt\nmetadata:\n  short-description: \"Test local web apps with Playwright\"\n  author: Anthropic\n  source: https:\u002F\u002Fgithub.com\u002Fanthropics\u002Fskills\u002Ftree\u002Fmain\u002Fskills\u002Fwebapp-testing\n---\n\n# Web Application Testing\n\nTo test local web applications, write native Python Playwright scripts.\n\n**Helper Scripts Available**:\n- `scripts\u002Fwith_server.py` - Manages server lifecycle (supports multiple servers)\n\n**Always run scripts with `--help` first** to see usage. DO NOT read the source until you try running the script first and find that a customized solution is abslutely necessary. These scripts can be very large and thus pollute your context window. They exist to be called directly as black-box scripts rather than ingested into your context window.\n\n## Decision Tree: Choosing Your Approach\n\n```\nUser task → Is it static HTML?\n    ├─ Yes → Read HTML file directly to identify selectors\n    │         ├─ Success → Write Playwright script using selectors\n    │         └─ Fails\u002FIncomplete → Treat as dynamic (below)\n    │\n    └─ No (dynamic webapp) → Is the server already running?\n        ├─ No → Run: python scripts\u002Fwith_server.py --help\n        │        Then use the helper + write simplified Playwright script\n        │\n        └─ Yes → Reconnaissance-then-action:\n            1. Navigate and wait for networkidle\n            2. Take screenshot or inspect DOM\n            3. Identify selectors from rendered state\n            4. Execute actions with discovered selectors\n```\n\n## Example: Using with_server.py\n\nTo start a server, run `--help` first, then use the helper:\n\n**Single server:**\n```bash\npython scripts\u002Fwith_server.py --server \"npm run dev\" --port 5173 -- python your_automation.py\n```\n\n**Multiple servers (e.g., backend + frontend):**\n```bash\npython scripts\u002Fwith_server.py \\\n  --server \"cd backend && python server.py\" --port 3000 \\\n  --server \"cd frontend && npm run dev\" --port 5173 \\\n  -- python your_automation.py\n```\n\nTo create an automation script, include only Playwright logic (servers are managed automatically):\n```python\nfrom playwright.sync_api import sync_playwright\n\nwith sync_playwright() as p:\n    browser = p.chromium.launch(headless=True) # Always launch chromium in headless mode\n    page = browser.new_page()\n    page.goto('http:\u002F\u002Flocalhost:5173') # Server already running and ready\n    page.wait_for_load_state('networkidle') # CRITICAL: Wait for JS to execute\n    # ... your automation logic\n    browser.close()\n```\n\n## Reconnaissance-Then-Action Pattern\n\n1. **Inspect rendered DOM**:\n   ```python\n   page.screenshot(path='\u002Ftmp\u002Finspect.png', full_page=True)\n   content = page.content()\n   page.locator('button').all()\n   ```\n\n2. **Identify selectors** from inspection results\n\n3. **Execute actions** using discovered selectors\n\n## Common Pitfall\n\n❌ **Don't** inspect the DOM before waiting for `networkidle` on dynamic apps\n✅ **Do** wait for `page.wait_for_load_state('networkidle')` before inspection\n\n## Best Practices\n\n- **Use bundled scripts as black boxes** - To accomplish a task, consider whether one of the scripts available in `scripts\u002F` can help. These scripts handle common, complex workflows reliably without cluttering the context window. Use `--help` to see usage, then invoke directly. \n- Use `sync_playwright()` for synchronous scripts\n- Always close the browser when done\n- Use descriptive selectors: `text=`, `role=`, CSS selectors, or IDs\n- Add appropriate waits: `page.wait_for_selector()` or `page.wait_for_timeout()`\n\n## Reference Files\n\n- **examples\u002F** - Examples showing common patterns:\n  - `element_discovery.py` - Discovering buttons, links, and inputs on a page\n  - `static_html_automation.py` - Using file:\u002F\u002F URLs for local HTML\n  - `console_logging.py` - Capturing