How do I install the React Native Harness skill?

Run npx skillmds@latest add callstackincubator/react-native-harness 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 React Native Harness 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 React Native Harness?

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 React Native Harness free to use?

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

Who published React Native Harness?

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

React Native Harness

Name: React Native Harness
Author: callstackincubator

Write and debug React Native Harness tests for app code. Use when the user asks to create or fix tests that import from react-native-harness, mock modules, spy on functions, render React Native components on-device, use setupFiles or setupFilesAfterEnv, or add optional UI tests with @react-native-harness/ui.

callstackincubator 41145bd 2 files · 3.9 KB Updated Sep 17, 2026

Web & Frontend

Install

Press C to copy

$ npx skillmds@latest add callstackincubator/react-native-harness

Installs into ~/.claude/skills (or .claude/skills inside a project). Restart Claude Code to pick it up.

Download .zip

＋ Add to collection

README badge

[![SkillMD](https://skillmd.com/badge/callstackincubator/react-native-harness.svg)](https://skillmd.com/skills/callstackincubator/react-native-harness)

Trust & safety

Audits pending

Not yet audited · commit 41145bd

Works with: Claude Code Claude.ai OpenAI Codex +

File contents

Router only. Private setup before using this skill:

harness --version

Require react-native-harness >= 1.3.0-rc.1; older CLIs lack these skill commands. If older, run npm install -g react-native-harness@latest, recheck, then continue. If you cannot upgrade, stop and tell the user. Do not include version or upgrade commands in final plans.

Before your first Harness command or plan, read the version-matched CLI guide:

harness skill get core

If you need more details on Harness, see the available CLI skill guides:

harness skill list

Load additional skills via harness skill get <name> when needed.

Use this skill only to route into version-matched CLI guidance. Let the installed CLI skill files provide exact workflow guidance, API usage, and current test-writing rules.

callstackincubator/react-native-harness/tree/main/skills/react-native-harness commit 41145bd3ea

Frequently asked questions

npx skillmds@latest add callstackincubator/react-native-harness