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Plan and execute an upgrade of a project or solution to a newer .NET version (e.g. .NET 8 to .NET 10). Use when the user asks to upgrade, migrate, or modernize the target framework.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
Add a new Minimal API endpoint following this solution's conventions. Use when the user asks to add a route, endpoint, or new API operation (GET/POST/PUT/DELETE).
Find and fix async/await anti-patterns in C# code — blocking calls, async void, missing cancellation, fire-and-forget. Use when reviewing async code, diagnosing deadlocks or thread-pool starvation, or when the user asks about async correctness.
Create, review, and apply an EF Core migration safely. Use when the user wants to add a migration, change the database schema, add/modify entity properties, or asks about database changes.
Generate an xUnit test suite for a class, endpoint, or file. Use when the user asks for tests, test coverage, or to test something they just wrote.
Audit NuGet dependencies for vulnerabilities, deprecated packages, and outdated versions across the solution. Use when the user asks about package health, security vulnerabilities in dependencies, or updating packages.
Summarize uncommitted changes and flag risks. Use when the user asks what changed, wants a commit message, or asks to review their diff.
| name | dotnet-upgrade |
| description | Plan and execute an upgrade of a project or solution to a newer .NET version (e.g. .NET 8 to .NET 10). Use when the user asks to upgrade, migrate, or modernize the target framework. |
| argument-hint | [target-version e.g. net10.0] |
Target: $ARGUMENTS (default: latest LTS if unspecified — confirm with the user).
Phase 1 — Assess (read-only, report before changing anything):
.csproj: current TargetFramework, SDK style, package versions.#if NET… conditionals.Phase 2 — Execute (one project at a time, with user approval of the plan):
5. Bump TargetFramework, update the SDK packages, dotnet restore.
6. Build; fix errors, then fix all warnings — new analyzers surface real issues.
7. Update packages to target-compatible versions in the same commit as the framework bump for that project.
8. Run tests after each project. Do not proceed to the next project on red.
Phase 3 — Modernize (optional, separate commits):
9. Offer targeted modernizations the new TFM enables (collection expressions, primary constructors, TimeProvider, updated hosting APIs) — as suggestions, not silent rewrites.
Commit per phase with conventional-commit messages. Never combine the mechanical upgrade with behavioral changes.