Blazing Fast .NET skill
A single SKILL.md of performance tips for .NET 10 to 11 workloads, consulted on demand when you optimize.
- 309 ★ on the repository
- Last commit
- MIT
Minimal access
Why this level
- The agent edits application code; changes are checked by measurement but do not replace review.
Install
- Works in
In your terminal, with SkillFoxx CLI
npx skillfoxx add skills/blazing-fast-netDetects the agents on your machine, shows the access level and pins the version.
Other ways to install
Access and checks
How we reviewMinimal accessThe tool runs nothing and makes no network calls.
- The agent edits application code; changes are checked by measurement but do not replace review.
This is third-party code. Review the repository files before installing.
What it does
Blazing Fast .NET is a single `SKILL.md` of performance tuning tips for .NET 10.0 to 11.0, mostly aimed at benchmarks. An agent reads it from the raw file link and applies it to your app in a set order: baseline first, then profiling, then one change at a time with a measured win. The README includes a bonus prompt to inspect a library for safety issues using the dotnet/docs unsafe-code guide. The author deliberately excludes `unsafe`, manual `ArrayPool<T>` and third-party dependencies beyond BenchmarkDotNet and FlameGraph.
Who it is for. .NET developers tuning hot paths and benchmarks who want an agent to work from measurements rather than guesses.
Good fit when
- A .NET 10 benchmark runs slower than expected.
- The bottleneck is found by profile before code edits.
- Every change is checked with a separate measurement.
- A library is inspected for unsafe patterns before release.
Not a fit when
- The project is not .NET.
- Unsafe code with `unsafe` is acceptable for speed.
- You need an always-on instruction in every session.
Example request
Read SKILL.md from BlazingFastDotnet and speed up the parser in Parser.Benchmarks, starting with a baseline measurement.Limitations
This is not an official Microsoft guide: the author asks that you always measure and use it at your own discretion. Tips target .NET 10.0 to 11.0 and may not fit older runtimes. The skill holds no executable code, only reference text. The repository is tiny: four files including `dummy.cs`. The last commit was on 1 November 2026. The agent fetches the file over the network, so offline work needs a local copy.
How to disable. Drop the file link from your prompts or delete the local `SKILL.md` copy from the agent skills directory.
FAQ
Should it be always on?
No, the author suggests consulting it on demand when optimizing.
Which .NET versions are covered?
.NET 10.0 to 11.0.
Which tools are mentioned?
BenchmarkDotNet and FlameGraph for `perf` flame graphs.
What is the bonus prompt?
A library safety inspection based on the dotnet/docs guide, reporting correctness issues and anti-patterns.
What did the author exclude?
`unsafe` code, manual `ArrayPool<T>` and extra dependencies.
Discussion
No questions or reviews yet.
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README in short
A reference of .NET speed-up tips as one skill plus a working order for the agent: measure, profile, one change at a time.