dotnet-pinvoke SKILL.md skillA
dotnet-pinvoke 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/dotnet-pinvoke@git:20261019.ec3ac07Pins git:20261019.ec3ac07 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-advanced/skills/dotnet-pinvoke/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261019.ec3ac07, committed Oct 19, 2026
- First version recorded
- Jun 29, 2026
- Size
- 19,622 bytes
- Repository stars
- 5,788
- License
- MIT
Correctly call native (C/C++) libraries from .NET using P/Invoke and LibraryImport. Covers function signatures, string marshalling, memory lifetime, SafeHandle, and cross-platform patterns. USE FOR: writing new P/Invoke or LibraryImport declarations, reviewing or debugging existing native interop code, wrapping a C or C++ library for use in .NET, diagnosing crashes, memory leaks, or corruption at the managed/native boundary. DO NOT USE FOR: COM interop, C++/CLI mixed-mode assemblies, or pure…
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 P/Invoke Calling native code from .NET is powerful but unforgiving. Incorrect signatures, garbled strings, and leaked or freed memory are the most common sources of bugs — all can manifest as intermittent crashes, silent data corruption, or access violations far from the actual defect. This skill covers both `DllImport` (available since .NET Framework 1.0) and `LibraryImport` (source-generated, .NET 7+). When targeting .NET Framework, always use `DllImport`. When targeting .NET 7+, prefer `LibraryImport` for new code. When native AOT is a requirement, `LibraryImport` is the only option. ## When to Use This Skill - Writing a new `[DllImport]` or `[LibraryImport]` declaration from a C/C++ header - Reviewing P/Invoke signatures for correctness (type sizes, calling conventions, string encoding) - Wrapping an entire C library for use from .NET - Debugging `AccessViolationException`, `DllNotFoundException`, or silent data corruption at the native boundary - Migrating `DllImport` declarations to `LibraryImport` for AOT/trimming compatibility - Diagnosing memory leaks or heap corruption involving native handles or buffers ## Stop Signals …
Read the whole file at its exact version.
How to install
mdr add dotnet/skills/dotnet-pinvoke@sha256:05f8fe734ec6b010The line at the top of this page pins the label git:20261019.ec3ac07, 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_fa7rlilrnc7ksgmg)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Jun 29, 2026 and Oct 19, 2026, about one every 56 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261019.ec3ac07 latest | 2026-10-19 | ec3ac07 | 19,622 B | A | view · diff |
| git:20261016.86ebe86 | 2026-10-16 | 86ebe86 | 19,794 B | A | view · diff |
| git:20260629.4975793 | 2026-06-29 | 4975793 | 19,374 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 (19622 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_fa7rlilrnc7ksgmg GET https://markdownregistry.com/api/v1/resolve?ref=dotnet/skills/dotnet-pinvoke GET https://markdownregistry.com/api/v1/blob/05f8fe734ec6b010b8c3eefb28cf594123fec1ce3688cd08f4a804097237037a
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.