[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"skill-dotnet-dump-collect":3,"mdc--x6c16v-key":34,"related-repo-dotnet-dump-collect":1109,"related-org-dotnet-dump-collect":1218},{"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":29,"sourceUrl":32,"mdContent":33},"dump-collect","collect crash dumps for .NET applications","Configure and collect crash dumps for modern .NET applications. USE FOR: enabling automatic crash dumps for CoreCLR or NativeAOT, capturing dumps from running .NET processes, setting up dump collection in Docker or Kubernetes, using dotnet-dump collect or createdump. 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USE FOR: enabling automatic crash dumps for CoreCLR or NativeAOT, capturing dumps from running .NET processes, setting up dump collection in Docker or Kubernetes, using dotnet-dump collect or createdump. DO NOT USE FOR: analyzing or debugging dumps, post-mortem investigation with lldb\u002Fwindbg\u002Fdotnet-dump analyze, profiling or tracing, or for .NET Framework processes.\"\nlicense: MIT\n---\n\n# .NET Crash Dump Collection\n\nThis skill configures and collects crash dumps for modern .NET applications (CoreCLR and NativeAOT) on Linux, macOS, and Windows — including containers.\n\n## Stop Signals\n\n🚨 **Read before starting any workflow.**\n\n- **Stop after dumps are enabled or collected.** Do not open, analyze, or triage dump files.\n- **If the user already has a dump file**, this skill does not cover analysis. Let them know analysis is out of scope.\n- **Do not install analysis tools** (dotnet-dump analyze, windbg). Only install collection tools (dotnet-dump collect). Using `lldb` for on-demand dump capture on macOS is allowed — it ships with Xcode command-line tools and is not being used for analysis.\n- **Do not trace root cause** of crashes. Report the dump file location and move on.\n- **Do not modify application code.** Configuration is environment-only (env vars, OS settings, container specs).\n\n## Step 1 — Identify the Scenario\n\nAsk or determine:\n\n1. **Goal**: Enable automatic crash dumps, or capture a dump from a running process right now?\n2. **Platform**: Linux, macOS, or Windows? Running in a container (Docker\u002FKubernetes)?\n3. **Runtime**: CoreCLR or NativeAOT?\n\n### Detecting CoreCLR vs NativeAOT\n\n**From a binary file (Linux\u002FmacOS):**\n```bash\n# CoreCLR — has IL metadata \u002F managed entry point\nstrings \u003Cbinary> | grep -q \"CorExeMain\" && echo \"CoreCLR\"\n\n# NativeAOT — has Redhawk runtime symbols\nstrings \u003Cbinary> | grep -q \"Rhp\" && echo \"NativeAOT\"\n\n# On macOS\u002FLinux, also try:\nnm \u003Cbinary> 2>\u002Fdev\u002Fnull | grep -qi \"Rhp\" && echo \"NativeAOT\"\n```\n\n**From a binary file (Windows):**\n```powershell\n# CoreCLR — has a CLI header (IL entry point)\ndumpbin \u002Fclrheader \u003Cbinary.exe> | Select-String \"CLI Header\" -Quiet\n\n# NativeAOT — no CLI header, has Redhawk symbols\ndumpbin \u002Fsymbols \u003Cbinary.exe> | Select-String \"Rhp\" -Quiet\n```\n\n**From a running process (Linux):**\n```bash\n# Resolve the binary, then use the same file checks\nBINARY=$(readlink \u002Fproc\u002F\u003Cpid>\u002Fexe)\nstrings \"$BINARY\" | grep -q \"CorExeMain\" && echo \"CoreCLR\" || echo \"NativeAOT\"\n```\n\n**From a running process (macOS):**\n```bash\n# Resolve the binary path from the running process\nBINARY=$(ps -o comm= -p \u003Cpid>)\nstrings \"$BINARY\" | grep -q \"CorExeMain\" && echo \"CoreCLR\" || echo \"NativeAOT\"\n```\n\n**From a running process (Windows PowerShell):**\n```powershell\n# CoreCLR — loads coreclr.dll\n(Get-Process -Id \u003Cpid>).Modules.ModuleName -contains \"coreclr.dll\"\n\n# .NET Framework — loads clr.dll (this skill does not apply)\n(Get-Process -Id \u003Cpid>).Modules.ModuleName -contains \"clr.dll\"\n```\n\n> **If the app is .NET Framework (`clr.dll`), stop.** This skill covers modern .NET (CoreCLR and NativeAOT) only.\n>\n> **If neither CoreCLR nor NativeAOT is detected, stop.** This skill only applies to .NET applications — do not proceed.\n\n## Step 2 — Load the Appropriate Reference\n\nBased on the scenario identified in Step 1, read the relevant reference file:\n\n| Scenario | Reference |\n|----------|-----------|\n| CoreCLR app (any platform) | `references\u002Fcoreclr-dumps.md` |\n| NativeAOT app (any platform) | `references\u002Fnativeaot-dumps.md` |\n| Any app in Docker or Kubernetes | `references\u002Fcontainer-dumps.md` (then also load the runtime-specific reference) |\n\n## Step 3 — Execute\n\nFollow the instructions in the loaded reference to configure or collect dumps. 