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MCP iOS Simulator Screenshot

by yorifuji
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
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Screenshot des MCP iOS-Simulators

Ein Server, der mithilfe des Model Context Protocol (MCP) Screenshots vom iOS-Simulator aufnimmt.

Überblick

Dieses Projekt implementiert einen MCP-Protokollserver, der den aktuellen Bildschirm des iOS-Simulators erfasst und in einem angegebenen Verzeichnis speichert.

Related MCP server: Screeny MCP Server

Aufstellen

Cline und Roo Code

Für Cline- und Roo-Code ist das grundlegende Format:

{
  "mcpServers": {
    "mcp-ios-simulator-screenshot": {
      "command": "npx",
      "args": ["-y", "mcp-ios-simulator-screenshot"]
    }
  }
}

Wenn Sie das Repository klonen, können Sie die folgende Konfiguration verwenden:

{
  "mcpServers": {
    "mcp-ios-simulator-screenshot": {
      "command": "node",
      "args": ["/path/to/mcp-ios-simulator-screenshot/build/index.js"]
    }
  }
}

Cursor, Claude Desktop

Für Cursor und Claude Desktop müssen Sie --output-dir und das Ausgabeverzeichnis angeben:

{
  "mcpServers": {
    "mcp-ios-simulator-screenshot": {
      "command": "npx",
      "args": [
        "mcp-ios-simulator-screenshot",
        "--output-dir",
        "/path/to/your/output/directory"
      ]
    }
  }
}

MCP-Tool-Parameter

get_screenshot

Erstellt einen Screenshot vom iOS-Simulator und speichert ihn im angegebenen Verzeichnis.

Parameter

Typ

Beschreibung

Standardwert

Ausgabedateiname

Schnur

Ausgabedateiname

Zeitstempel.png

Ausgabeverzeichnisname

Schnur

Unterverzeichnisname für Screenshots

.Screenshots

Größe ändern

Boolescher Wert

Ob die Bildgröße auf etwa VGA-Größe geändert werden soll

WAHR

maximale Breite

ganze Zahl

Maximale Breite für die Größenänderung (Pixel)

640

Geräte-ID

Schnur

Geben Sie ein Simulatorgerät an

gebootetes Gerät

Ausgabeformat

Bei Erfolg:

{
  "success": true,
  "message": "iOS Simulator screenshot saved successfully",
  "filePath": ".screenshots/simulator_2025-04-10T16-51-16-755Z.png",
  "metadata": {
    "width": 1170,
    "height": 2532,
    "format": "png",
    "size": 382946,
    "timestamp": "2025-04-10T16:51:16.755Z"
  },
  "serverConfig": {
    "commandLineArgs": {
      "outputDir": "/Users/username/Desktop" // Only included when --output-dir is specified
    }
  }
}

Hinweis: Das Feld serverConfig.commandLineArgs.outputDir ist nur dann in der Antwort enthalten, wenn beim Starten des Servers der Parameter --output-dir angegeben wird.

{
  "success": false,
  "message": "Error capturing iOS Simulator screenshot: [error message]",
  "error": {
    "code": "ENOENT",
    "command": "xcrun simctl io booted screenshot --type=png -",
    "stderr": "No matching devices found."
  }
}

Fehlerbehebung

  • Wenn Sie keine Screenshots aufnehmen können :

    • Überprüfen Sie, ob der iOS-Simulator ausgeführt wird

    • Überprüfen Sie, ob Xcode-Befehlszeilentools installiert sind

    • Überprüfen Sie, ob der Befehl xcrun simctl io booted screenshot direkt ausgeführt werden kann

  • Wenn Berechtigungsfehler auftreten :

    • Überprüfen Sie, ob Sie Schreibberechtigungen für das Ausgabeverzeichnis haben

Anforderungen

  • Node.js 16.0.0 oder höher

  • macOS (iOS-Simulator erforderlich)

  • Xcode-Befehlszeilentools

Technologie-Stack

  • