Driftcheck

Name: Driftcheck
Author: wilsonvargas

by wilsonvargasversion 0.1.1i★ –iRuns on your computer

Registry nameio.github.wilsonvargas/driftcheck

Install

Overview

Description from the maker (original English)

Compares a mobile app screen (Android or iOS Simulator) with its Figma design and suggests fixes.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Design, images & audio
You need to fill in: FIGMA_TOKEN

Install

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

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: FIGMA_TOKEN, DRIFTCHECK_OUTPUT, DRIFTCHECK_EXPORTS

Values marked secret are keys to your account. Never share them or paste them into a chat.

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "driftcheck": {
      "command": "dnx",
      "args": [
        "Driftcheck",
        "--yes"
      ],
      "env": {
        "FIGMA_TOKEN": "your-value",
        "DRIFTCHECK_OUTPUT": "your-value",
        "DRIFTCHECK_EXPORTS": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add driftcheck --env FIGMA_TOKEN=your-value --env DRIFTCHECK_OUTPUT=your-value --env DRIFTCHECK_EXPORTS=your-value -- dnx Driftcheck --yes

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "driftcheck": {
      "command": "dnx",
      "args": [
        "Driftcheck",
        "--yes"
      ],
      "env": {
        "FIGMA_TOKEN": "your-value",
        "DRIFTCHECK_OUTPUT": "your-value",
        "DRIFTCHECK_EXPORTS": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "driftcheck": {
      "type": "stdio",
      "command": "dnx",
      "args": [
        "Driftcheck",
        "--yes"
      ],
      "env": {
        "FIGMA_TOKEN": "your-value",
        "DRIFTCHECK_OUTPUT": "your-value",
        "DRIFTCHECK_EXPORTS": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

FIGMA_TOKEN secret env
Figma Personal Access Token (scope File content: Read-only). Optional if you export frames with the Driftcheck Figma plugin.
DRIFTCHECK_OUTPUT env
Folder for captures, reports and the Figma cache. Default: driftcheck in the temp folder.
DRIFTCHECK_EXPORTS env
Folder where Figma plugin exports are looked up. Default: Downloads.

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

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 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account wilsonvargas, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– 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

Compared with others in Design, images & audioi

More stars than 0% of the other 2189 servers in this category
Published to the registry more recently than 76% of the other 2189 servers in this category
Basic checks equal to or better than 100% of the other 2189 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 Driftcheck safe?

It passed 1 of 1 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?

You need to fill in: FIGMA_TOKEN

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 –, and the latest version (0.1.1) reached the registry 10 days ago.

Which apps can use it?

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

What can I use instead?

In the same category: Figma Context MCP, Claude Real Video, Figma MCP Server

Alternatives

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

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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.

Driftcheck

Catch UI drift before your users do.

Your AI agent compares the app on the emulator with its Figma design, then fixes the differences.

Open the interactive report → · Design: Paylo kit by Marvilo (CC BY 4.0)

Driftcheck is a local MCP server. It captures the screen of an Android device or the iOS Simulator, compares it 1:1 with the Figma frame and gives your agent what it needs to close the gap:

What's different: position, size, text, font, colors, corner radius, borders, and missing icons or images, including layers with no text, found by how they look.
How to fix it, written with your framework's properties: Margin, android:layout_marginTop, Modifier.padding, .frame, EdgeInsets…
A fidelity score that tracks progress from one fix to the next, and an HTML report to share with your team.

It works with real-world design kits, where layers are called Frame or Text, and without a Figma token through the Driftcheck Figma plugin.

Quick start

You need the .NET 10 SDK, plus adb for Android or Xcode for the iOS Simulator. Install Driftcheck in one click:

VS Code asks for your Figma token; leave it empty to use the Figma plugin instead. In Cursor, add the token to FIGMA_TOKEN in the server's configuration afterwards.

Or add it to any MCP client by hand; dotnet dnx downloads it from NuGet the first time:

"mcpServers": { "driftcheck": { "command": "dotnet", "args": ["dnx", "Driftcheck", "--yes"], "env": { "FIGMA_TOKEN": " " } } } }

With Claude Code:

claude mcp add driftcheck -e FIGMA_TOKEN=<your Figma token> -- dotnet dnx Driftcheck --yes

Then run your app and ask your agent:

Compare the app on the emulator with https://www.figma.com/design/…?node-id=… and fix the differences.

What your agent gets back

compare_screen answers with a report the agent can act on (excerpt from the demo):

**Fidelity: 75 %** — 15 of 20 elements as in Figma

Element	Property	Figma	App
Nice to meet you	height	31.5	25.5
Text "Sign up with Google"	x	131.9	125
Shape "Sign up"	background	#DBC6F8	#BAD1BB

How to fix it

Nice to meet you
The glyphs don't measure the same as in Figma; check the font: in Figma it is Inter 32 weight 600. FontFamily="Inter", FontSize="32", CharacterSpacing
Shape "Sign up"
BackgroundColor="#9E56FF" (it renders as #DBC6F8 in the design: the layer or a container has opacity)

Design non-text layers not found in the app (1)

Icon (x=108.2 y=392.3 w=20 h=20) — Missing a 20×20 dp icon (the Figma layer is 24×24)

Along with it come report.html (the interactive report above: slider, opacity, diff and side by side), side_by_side.png and diff.png.

Supported platforms

Device	How it reads the screen
Android emulator or device	`adb`: `screencap` + `uiautomator dump` (the `AutomationId` is the `resource-id`)
iOS Simulator (macOS)	`simctl` + an XCUITest helper that reads the accessibility tree (the `AutomationId` is the `accessibilityIdentifier`)

Fix suggestions are written for .NET MAUI, Android views, Jetpack Compose, UIKit, SwiftUI and Flutter, or in plain terms if you don't pass a framework. The comparison itself doesn't depend on the framework: it works from what's on the screen.

MCP tools

Tool	Use
`list_devices`	Connected Android devices and booted iOS simulators
`get_design_specs`	Sizes, colors, texts and fonts of the frame (before writing the UI code)
`capture_screen`	Capture + app elements with their `AutomationId`
`compare_screen`	Full design vs. app comparison: fidelity, differences, how to fix them and `report.html`
`import_design`	Imports a `.driftcheck.json` from the Figma plugin that ended up outside Downloads

How it works

Driftcheck downloads the frame once and keeps it in a local cache, recomputes Figma's auto layout, and matches layers to app elements by AutomationId, by visible text or by position. Texts are compared by their visible glyphs rather than their boxes, non-text layers are found in the screenshot by how they look, and a device slightly wider or narrower than the frame is handled by anchoring each element where it fits best. The full walkthrough is in How Driftcheck compares.

Figma API limits

Figma limits how many calls a token can make, and on some seat types the quota is very low: once it runs out, it responds 429 with waits of days. That's why:

The JSON and PNG of each frame are stored in a local cache and reused on every comparison. Pass refresh=true to get_design_specs or compare_screen to download a frame that changed in Figma.
If Figma responds 429, the error says how long to wait.
Without a token or quota, the Figma plugin in tools/figma-export-plugin exports the frame (JSON + 2x render) to a .driftcheck.json file without using the REST API. If it lands in Downloads, Driftcheck picks it up on its own from the frame link; if it lands in another folder, import it with import_design. See the plugin README.

Requirements

.NET 10 SDK
For Android: Android SDK with adb (detected from ANDROID_HOME, ANDROID_SDK_ROOT or the default paths on Windows and macOS)
For iOS: macOS with Xcode and a booted simulator. No idb or WebDriverAgent needed
A FIGMA_TOKEN environment variable with a Figma Personal Access Token (scope *File content: Read-only*), or the Figma plugin to work without the API
Optional: DRIFTCHECK_OUTPUT to change the output folder (default: driftcheck in the temp folder)
Optional: DRIFTCHECK_EXPORTS to change where plugin exports are looked up (default: Downloads)

Current limitations

iOS on the simulator only (not on physical devices).
Visible area only (no scrolling).
Doesn't measure font size in the app (uiautomator and XCUITest don't expose it); get_design_specs provides it as a reference.

Running from source

git clone https://github.com/wilsonvargas/Driftcheck.git

cd Driftcheck dotnet build src/Driftcheck.Mcp

The .mcp.json at the root registers the server for MCP clients that read it when opening this folder. To use it from another project, add the server to your client's MCP configuration:

"mcpServers": { "driftcheck": { "command": "dotnet", "args": [" /src/Driftcheck.Mcp/bin/Debug/net10.0/Driftcheck.Mcp.dll"] } } }

Repository layout

src/Driftcheck.Mcp — MCP server
tools/ios-accessibility-helper — UI test that dumps the iOS Simulator accessibility tree (copied next to the server on build)
tools/figma-export-plugin — Figma plugin that exports a frame without the REST API
samples/PayloMaui — MAUI test app with screens from the Paylo kit by Marvilo (CC BY 4.0) For the iOS Simulator: dotnet build -f net10.0-ios -p:TargetFrameworks=net10.0-ios (limiting TargetFrameworks avoids requiring the Mac Catalyst workload), then xcrun simctl install booted bin/Debug/net10.0-ios/iossimulator-arm64/PayloMaui.app and xcrun simctl launch booted com.companyname.paylomaui. The Xcode version must be the one the iOS workload asks for; if several are installed, pick it with DEVELOPER_DIR.
samples/PayloNative — the same sign-up screen with native Android views (Java, no MAUI or AndroidX), to check that the comparison doesn't depend on MAUI. ./build.ps1 builds it with the SDK tools (no Gradle) and installs it on the emulator
samples/PayloIos — the same screen with native iOS views (UIKit in Swift, no MAUI or storyboard). ./build.sh builds it with swiftc (no Xcode project) and installs it on the booted simulator
tests/Driftcheck.Tests — comparer tests with synthetic screens
docs — the detailed comparison walkthrough and the demo report published on GitHub Pages

To compare the sample apps, open the Paylo kit in the Figma

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

Driftcheck

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

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

Compared with others in Design, images & audioi

Common questions

Alternatives

Figma Context MCP

Claude Real Video

Figma MCP Server

README from the maker

Quick start

What your agent gets back

How to fix it

Design non-text layers not found in the app (1)

Supported platforms

MCP tools

How it works

Figma API limits

Requirements

Current limitations

Running from source

Repository layout