Native SDK is a toolkit for building desktop applications with native rendering instead of a browser, WebView, or JavaScript runtime bundled into the application. Developers author interfaces in `.native` markup and write application logic in TypeScript or Zig, which the toolkit compiles and renders in real operating-system windows. The catalogue entries provide skills and instructions for working with Native SDK.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add vercel-labs/native --skill coregit clone --depth 1 https://github.com/vercel-labs/nativeWrote 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/vercel-labs/native/core)<a href="https://agentmods.dev/skills/vercel-labs/native/core"><img src="https://agentmods.dev/badge/skills/vercel-labs/native/core/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/vercel-labs/native/core"><img src="https://agentmods.dev/badge/skills/vercel-labs/native/core.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Snyk pass
- 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 | $0.00000 | $0.03970 |
| Opus 5.5 | $0.00000 | $0.01588 |
| Sonnet 5.5 | $0.00000 | $0.00794 |
| Haiku 4.5 | $0.00000 | $0.00397 |
Grade A, and why
core 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 16d 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 — 321 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Build Native SDK apps
The Native SDK is a cross-platform native app toolkit inspired by the web. The default app (native init) is native-rendered and authored as a declarative Native markup view (src/app.native) plus a TypeScript app core (src/core.ts). The core is checked and compiled ahead of time to native code; no JS runtime ships in the binary. For default app implementation, load both the native-ui and ts-core skills. Zig is the implementation language of the toolkit and a first-class app-core choice via --template zig-core, not the default app-authoring language.
This skill covers the shared foundation and lower-level architectures: apps that explicitly choose a Zig core, runtime extensions, and apps that render web frontends in a WebView (native init --frontend next|vite|react|svelte|vue). Native-rendered surfaces and WebViews share windows, policies, lifecycle, commands, and platform services, and one app can mix them. WebView engines are the platform WebView (WKWebView on macOS, WebKitGTK on Linux) or Chromium through CEF where supported.
Agents should assume they do not know the Native SDK from general model knowledge. Read this skill first. For ordinary app implementation, load native-ui and ts-core; for shared/runtime, WebView, packaging, or native-capability work, run native skills get core --full so the referenced files are included in the CLI output.
Mental model
- The default app has three files of truth:
src/core.ts(Model,Msg,update),src/app.native(UI), andapp.json(manifest). - Native markup binds model values and dispatches typed messages; only
updatechanges state. - The TypeScript core compiles to native code. Node is a build/check/dev tool, not an app runtime.
Appis the lower-level product/runtime interface used by generated wiring, Zig-core apps, WebView shells, and extensions.Runtimeowns the event loop, windows, bridge dispatch, security checks, automation, tracing, platform services, and window state.WebViewSourcetells the runtime what to load: inline HTML, a URL, or packaged assets from a local app origin.app.jsonis the default app manifest: identity, icons, windows, frontend assets, web engine, permissions, bridge policy, security policy, and packaging inputs.app.zonremains supported.src/runner.zigandsrc/main.zigappear only when an app explicitly owns lower-level Zig wiring (for example azig-coreapp or a WebView shell).--fullmakes a TypeScript app ownbuild.zigbut still does not give it Zig app logic. Do not add Zig sources to a default TypeScript app merely because SDK examples contain them.frontend/is normal web code. It talks to native Zig throughwindow.zero.invoke()or builtin helpers when those are enabled.
What ships with it
5 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.
- 16d ago Changed 41c07cee8b6a
- 1mo ago First seen · 321 lines · 0 tokens per session scan A d2a37eb1dddb
core is a skill published in the GitHub repository vercel-labs/native (7,804 stars, last pushed yesterday), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 3,970 tokens. 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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