Tapp

Name: Tapp
Author: aarwitz

by aarwitzversion 0.35.6i★ 4iRuns on your computer

Registry nameio.github.aarwitz/tapp

How to install

What it does

Test iOS, Android, and web apps with agent exploration, replayable flows, and CI gates.

Connects Runs on your computer
Account or key No key needed
Category Developer tools

Install

Pick the AI app you use, then copy the settings.

Passed 3/3 checks · Runs on your computer · ✓ Commands checked Nov 13, 2026

First: which AI do you use?

ClaudeWeb · app · phoneChatGPTWebClaude CodeTerminalCursorCode editorVS CodeCode editorOtherOther apps

Pick your app and the steps appear below.

Works with Claude, with some setup first

Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Open the Claude desktop app’s settings file
SettingsDeveloperEdit Config
Done

Paste these settings and save the file

{
  "mcpServers": {
    "tapp": {
      "command": "npx",
      "args": [
        "-y",
        "@aarwitz/tapp"
      ]
    }
  }
}

Done

Quit Claude and open it again
Done
Try it
Use Tapp and tell me what you can do for me, then show me one thing
✓ If Claude says it is using Tapp or shows a Tapp tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

ChatGPT cannot connect Tapp yet

Tapp runs on your computer, but ChatGPT can only connect servers that run on the web

What you can do instead

A · Use an app that can connect Tapp

Steps for Claude →Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone
Steps for Claude Code →Install Node.js on your computer first (one time)
Steps for Cursor →Install Node.js on your computer first (one time)
Steps for VS Code →Install Node.js on your computer first (one time)

B · Others in Developer tools that work with ChatGPT

Picked from the most used in the same category, only ones that connect by address with no key

Sentry✓ ChatGPT
Compiler Explorer✓ ChatGPT
GitDiagram✓ ChatGPT

Works with Claude Code, with some setup first

Install Node.js on your computer first (one time)

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Open Terminal
Mac: press Command+Space and type Terminal · Windows: open PowerShell
Done

Paste this command and press Enter

claude mcp add --scope user tapp -- npx -y @aarwitz/tapp

Done

Type /mcp in Claude Code
You should see Tapp listed as connected
Done
Try it
Use Tapp and tell me what you can do for me, then show me one thing
✓ If Claude Code says it is using Tapp or shows a Tapp tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor, with some setup first

Install Node.js on your computer first (one time)

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Click this button to open Cursor
Open in Cursor
Cursor asks you to confirm; click Install
Done
Open the AI chat in Cursor in Agent mode
Done
Try it
Use Tapp and tell me what you can do for me, then show me one thing
✓ If Cursor says it is using Tapp or shows a Tapp tool in the answer, you are connected

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code, with some setup first

Install Node.js on your computer first (one time)

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Click this button to open VS Code
Open in VS Code
VS Code asks you to confirm; click Install
Done
Open the AI chat in VS Code in Agent mode
Done
Try it
Use Tapp and tell me what you can do for me, then show me one thing
✓ If VS Code says it is using Tapp or shows a Tapp tool in the answer, you are connected

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

JSON settings are under “For developers” below

Stuck? Ask people who use Tapp💬 Discussion →

For developers: Terminal commands and JSON settings

Installed on your computer

Claude Code

claude mcp add --scope user tapp -- npx -y @aarwitz/tapp

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "tapp": {
      "command": "npx",
      "args": [
        "-y",
        "@aarwitz/tapp"
      ]
    }
  }
}

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "tapp": {
      "command": "npx",
      "args": [
        "-y",
        "@aarwitz/tapp"
      ]
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "tapp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@aarwitz/tapp"
      ]
    }
  }
}

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

At a glance

GitHub stars i: 4
Downloads per weeki: 1,049/wk
Licence i: MIT
Connection: Runs on your computer
Transport: stdio
Latest versioni: 0.35.6
Categoryi: Developer tools
Published to registryi: Nov 13, 2026
Code last changedi: Nov 13, 2026
Maker: aarwitz
Packages: npm: @aarwitz/tapp
Repo: aarwitz/tapp
Registry status: Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Run on your computer in

