---
title: ".NET Performance Patterns - Air Market"
description: "Your .NET code works but you suspect parts of it are wasteful, and you do not know where to look. This scans it for known performance mistakes across async code, memory, strings, collections, LINQ, r…"
canonical: "https://airmarket.ai/app/analyzing-dotnet-performance"
---

[Air Market](/) / [Developer Tools](/category/devtools) / .NET Performance Patterns

Skill by [Foundatio](/@foundatiofx)

# .NET Performance Patterns

Find the slow habits already sitting in your .NET code

## What this does

Your .NET code works but you suspect parts of it are wasteful, and you do not know where to look. This scans it for known performance mistakes across async code, memory, strings, collections, LINQ, regex, serialization and I/O, and sorts what it finds by how serious it is. Reach for it when reviewing a hot path or hunting allocations.

### Top 3 things it does for you

- Scan .NET code for performance anti-patterns
- Review a hot path before it goes live
- Audit code that allocates more than it should

## Information

**.NET Performance Patterns at a glance**

|  |  |
| --- | --- |
| Kind | Skill |
| Publisher | [Foundatio](/@foundatiofx) |
| Category | [Developer Tools](/category/devtools) |
| Works with | Agent Skills - an open standard supported by 40+ agents |
| Size | 42 KB |
| Licence | Apache-2.0 |
| Repository | [FoundatioFx/Foundatio](https://github.com/FoundatioFx/Foundatio/tree/359f021054164579b81e6539b4e2125917b3f395/.agents/skills/analyzing-dotnet-performance) |
| GitHub stars | 2,098 (as of Nov 2026) |

## Security report

**Verified.** AIR scanned this exact version of .NET Performance Patterns and flagged nothing. AIR's verdict: **safe**.

**What .NET Performance Patterns's check was run against**

|  |  |
| --- | --- |
| Commit | 359f021054164579b81e6539b4e2125917b3f395 |
| Content hash | 0a459230d70ae1e4629b658b549d152952fced46bce9f4883853a3ffe81f6a7c |
| Files read | [Browse the files at this exact commit](https://github.com/FoundatioFx/Foundatio/blob/359f021054164579b81e6539b4e2125917b3f395/.agents/skills/analyzing-dotnet-performance/SKILL.md) |

A scan is named by the exact content it read, not by a version number. A different version is a different artifact, and nothing here applies to a version AIR has not scanned.

[Read the full security report for .NET Performance Patterns](/security/analyzing-dotnet-performance)

## About .NET Performance Patterns

This skill scans .NET code for performance anti-patterns spanning async, memory, strings, collections, LINQ, regex, serialization and I/O, and classifies what it finds by severity tier.

Use it when you are looking for optimization opportunities, reviewing hot paths, or auditing allocation-heavy code.

## What's inside

- SKILL.md - instructions
- references/async-patterns.md - reference
- references/collections-and-linq.md - reference
- references/critical-patterns.md - reference
- references/io-and-serialization.md - reference
- references/memory-and-strings.md - reference
- references/regex-patterns.md - reference
- references/structural-patterns.md - reference

## Questions

### Is .NET Performance Patterns safe to install?

AIR scanned this exact version of .NET Performance Patterns and flagged nothing. AIR's verdict: safe. The verdict is named by the content that was read, at commit 359f02105416, so it cannot drift onto a version nobody scanned. The full report is at https://airmarket.ai/security/analyzing-dotnet-performance.

### How do I install .NET Performance Patterns?

Open https://airmarket.ai/app/analyzing-dotnet-performance on Air Market and use the install action: Air Market hands Claude a prompt naming this exact skill, and Claude sets it up. Source, pinned to the exact commit this listing describes: https://github.com/FoundatioFx/Foundatio/tree/359f021054164579b81e6539b4e2125917b3f395/.agents/skills/analyzing-dotnet-performance. Install from that link, not the branch.

## Related on Air Market

- [More Developer Tools listings](/category/devtools)
- [Everything by Foundatio](/@foundatiofx)

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Canonical URL: <https://airmarket.ai/app/analyzing-dotnet-performance>