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USE FOR: build errors that are unclear from console output, diagnosing cascading failures across multi-project builds, tracing MSBuild target execution order, and generally any MSBuild build issues. Requires an existing .binlog file. DO NOT USE FOR: generating binlogs (use binlog-generation), non-MSBuild build systems.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[1199,1200,1201],{"name":1119,"slug":1120,"type":15},{"name":20,"slug":21,"type":15},{"name":1138,"slug":1139,"type":15},"2026-07-12T08:21:34.637923",{"slug":1204,"name":1204,"fn":1205,"description":1206,"org":1207,"tags":1208,"stars":22,"repoUrl":23,"updatedAt":1216},"binlog-generation","generate MSBuild binary logs for diagnostics","Generate MSBuild binary logs (binlogs) for build diagnostics and analysis. USE FOR: adding \u002Fbl:{} to any dotnet build, test, pack, publish, or restore command to capture a full build execution trace, prerequisite for binlog-failure-analysis and build-perf-diagnostics skills, enabling post-build investigation of errors or performance. Requires MSBuild 17.8+ \u002F .NET 8 SDK+ for {} placeholder; PowerShell needs -bl:{{}}. DO NOT USE FOR: non-MSBuild build systems (npm, Maven, CMake), analyzing an existing binlog (use binlog-failure-analysis instead).",{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[1209,1212,1213],{"name":1210,"slug":1211,"type":15},"Build","build",{"name":20,"slug":21,"type":15},{"name":1214,"slug":1215,"type":15},"Engineering","engineering","2026-07-19T05:38:19.340791",96,{"items":1219,"total":1322},[1220,1232,1239,1246,1254,1260,1268,1274,1280,1290,1301,1312],{"slug":1221,"name":1221,"fn":1222,"description":1223,"org":1224,"tags":1225,"stars":1229,"repoUrl":1230,"updatedAt":1231},"multithreaded-task-migration","migrate MSBuild tasks to multithreaded mode","Guide for migrating MSBuild tasks to multithreaded mode support, including compatibility red-team review. Use this when converting tasks to thread-safe versions, implementing IMultiThreadableTask, adding TaskEnvironment support, or auditing migrations for behavioral compatibility.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[1226,1227,1228],{"name":17,"slug":18,"type":15},{"name":1214,"slug":1215,"type":15},{"name":1123,"slug":1124,"type":15},5535,"https:\u002F\u002Fgithub.com\u002Fdotnet\u002Fmsbuild","2026-07-22T05:37:33.965588",{"slug":1112,"name":1112,"fn":1113,"description":1114,"org":1233,"tags":1234,"stars":22,"repoUrl":23,"updatedAt":1125},{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[1235,1236,1237,1238],{"name":17,"slug":18,"type":15},{"name":1119,"slug":1120,"type":15},{"name":20,"slug":21,"type":15},{"name":1123,"slug":1124,"type":15},{"slug":1127,"name":1127,"fn":1128,"description":1129,"org":1240,"tags":1241,"stars":22,"repoUrl":23,"updatedAt":1140},{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[1242,1243,1244,1245],{"name":17,"slug":18,"type":15},{"name":1134,"slug":1135,"type":15},{"name":20,"slug":21,"type":15},{"name":1138,"slug":1139,"type":15},{"slug":1142,"name":1142,"fn":1143,"description":1144,"org":1247,"tags":1248,"stars":22,"repoUrl":23,"updatedAt":1158},{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[1249,1250,1251,1252,1253],{"name":17,"slug":18,"type":15},{"name":20,"slug":21,"type":15},{"name":1150,"slug":1151,"type":15},{"name":1153,"slug":1154,"type":15},{"name":1156,"slug":1157,"type":15},{"slug":1160,"name":1160,"fn":1161,"description":1162,"org":1255,"tags":1256,"stars":22,"repoUrl":23,"updatedAt":1172},{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[1257,1258,1259],{"name":1119,"slug":1120,"type":15},{"name":1167,"slug":1168,"type":15},{"name":1170,"slug":1171,"type":15},{"slug":1174,"name":1174,"fn":1175,"description":1176,"org":1261,"tags":1262,"stars":22,"repoUrl":23,"updatedAt":1192},{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[1263,1264,1265,1266,1267],{"name":17,"slug":18,"type":15},{"name":1181,"slug":1182,"type":15},{"name":1184,"slug":1185,"type":15},{"name":1187,"slug":1188,"type":15},{"name":1190,"slug":1191,"type":15},{"slug":1194,"name":1194,"fn":1195,"description":1196,"org":1269,"tags":1270,"stars":22,"repoUrl":23,"updatedAt":1202},{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[1271,1272,1273],{"name":1119,"slug":1120,"type":15},{"name":20,"slug":21,"type":15},{"name":1138,"slug":1139,"type":15},{"slug":1204,"name":1204,"fn":1205,"description":1206,"org":1275,"tags":1276,"stars":22,"repoUrl":23,"updatedAt":1216},{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[1277,1278,1279],{"name":1210,"slug":1211,"type":15},{"name":20,"slug":21,"type":15},{"name":1214,"slug":1215,"type":15},{"slug":1281,"name":1281,"fn":1282,"description":1283,"org":1284,"tags":1285,"stars":22,"repoUrl":23,"updatedAt":1289},"build-parallelism","optimize