console logs during automation\n",{"data":37,"body":42},{"name":4,"description":6,"license":28,"metadata":38},{"short-description":39,"author":40,"source":41},"Test local web apps with Playwright","Anthropic","https:\u002F\u002Fgithub.com\u002Fanthropics\u002Fskills\u002Ftree\u002Fmain\u002Fskills\u002Fwebapp-testing",{"type":43,"children":44},"root",[45,54,60,71,88,106,113,125,131,143,151,225,233,342,347,433,439,503,509,544,550,636,642,691],{"type":46,"tag":47,"props":48,"children":50},"element","h1",{"id":49},"web-application-testing",[51],{"type":52,"value":53},"text","Web Application Testing",{"type":46,"tag":55,"props":56,"children":57},"p",{},[58],{"type":52,"value":59},"To test local web applications, write native Python Playwright scripts.",{"type":46,"tag":55,"props":61,"children":62},{},[63,69],{"type":46,"tag":64,"props":65,"children":66},"strong",{},[67],{"type":52,"value":68},"Helper Scripts Available",{"type":52,"value":70},":",{"type":46,"tag":72,"props":73,"children":74},"ul",{},[75],{"type":46,"tag":76,"props":77,"children":78},"li",{},[79,86],{"type":46,"tag":80,"props":81,"children":83},"code",{"className":82},[],[84],{"type":52,"value":85},"scripts\u002Fwith_server.py",{"type":52,"value":87}," - Manages server lifecycle (supports multiple servers)",{"type":46,"tag":55,"props":89,"children":90},{},[91,104],{"type":46,"tag":64,"props":92,"children":93},{},[94,96,102],{"type":52,"value":95},"Always run scripts with ",{"type":46,"tag":80,"props":97,"children":99},{"className":98},[],[100],{"type":52,"value":101},"--help",{"type":52,"value":103}," first",{"type":52,"value":105}," to see usage. 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Practices",{"type":46,"tag":72,"props":551,"children":552},{},[553,578,591,596,617],{"type":46,"tag":76,"props":554,"children":555},{},[556,561,563,569,571,576],{"type":46,"tag":64,"props":557,"children":558},{},[559],{"type":52,"value":560},"Use bundled scripts as black boxes",{"type":52,"value":562}," - To accomplish a task, consider whether one of the scripts available in ",{"type":46,"tag":80,"props":564,"children":566},{"className":565},[],[567],{"type":52,"value":568},"scripts\u002F",{"type":52,"value":570}," can help. These scripts handle common, complex workflows reliably without cluttering the context window. Use ",{"type":46,"tag":80,"props":572,"children":574},{"className":573},[],[575],{"type":52,"value":101},{"type":52,"value":577}," to see usage, then invoke directly.",{"type":46,"tag":76,"props":579,"children":580},{},[581,583,589],{"type":52,"value":582},"Use ",{"type":46,"tag":80,"props":584,"children":586},{"className":585},[],[587],{"type":52,"value":588},"sync_playwright()",{"type":52,"value":590}," for synchronous scripts",{"type":46,"tag":76,"props":592,"children":593},{},[594],{"type":52,"value":595},"Always close the browser when done",{"type":46,"tag":76,"props":597,"children":598},{},[599,601,607,609,615],{"type":52,"value":600},"Use descriptive selectors: ",{"type":46,"tag":80,"props":602,"children":604},{"className":603},[],[605],{"type":52,"value":606},"text=",{"type":52,"value":608},", ",{"type":46,"tag":80,"props":610,"children":612},{"className":611},[],[613],{"type":52,"value":614},"role=",{"type":52,"value":616},", CSS selectors, or IDs",{"type":46,"tag":76,"props":618,"children":619},{},[620,622,628,630],{"type":52,"value":621},"Add appropriate waits: ",{"type":46,"tag":80,"props":623,"children":625},{"className":624},[],[626],{"type":52,"value":627},"page.wait_for_selector()",{"type":52,"value":629}," or ",{"type":46,"tag":80,"props":631,"children":633},{"className":632},[],[634],{"type":52,"value":635},"page.wait_for_timeout()",{"type":46,"tag":107,"props":637,"children":639},{"id":638},"reference-files",[640],{"type":52,"value":641},"Reference Files",{"type":46,"tag":72,"props":643,"children":644},{},[645],{"type":46,"tag":76,"props":646,"children":647},{},[648,653,655],{"type":46,"tag":64,"props":649,"children":650},{},[651],{"type":52,"value":652},"examples\u002F",{"type":52,"value":654}," - Examples showing common patterns:\n",{"type":46,"tag":72,"props":656,"children":657},{},[658,669,680],{"type":46,"tag":76,"props":659,"children":660},{},[661,667],{"type":46,"tag":80,"props":662,"children":664},{"className":663},[],[665],{"type":52,"value":666},"element_discovery.py",{"type":52,"value":668}," - Discovering buttons, links, and inputs on a page",{"type":46,"tag":76,"props":670,"children":671},{},[672,678],{"type":46,"tag":80,"props":673,"children":675},{"className":674},[],[676],{"type":52,"value":677},"static_html_automation.py",{"type":52,"value":679}," - Using file:\u002F\u002F URLs for local HTML",{"type":46,"tag":76,"props":681,"children":682},{},[683,689],{"type":46,"tag":80,"props":684,"children":686},{"className":685},[],[687],{"type":52,"value":688},"console_logging.py",{"type":52,"value":690}," - Capturing console logs during automation",{"type":46,"tag":692,"props":693,"children":694},"style",{},[695],{"type":52,"value":696},"html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}",{"items":698,"total":820},[699,718,733,749,764,787,804],{"slug":700,"name":700,"fn":701,"description":702,"org":703,"tags":704,"stars":25,"repoUrl":26,"updatedAt":717},"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},[705,708,711,714],{"name":706,"slug":707,"type":15},"Creative","creative",{"name":709,"slug":710,"type":15},"Generative Art","generative-art",{"name":712,"slug":713,"type":15},"Graphics","graphics",{"name":715,"slug":716,"type":15},"JavaScript","javascript","2026-07-13T06:41:35.540127",{"slug":719,"name":719,"fn":720,"description":721,"org":722,"tags":723,"stars":25,"repoUrl":26,"updatedAt":732},"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},[724,725,728,729],{"name":549,"slug":546,"type":15},{"name":726,"slug":727,"type":15},"Engineering","engineering",{"name":715,"slug":716,"type":15},{"name":730,"slug":731,"type":15},"TypeScript","typescript","2026-07-13T06:43:13.153309",{"slug":734,"name":734,"fn":735,"description":736,"org":737,"tags":738,"stars":25,"repoUrl":26,"updatedAt":748},"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},[739,742,745],{"name":740,"slug":741,"type":15},"Branding","branding",{"name":743,"slug":744,"type":15},"Design","design",{"name":746,"slug":747,"type":15},"Typography","typography","2026-07-13T06:43:06.077629",{"slug":750,"name":750,"fn":751,"description":752,"org":753,"tags":754,"stars":25,"repoUrl":26,"updatedAt":763},"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},[755,756,757,760],{"name":706,"slug":707,"type":15},{"name":743,"slug":744,"type":15},{"name":758,"slug":759,"type":15},"Images","images",{"name":761,"slug":762,"type":15},"PDF","pdf","2026-07-13T06:39:58.803113",{"slug":765,"name":765,"fn":766,"description":767,"org":768,"tags":769,"stars":25,"repoUrl":26,"updatedAt":786},"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},[770,773,776,779,780,783],{"name":771,"slug":772,"type":15},"CI\u002FCD","ci-cd",{"name":774,"slug":775,"type":15},"Containers","containers",{"name":777,"slug":778,"type":15},"Deployment","deployment",{"name":726,"slug":727,"type":15},{"name":781,"slug":782,"type":15},"Kotlin","kotlin",{"name":784,"slug":785,"type":15},"Spring","spring","2026-07-13T06:41:47.83899",{"slug":788,"name":788,"fn":789,"description":790,"org":791,"tags":792,"stars":25,"repoUrl":26,"updatedAt":803},"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},[793,796,799,802],{"name":794,"slug":795,"type":15},"Cloudflare","cloudflare",{"name":797,"slug":798,"type":15},"Cloudflare Pages","cloudflare-pages",{"name":800,"slug":801,"type":15},"Cloudflare Workers","cloudflare-workers",{"name":777,"slug":778,"type":15},"2026-07-17T06:04:42.853896",{"slug":805,"name":805,"fn":806,"description":807,"org":808,"tags":809,"stars":25,"repoUrl":26,"updatedAt":819},"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},[810,813,816],{"name":811,"slug":812,"type":15},"Automation","automation",{"name":814,"slug":815,"type":15},"Desktop","desktop",{"name":817,"slug":818,"type":15},"UI Components","ui-components","2026-07-13T06:40:38.798626",128,{"items":822,"total":945},[823,839,848,857,868,878,887,896,905,915,924,935],{"slug":824,"name":824,"fn":825,"description":826,"org":827,"tags":828,"stars":836,"repoUrl":837,"updatedAt":838},"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},[829,832,835],{"name":830,"slug":831,"type":15},"Architecture","architecture",{"name":833,"slug":834,"type":15},"Configuration","configuration",{"name":726,"slug":727,"type":15},1650,"https:\u002F\u002Fgithub.com\u002FJetBrains\u002FMPS","2026-07-17T06:06:57.311661",{"slug":840,"name":840,"fn":841,"description":842,"org":843,"tags":844,"stars":836,"repoUrl":837,"updatedAt":847},"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},[845,846],{"name":830,"slug":831,"type":15},{"name":726,"slug":727,"type":15},"2026-07-17T06:04:48.066901",{"slug":849,"name":849,"fn":850,"description":851,"org":852,"tags":853,"stars":836,"repoUrl":837,"updatedAt":856},"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},[854,855],{"name":830,"slug":831,"type":15},{"name":726,"slug":727,"type":15},"2026-07-13T06:45:21.757084",{"slug":858,"name":858,"fn":859,"description":860,"org":861,"tags":862,"stars":836,"repoUrl":837,"updatedAt":867},"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},[863,864],{"name":830,"slug":831,"type":15},{"name":865,"slug":866,"type":15},"Code Analysis","code-analysis","2026-07-23T05:41:33.639365",{"slug":869,"name":869,"fn":870,"description":871,"org":872,"tags":873,"stars":836,"repoUrl":837,"updatedAt":877},"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},[874],{"name":875,"slug":876,"type":15},"Data Analysis","data-analysis","2026-07-13T06:45:19.114674",{"slug":879,"name":879,"fn":880,"description":881,"org":882,"tags":883,"stars":836,"repoUrl":837,"updatedAt":886},"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},[884,885],{"name":743,"slug":744,"type":15},{"name":817,"slug":818,"type":15},"2026-07-23T05:41:56.638151",{"slug":888,"name":888,"fn":889,"description":890,"org":891,"tags":892,"stars":836,"repoUrl":837,"updatedAt":895},"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},[893,894],{"name":726,"slug":727,"type":15},{"name":817,"slug":818,"type":15},"2026-07-23T05:41:49.666535",{"slug":897,"name":897,"fn":898,"description":899,"org":900,"tags":901,"stars":836,"repoUrl":837,"updatedAt":904},"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},[902,903],{"name":830,"slug":831,"type":15},{"name":726,"slug":727,"type":15},"2026-07-13T06:44:59.507855",{"slug":906,"name":906,"fn":907,"description":908,"org":909,"tags":910,"stars":836,"repoUrl":837,"updatedAt":914},"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},[911,912,913],{"name":830,"slug":831,"type":15},{"name":865,"slug":866,"type":15},{"name":726,"slug":727,"type":15},"2026-07-17T06:06:58.042999",{"slug":916,"name":916,"fn":917,"description":918,"org":919,"tags":920,"stars":836,"repoUrl":837,"updatedAt":923},"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},[921,922],{"name":830,"slug":831,"type":15},{"name":726,"slug":727,"type":15},"2026-07-23T05:41:48.692899",{"slug":925,"name":925,"fn":926,"description":927,"org":928,"tags":929,"stars":836,"repoUrl":837,"updatedAt":934},"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},[930,931],{"name":23,"slug":24,"type":15},{"name":932,"slug":933,"type":15},"Migration","migration","2026-07-13T06:45:20.372122",{"slug":936,"name":936,"fn":937,"description":938,"org":939,"tags":940,"stars":836,"repoUrl":837,"updatedAt":944},"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},[941],{"name":942,"slug":943,"type":15},"Data Modeling","data-modeling","2026-07-23T05:41:30.705975",188]