How do I install the Native Sim skill?

Run npx skillmds@latest add tomevault-io/native-sim in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Native Sim safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Native Sim?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Native Sim free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Native Sim?

tomevault-io (@tomevault-io) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Native Sim by tomevault-io — Agent Skill

Name: Native Sim
Author: tomevault-io

Native Sim

Host-based simulation using the Zephyr native_sim board. Covers building for Linux/macOS/Windows, automated testing, host-side debugging (GDB, Valgrind), and host-target integration. Trigger when developing application logic without hardware or setting up CI/CD tests. Use when this capability is needed.

tomevault-io 42e1bda 2 files · 3.1 KB Updated Sep 17, 2026

File contents

Zephyr Native Simulation

Develop, test, and debug Zephyr applications with the speed and convenience of your host machine.

Core Workflows

1. Simulation Basics

Understand when to use native_sim vs. QEMU and how to map host resources.

Reference: simulation_basics.md
Key Tools: west build -b native_sim.

2. Host-Side Debugging

Use professional host tools to find the most elusive bugs.

Reference: debugging.md
Key Tools: gdb, valgrind, gprof, pcap.

3. Automated Testing (CI/CD)

The foundation of modern firmware development.

Reference: See the testing-debugging skill (Phase 3) for comprehensive testing workflows.
Key Tools: twister -p native_sim.

Quick Start

# Build for host
west build -b native_sim samples/hello_world

# Run the app
./build/zephyr/zephyr.exe

# Debug with GDB
west debug

Automation Tools

native_log_scan.py: Scan native simulation logs for common crash/failure signatures.

Examples & Templates

native_sim_ci_checklist.md: Starter checklist for CI simulation coverage.

Validation Checklist

west build -b native_sim succeeds for at least one sample and one app target.
Built binary runs on host and emits expected startup logs.
Host debugger (GDB/Valgrind) can attach and surface expected symbols.
Simulation test path is integrated into CI (for example Twister native_sim run).

Resources

References:
- simulation_basics.md: Architectural overview and usage patterns.
- debugging.md: GDB, Valgrind, and profiling guide.
Scripts:
- native_log_scan.py: Failure signature scanner for native_sim logs.
Assets:
- native_sim_ci_checklist.md: CI simulation review checklist.

Converted and distributed by TomeVault — claim your Tome and manage your conversions.

---name: native-simdescription: Host-based simulation using the Zephyr native_sim board. Covers building for Linux/macOS/Windows, automated testing, host-side debugging (GDB, Valgrind), and host-target integration. Trigger when developing application logic without hardware or setting up CI/CD tests. Use when this capability is needed.---# Zephyr Native SimulationDevelop, test, and debug Zephyr applications with the speed and convenience of your host machine.## Core Workflows### 1. Simulation BasicsUnderstand when to use `native_sim` vs. QEMU and how to map host resources.- **Reference**: **[simulation_basics.md](references/simulation_basics.md)**- **Key Tools**: `west build -b native_sim`.### 2. Host-Side DebuggingUse professional host tools to find the most elusive bugs.- **Reference**: **[debugging.md](references/debugging.md)**- **Key Tools**: `gdb`, `valgrind`, `gprof`, `pcap`.### 3. Automated Testing (CI/CD)The foundation of modern firmware development.- **Reference**: See the `testing-debugging` skill (Phase 3) for comprehensive testing workflows.- **Key Tools**: `twister -p native_sim`.## Quick Start```bash# Build for hostwest build -b native_sim samples/hello_world# Run the app./build/zephyr/zephyr.exe# Debug with GDBwest debug```## Automation Tools- **[native_log_scan.py](scripts/native_log_scan.py)**: Scan native simulation logs for common crash/failure signatures.## Examples & Templates- **[native_sim_ci_checklist.md](assets/native_sim_ci_checklist.md)**: Starter checklist for CI simulation coverage.## Validation Checklist- [ ] `west build -b native_sim` succeeds for at least one sample and one app target.- [ ] Built binary runs on host and emits expected startup logs.- [ ] Host debugger (GDB/Valgrind) can attach and surface expected symbols.- [ ] Simulation test path is integrated into CI (for example Twister native_sim run).## Resources- **[References](references/)**: - `simulation_basics.md`: Architectural overview and usage patterns. - `debugging.md`: GDB, Valgrind, and profiling guide.- **[Scripts](scripts/)**: - `native_log_scan.py`: Failure signature scanner for native_sim logs.- **[Assets](assets/)**: - `native_sim_ci_checklist.md`: CI simulation review checklist.---> Converted and distributed by [TomeVault](https://tomevault.io/claim/beriberikix) — claim your Tome and manage your conversions.

Frequently asked questions