# Driftcheck (nuget · Driftcheck)

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

- Trust score: 67/100 (medium)
- Change this week: 0
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- nuget · `Driftcheck`: 67/100 (this document), [markdown](https://verifymcp.io/servers/wilsonvargas-driftcheck/driftcheck.md), [page](https://verifymcp.io/servers/wilsonvargas-driftcheck/driftcheck)

## Channel facts

- Registry: `nuget`
- Package: `Driftcheck`
- Version: `0.1.1`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Supply Chain Security**: 88/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - Install-script risk not yet assessed.
  - No production dependencies, so there is no dependency health to assess.
- **Provenance & Transparency**: 48/100
  - Source repository is publicly reachable at the declared URL.
  - Build provenance not yet verified.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 8 days ago).
  - Publishes a security disclosure policy (SECURITY.md).
- **Schema Quality & AI Usability**: 71/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 786 tokens (~157/item across 5 items; 5 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

**Unverified: 1 category.** A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

## Install

### How do I install the Driftcheck MCP server?

Driftcheck runs locally as a NuGet package, launched with dnx Driftcheck@0.1.1 --yes. Ready-made configuration for Claude, Cursor, VS Code, Codex and 3 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add wilsonvargas-driftcheck -- dnx Driftcheck@0.1.1 --yes
```

### Cursor

```json
{
  "mcpServers": {
    "wilsonvargas-driftcheck": {
      "command": "dnx",
      "args": [
        "Driftcheck@0.1.1",
        "--yes"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "wilsonvargas-driftcheck": {
      "command": "dnx",
      "args": [
        "Driftcheck@0.1.1",
        "--yes"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add wilsonvargas-driftcheck -- dnx Driftcheck@0.1.1 --yes
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "wilsonvargas-driftcheck": {
      "type": "local",
      "command": [
        "dnx",
        "Driftcheck@0.1.1",
        "--yes"
      ],
      "enabled": true
    }
  }
}
```

### Hermes

```yaml
mcp_servers:
  wilsonvargas-driftcheck:
    command: "dnx"
    args: ["Driftcheck@0.1.1", "--yes"]
```

### Netclaw

```json
{
  "McpServers": {
    "wilsonvargas-driftcheck": {
      "Transport": "stdio",
      "Command": "dnx",
      "Arguments": [
        "Driftcheck@0.1.1",
        "--yes"
      ]
    }
  }
}
```

### Other

```json
{
  "mcpServers": {
    "wilsonvargas-driftcheck": {
      "command": "dnx",
      "args": [
        "Driftcheck@0.1.1",
        "--yes"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-28 (score 67, +15)

- [security improvement] Malware scan: unverified → pass

### 2026-10-27 (score 52)

First indexed and scored.

## MCP tools (5)

### `compare_screen` (~402 tokens)

Compares the app's current screen on the device (Android or iOS Simulator) with a Figma frame. Matches Figma layers to app elements by visible text, name = AutomationId or position, and reports differences in position, size, text and background color. Non-text layers (buttons, fields, lines, icons, images) are found in the screenshot by how they look, comparing box, fill, corner radius, border and content. Reports fidelity (% of elements as in Figma, and how much it changed since the previous comparison) and how to fix each difference with the framework's properties. Generates report.html (interactive report to show the user), side_by_side.png and diff.png (in diff.png: green = matches, orange = differs, dotted blue = where Figma says it should be). Open the images for a visual review. If the screenshot doesn't look like the design (a loading screen), it waits and captures again up to 3 times.

Input parameters:

- `colorTolerance` (number): Color tolerance (RGB distance 0–441). Default 24.
- `deviceSerial` (string|null): Device serial or UDID. Optional: uses the first one.
- `figmaUrl` (string, required): Figma frame URL (Copy link to selection), must include ?node-id=
- `framework` (string|null): App framework, to write the suggestions with its properties: maui, android (XML views), compose, uikit, swiftui or flutter. Optional.
- `projectPath` (string|null): App project folder. Optional: if it has files newer than the installed app, the report warns that the app needs to be rebuilt and reinstalled.
- `refresh` (boolean): true to download the Figma frame again instead of using the local cache. Use it only if the design changed: each download uses Figma API quota.
- `tolerance` (number): Position/size tolerance in dp or pt. Default 2.

### `capture_screen` (~102 tokens)

Takes a screenshot of the device (Android or iOS Simulator) and lists the visible elements with their AutomationId (resource-id on Android, accessibilityIdentifier on iOS), text and bounds in dp or pt. On iOS it takes a few more seconds: it reads the accessibility tree with a UI test, which is built the first time.

Input parameters:

- `deviceSerial` (string|null): Device serial or UDID (from list_devices). Optional: uses the first one.

### `list_devices` (~32 tokens)

Lists the Android devices and emulators connected through adb and, on macOS, the booted iOS simulators.

### `get_design_specs` (~159 tokens)

Returns the measurements of the Figma frame: position, size, colors, texts and typography of every named layer. Use it BEFORE writing a screen's UI code. If deviceWidth is passed, values are scaled to that width in dp or pt.

Input parameters:

- `deviceWidth` (number|null): Logical width of the target device in dp or pt (e.g. 412 for Pixel 7, 402 for iPhone 17). Optional.
- `figmaUrl` (string, required): Figma frame URL (Copy link to selection), must include ?node-id=
- `refresh` (boolean): true to download the Figma frame again instead of using the local cache. Use it only if the design changed: each download uses Figma API quota.

### `import_design` (~91 tokens)

Imports a .driftcheck.json file exported with the Driftcheck plugin in Figma, to compare without the Figma API (no token or no quota). Exports in the Downloads folder are picked up on their own; this is for the ones that ended up in another folder. Then compare with the frame link, as usual.

Input parameters:

- `path` (string, required): Path of the .driftcheck.json file

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/wilsonvargas-driftcheck/driftcheck#diagnostics

## Score history

- 2026-11-05: 67
- 2026-11-04: 67
- 2026-11-03: 67
- 2026-11-02: 67
- 2026-11-01: 67
- 2026-10-31: 67
- 2026-10-30: 67
- 2026-10-29: 67
- 2026-10-28: 67
- 2026-10-27: 52

## Common questions

### What is the Driftcheck MCP server?

Driftcheck is an MCP server listed in the public MCP registry as io.github.wilsonvargas/driftcheck. Compares a mobile app screen (Android or iOS Simulator) with its Figma design and suggests fixes. This page covers its NuGet package (Driftcheck).

### Is the Driftcheck MCP server safe to use?

Driftcheck scores 67 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Driftcheck MCP server expose?

Driftcheck exposes 5 tools: compare_screen, capture_screen, list_devices, get_design_specs, import_design. Their descriptions and schemas cost roughly 786 tokens of context every time the server is loaded.

### Is the Driftcheck MCP server still maintained?

Driftcheck is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the Driftcheck MCP server under?

Driftcheck declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- NuGet package: https://www.nuget.org/packages/Driftcheck
- Socket report: https://socket.dev/nuget/package/Driftcheck
- Repository: https://github.com/wilsonvargas/Driftcheck
- Changelog RSS feed: https://verifymcp.io/servers/wilsonvargas-driftcheck/driftcheck.xml
- Changelog JSON feed: https://verifymcp.io/servers/wilsonvargas-driftcheck/driftcheck.json
- HTML version of this page: https://verifymcp.io/servers/wilsonvargas-driftcheck/driftcheck