Claude Goose LM Studio Msty Studio Cherry Studio Cursor VS Code + GitHub Copilot Visual Studio Windsurf (Devin Desktop)Zed Kiro Cline Continue JetBrains AI Assistant Claude Code Codex CLI Gemini CLI OpenCode nodecode Warp LibreChat Raycast

All apps, with pros and cons →

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 14, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account aarwitz, which owns the repo
✓ Pass
Still maintained
Code last changed yesterday
✓ Pass
Has a licence
Uses MIT
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

User reviews

No reviews yet

Compared with others in Developer toolsi

More stars than 83% of the other 5872 servers in this category
Published to the registry more recently than 95% of the other 5872 servers in this category
Basic checks equal to or better than 100% of the other 5872 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Tapp safe?

It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed yesterday, and the latest version (0.35.6) reached the registry yesterday.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: REA, GitHub, Serena MCP: the IDE for your agent

Others in the same category

Servers in the same category from other makers, sorted by stars.

Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

REA

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by morlutoWidely used↓ 388.7K/wk★ 457.7KUpdated 2 days ago

Runs on your computer

Install

GitHub

GitHub’s official server lets AI read and manage code, issues and pull requests in your account. Use GitHub’s hosted version or run it locally with Docker.

by githubWidely used★ 34.4KUpdated 11 days ago

Computer or cloud

Install

Serena MCP: the IDE for your agent

A powerful toolkit for coding, providing semantic retrieval and editing capabilities.

by oraiosWidely used↓ 35.2K/wk★ 31.4KUpdated 6 months ago

Runs on your computer

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

Tapp

Tapp lets coding agents verify UI changes on real iOS, Android, and web surfaces, then turns reviewed proof into deterministic CI checks. It can inspect and drive screens, explore for technical failures, and save important journeys as replayable tests.

Exploration reports findings, coverage, evidence, and limits. Only the repository-connected gate returns pass, fail, or inconclusive. Tapp does not turn an autonomous crawl into a subjective "ship-ready" score.

Real evidence, not a mock: this public DemoApp run reached the requested iOS surface in three observed route actions. Watch 45 seconds of autonomous exploration or inspect a complete sanitized web evidence report.

Supported targets:

Target app	Runtime
iOS	Simulator on macOS with Xcode; driven through XCUITest and accessibility
Android	Connected emulator or device with `adb`; driven through UIAutomator
Web	Owned browser app in Playwright Chromium
macOS desktop	Any `.app` on a Mac, driven through the Accessibility API; needs the Accessibility permission (`tapp doctor` says how)
Windows desktop	WPF, WinForms, and WinUI apps through Windows UI Automation — early runs are set up through the pilot

Windows hosts Android and web testing when their prerequisites are installed, and is the home of the Windows desktop target.

Give Tapp to your coding agent

After setup, the whole user prompt is:

Use Tapp to test this app.

The official skill teaches the agent to choose the smallest useful operation, handle repositories with multiple app targets, inspect visual evidence, and keep exploration observations separate from gate decisions.

Claude Code, Codex, Cursor, Copilot, and other Agent Skills clients (recommended):

npx -y skills add aarwitz/tapp --skill tapp

This installs the open Agent Skills workflow into the current project and lets the agent run the npm CLI directly. Inspecting, focused evidence, autonomous exploration, deterministic replay, and gating need no MCP server, plugin, account, API key, global Tapp install, or pasted prompt block. Add -g for a user-wide install, or --agent claude-code, --agent codex, and similar selectors to constrain the clients. Start or restart the agent from the application repository and use the short prompt above.

Claude Code — optional enhanced skill and MCP tools:

claude plugin marketplace add aarwitz/tapp

claude plugin install tapp@tapp

The plugin bundles the same tapp Agent Skill with the matching npm-backed MCP server. Add it when you want inline screenshot results or when the agent must interactively tap, type, and record an arbitrary multi-step journey in one persistent session. It is not required for the core skill-to-CLI workflow.

A live site, production, or a site you do not own: the agent uses tapp explore --read-only / tapp_explore {readOnly:true}, which renders and reads the page but never clicks, types or submits. Exploration is for apps and environments you own.

No agent integration: run the npm package directly from an app repository in one line:

npx -y @aarwitz/tapp@latest init . --explore

VS Code: install Tapp from the Marketplace. It contributes the same cross-platform Agent Skill to Copilot plus focused iOS simulator tools and an auto-refreshing screenshot preview. The preview is not an embedded Simulator or video stream. Android and web remain available through the skill's CLI/MCP workflow.

Teams: Tapp's core stays MIT licensed. A small paid founding pilot is open for hands-on repository onboarding, important-journey setup, and CI integration in infrastructure you control. Apply without sharing private data.

you:    "Add a logout button to the settings screen"

agent: *writes the Swift* agent: *tapp: finds Settings in source, follows its previously observed route, screenshots it* agent: "Done — and here it is working on the simulator: [screenshot]"

npm CLI quickstart

Requirements: Node ≥ 18. iOS needs macOS + Xcode; Android needs adb plus a connected emulator/device (and JDK 17 when Tapp builds source rather than installing an existing APK); web needs Playwright + Chromium. tapp doctor reports these separately.

From the app repository, ground Tapp once, then use the smallest operation for later checks:

npx -y @aarwitz/tapp@latest init . --explore # first run: detect/build, explore, and ground .tapp/ui-map.json

npx -y @aarwitz/tapp@latest look # one current screen + screenshot npx -y @aarwitz/tapp@latest explore --goal "Save storefront settings visible above keyboard" # source + observed-route fast path npx -y @aarwitz/tapp@latest explore # later broad exploration (observation, not a gate)

Source tells explore --goal where the requested UI likely lives; only a route already observed in .tapp/ui-map.json authorizes navigation. If a fresh repository has no such route yet, Tapp returns the source evidence instead of guessing through the app.

Claude Code can read the saved image with its file-reading tool; Codex can open it with view_image. The agent should report what the screenshot proves, relay the exploration findings as-is (an observation, not a merge decision — tapp ci gates that), and link the HTML evidence report. No Tapp server, account, global install, API key, or bundle id is required for this loop. The platform runtime still needs to be installed, and repository onboarding can write reviewed configuration under .tapp/.

The product, executable, and package leaf are all Tapp: npm distributes it as @aarwitz/tapp, while the installed command remains tapp.

To bootstrap maintained release infrastructure, preview the repository model and grounded plan before Tapp writes anything:

npx -y @aarwitz/tapp@latest init . --dry-run --json-out /tmp/tapp-init.json

Build/start the detected web target, ground the first UI Map, then stop it.

npx -y @aarwitz/tapp@latest init . --explore --platform web

Or build/install the detected Xcode target, ground the map, and persist the validated scheme.

npx -y @aarwitz/tapp@latest init . --explore --platform ios --target .

Or connect to an already-running owned URL:

npx -y @aarwitz/tapp@latest init . --explore --platform web --url http://127.0.0.1:4173

If the app has roles/accounts, bind names once; values stay in local/CI secrets.

npx -y @aarwitz/tapp@latest plan actor set alice . --role member --session isolated \ --credential email=ALICE_EMAIL --credential password=ALICE_PASSWORD

Review-only path: tapp init . → tapp plan show → tapp plan review --approve ...

After approved drafts replay and are promoted, establish the selected target's baseline

through the ordinary full gate, then generate the reviewable GitHub workflow.

npx -y @aarwitz/tapp@latest ci baseline . --platform web npx -y @aarwitz/tapp@latest ci install .

Actor setup refuses to overwrite an existing actor. Repeat actor set with --replace only when you intend to replace that actor's reviewed role, session, provisioning, or credential bindings.

