Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/dotnet/maui-labsnpx agentmods add skills/dotnet/maui-labs/ios-slim-bindingsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/dotnet/maui-labs/ios-slim-bindings)<a href="https://agentmods.dev/skills/dotnet/maui-labs/ios-slim-bindings"><img src="https://agentmods.dev/badge/skills/dotnet/maui-labs/ios-slim-bindings/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/dotnet/maui-labs/ios-slim-bindings"><img src="https://agentmods.dev/badge/skills/dotnet/maui-labs/ios-slim-bindings.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00097 | $0.02890 |
| Opus 5 | $0.00048 | $0.01445 |
| Sonnet 5 | $0.00019 | $0.00578 |
| Haiku 4.5 | $0.00010 | $0.00289 |
Grade A, and why
ios-slim-bindings scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 279 lines — stays where its author put it; the contents beside it link to each section on GitHub.
When to use this skill
Activate this skill when the user asks:
- How do I create iOS bindings for a native library?
- How do I wrap an iOS SDK for use in .NET MAUI?
- How do I create slim bindings for iOS?
- How do I use Native Library Interop for iOS?
- How do I bind a Swift library to .NET?
- How do I use Objective Sharpie for iOS bindings?
- How do I integrate an xcframework into .NET MAUI?
- How do I create a Swift wrapper for a native iOS library?
- How do I update iOS bindings when the native SDK changes?
- How do I fix iOS binding build errors?
- How do I expose native iOS APIs to C#?
- How do I handle CocoaPods dependencies in iOS bindings?
- How do I handle Swift Package Manager dependencies?
Overview
This skill guides the creation of Native Library Interop (Slim Bindings) for iOS. This modern approach creates a thin native Swift/Objective-C wrapper exposing only the APIs you need from a native iOS library, making bindings easier to create and maintain.
When to Use Slim Bindings vs Traditional Bindings
| Scenario | Recommended Approach |
|---|---|
| Need only a subset of library functionality | Slim Bindings |
| Easier maintenance when SDK updates | Slim Bindings |
| Prefer working in Swift/Objective-C for wrapper | Slim Bindings |
| Better isolation from breaking changes | Slim Bindings |
| Need entire library API surface | Traditional Bindings |
| Creating bindings for third-party developers | Traditional Bindings |
| Already maintaining traditional bindings | Traditional Bindings |
Inputs
| Parameter | Required | Example | Notes |
|---|---|---|---|
| libraryName | yes | FirebaseMessaging, Lottie |
Name of the native iOS library to bind |
| bindingProjectName | yes | MyBinding.MaciOS |
Name for the C# binding project |
| dependencySource | no | cocoapods, spm, xcframework |
How the native library is distributed |
| targetFrameworks | no | net10.0-ios;net10.0-maccatalyst |
Target frameworks (default: latest .NET iOS + Mac Catalyst) |
| exposedApis | no | List of specific APIs | Which native APIs to expose (helps scope the wrapper) |
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 10d ago First seen · 279 lines · 97 tokens per session scan A 04f5f9351cde
ios-slim-bindings is a skill published in the GitHub repository dotnet/maui-labs (213 stars, last pushed yesterday), licensed MIT. It adds 97 tokens to every session and 2,890 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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