MSBuild build parallelism","Diagnose and fix under-parallelized MSBuild builds. USE WHEN a multi-project solution build is slower than expected, doesn't speed up when you add cores, pegs a single core while others idle, or you want to know why `-m` isn't helping. Note: `\u002Fmaxcpucount` default is 1 (sequential) — always pass `-m` for parallel builds. Covers finding the critical path (longest serial ProjectReference chain), graph build (`\u002Fgraph`), BuildInParallel, and solution filters (`.slnf`). DO NOT USE FOR: single-project builds, incremental issues (use incremental-build), compilation slowness inside one project (use build-perf-diagnostics), non-MSBuild build systems.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[1286,1287,1288],{"name":17,"slug":18,"type":15},{"name":1214,"slug":1215,"type":15},{"name":1123,"slug":1124,"type":15},"2026-07-19T05:38:18.364937",{"slug":1291,"name":1291,"fn":1292,"description":1293,"org":1294,"tags":1295,"stars":22,"repoUrl":23,"updatedAt":1300},"build-perf-baseline","establish and optimize build performance baselines","Establish build performance baselines and apply systematic optimization techniques. USE FOR: diagnosing slow builds, establishing before\u002Fafter measurements (cold, warm, no-op scenarios), applying optimization strategies like MSBuild Server, static graph builds, artifacts output, and dependency graph trimming. Start here before diving into build-perf-diagnostics, incremental-build, or build-parallelism. DO NOT USE FOR: non-MSBuild build systems, detailed bottleneck analysis (use build-perf-diagnostics after baselining).",{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[1296,1297,1298,1299],{"name":1214,"slug":1215,"type":15},{"name":13,"slug":14,"type":15},{"name":1123,"slug":1124,"type":15},{"name":1170,"slug":1171,"type":15},"2026-07-12T08:21:35.865649",{"slug":1302,"name":1302,"fn":1303,"description":1304,"org":1305,"tags":1306,"stars":22,"repoUrl":23,"updatedAt":1311},"build-perf-diagnostics","diagnose MSBuild build performance bottlenecks","Diagnose MSBuild build performance bottlenecks using binary log analysis. USE FOR: identifying why builds are slow by analyzing binlog performance summaries, detecting ResolveAssemblyReference (RAR) taking >5s, Roslyn analyzers consuming >30% of Csc time, single targets dominating >50% of build time, node utilization below 80%, excessive Copy tasks, NuGet restore running every build. Covers timeline analysis, Target\u002FTask Performance Summary interpretation, and 7 common bottleneck categories. Use after build-perf-baseline has established measurements. DO NOT USE FOR: establishing initial baselines (use build-perf-baseline first), fixing incremental build issues (use incremental-build), parallelism tuning (use build-parallelism), non-MSBuild build systems.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[1307,1308,1309,1310],{"name":17,"slug":18,"type":15},{"name":20,"slug":21,"type":15},{"name":1214,"slug":1215,"type":15},{"name":1123,"slug":1124,"type":15},"2026-07-12T08:21:40.961722",{"slug":1313,"name":1313,"fn":1314,"description":1315,"org":1316,"tags":1317,"stars":22,"repoUrl":23,"updatedAt":1321},"check-bin-obj-clash","detect MSBuild output path conflicts","Detects MSBuild projects with conflicting OutputPath or IntermediateOutputPath. USE FOR: builds failing with 'Cannot create a file when that file already exists', 'The process cannot access the file because it is being used by another process', intermittent build failures that succeed on retry, or missing\u002Foverwritten outputs in multi-project or multi-targeting builds where bin\u002Fobj (or project.assets.json) collide. Common causes: shared OutputPath, missing AppendTargetFrameworkToOutputPath, extra global properties (e.g. PublishReadyToRun), or SetTargetFramework on a ProjectReference to a single-targeting project. DO NOT USE FOR: file access errors unrelated to MSBuild (OS-level locking), single-project single-TFM builds, non-MSBuild build systems.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[1318,1319,1320],{"name":20,"slug":21,"type":15},{"name":1214,"slug":1215,"type":15},{"name":1167,"slug":1168,"type":15},"2026-07-19T05:38:14.336279",144]