In a repository containing multiple apps (for example, iOS plus web), tapp init . --explore without an explicit target does not guess from detection order—even when a prior choice is recorded. A human terminal gets a numbered selector; a non-interactive CLI prints exact target-selection commands, while MCP also returns structured choices. Neither builds or writes before the choice. After you choose one, the model retains every detected target and records the choice as the default for the next bare tapp explore; explicit init --explore continues to ask because it is the onboarding/refresh operation. Setup gaps belonging only to unselected targets are shown as informational, not as failures of the selected run.

The baseline command writes only after exploration and every selected deterministic suite pass conclusively. It stores .tapp/baselines/ / .json; the generated workflow uses that exact target identity so two apps on the same platform never share a baseline. ci install writes .github/workflows/tapp.yml plus .tapp/ci.json, refuses unresolved build configuration and existing-file collisions, and never commits, pushes, enables branch protection, or creates GitHub resources. Review and pin the generated Tapp release reference to its immutable commit SHA before production.

look and explore accept a repo directory, a path/to/App.app, a bundle id, or no target (auto-detecting the repository or installed app):

npx -y @aarwitz/tapp@latest look [target]         # launch the app → screen summary + screenshot file

npx -y @aarwitz/tapp@latest look [target] --tree # + the accessibility tree of the current screen npx -y @aarwitz/tapp@latest look # no target on iOS: the booted simulator as it is right now

On iOS, look --tree inspects an installed app and never builds, uninstalls, or replaces it. With no target, it uses the repository's recorded iOS target or the sole installed app. If the choice is ambiguous, it lists the installed apps for you to select. Pass a bundle id to inspect a specific sandbox build; run tapp_build (MCP) or init . --explore when you intend to replace it.

iOS Flow evidence includes flow-final.png on passing and failing replays, plus flow-failure-N.png at a failed step, alongside the log, JSON report, and XCTest result bundle.

Web: npx -y @aarwitz/tapp@latest explore http://localhost:3000 *(one-time setup: npm i -g playwright && npx playwright install chromium)*. Add --watch to open Tapp's controlled, isolated Chromium window and follow its clicks with an on-page pointer/action label. Tapp hides that watch UI from saved evidence screenshots and does not automate your personal/default browser profile.

Focused web inspection waits briefly for loading states to settle. If a consent or location modal blocks the screen, dismiss it and wait for the content you care about in the same package-only call:

npx -y @aarwitz/tapp@latest look https://example.com --tap "Not now" --wait-for "Dashboard"

npx -y @aarwitz/tapp@latest look https://example.com --tree --tap "Not now" --wait-for "Dashboard" --json

Android:

npx -y @aarwitz/tapp@latest explore path/to/app-debug.apk --platform andr

Only the beginning is shown; read the rest in the repo

Tapp

What it does

Install

Install Node.js

Open the Claude desktop app’s settings file

Paste these settings and save the file

Quit Claude and open it again

Try it

What you can do instead

Install Node.js

Open Terminal

Paste this command and press Enter

Type /mcp in Claude Code

Try it

Install Node.js

Click this button to open Cursor

Open the AI chat in Cursor in Agent mode

Try it

Install Node.js

Click this button to open VS Code

Open the AI chat in VS Code in Agent mode

Try it

Installed on your computer

At a glance

Which apps can use it

Related guides

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Discussion

User reviews

Compared with others in Developer toolsi

Common questions

Others in the same category

REA

GitHub

Serena MCP: the IDE for your agent

README from the maker

Tapp

Give Tapp to your coding agent

npm CLI quickstart

Build/start the detected web target, ground the first UI Map, then stop it.

Or build/install the detected Xcode target, ground the map, and persist the validated scheme.

Or connect to an already-running owned URL:

If the app has roles/accounts, bind names once; values stay in local/CI secrets.

Review-only path: tapp init . → tapp plan show → tapp plan review --approve ...

After approved drafts replay and are promoted, establish the selected target's baseline

through the ordinary full gate, then generate the reviewable GitHub workflow.