analyzing-dotnet-performance SKILL.md skillA
analyzing-dotnet-performance from dotnet/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add dotnet/skills/analyzing-dotnet-performance@git:20260901.32c3ecaPins git:20260901.32c3eca in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- dotnet/skills
- Path
plugins/dotnet-diag/skills/analyzing-dotnet-performance/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260901.32c3eca, committed Sep 1, 2026
- First version recorded
- May 8, 2026
- Size
- 12,673 bytes
- Repository stars
- 5,788
- License
- MIT
Scans .NET code for ~50 performance anti-patterns across async, memory, strings, collections, LINQ, regex, serialization, and I/O with tiered severity classification. Use when analyzing .NET code for optimization opportunities, reviewing hot paths, or auditing allocation-heavy patterns.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# .NET Performance Patterns Scan C#/.NET code for performance anti-patterns and produce prioritized findings with concrete fixes. Patterns sourced from the official .NET performance blog series, distilled to customer-actionable guidance. ## When to Use - Reviewing C#/.NET code for performance optimization opportunities - Auditing hot paths for allocation-heavy or inefficient patterns - Systematic scan of a codebase for known anti-patterns before release - Second-opinion analysis after manual performance review ## When Not to Use - **Algorithmic complexity analysis** — this skill targets API usage patterns, not algorithm design - **Code not on a hot path** with no performance requirements — avoid premature optimization ## Inputs | Input | Required | Description | |-------|----------|-------------| | Source code | Yes | C# files, code blocks, or repository paths to scan | | Hot-path context | Recommended | Which code paths are performance-critical | | Target framework | Recommended | .NET version (some patterns require .NET 8+) | | Scan depth | Optional | `critical-only`, `standard` (default), or `comprehensive` | ## Workflow ### Step 1: Load Critical Reference …
Read the whole file at its exact version.
How to install
mdr add dotnet/skills/analyzing-dotnet-performance@sha256:66d06c577cf6cf55The line at the top of this page pins the label git:20260901.32c3eca, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_jxyxkwqhvu4sudtn)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between May 8, 2026 and Sep 1, 2026, about one every 29 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260901.32c3eca latest | 2026-09-01 | 32c3eca | 12,673 B | A | view · diff |
| git:20260831.5854dfd | 2026-08-31 | 5854dfd | 11,902 B | A | view · diff |
| git:20260828.99922ce | 2026-08-28 | 99922ce | 11,705 B | A | view · diff |
| git:20260825.c3cd3f7 | 2026-08-25 | c3cd3f7 | 11,513 B | A | view · diff |
| git:20260508.e7ec5a7 | 2026-05-08 | e7ec5a7 | 11,406 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (12673 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
dotnet/skills · 5,788 stars · license MIT · pushed 2026-11-01 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_jxyxkwqhvu4sudtn GET https://markdownregistry.com/api/v1/resolve?ref=dotnet/skills/analyzing-dotnet-performance GET https://markdownregistry.com/api/v1/blob/66d06c577cf6cf55d548318c10bd80de3c8ee5495bea1f6d20d277ddde63ea83
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.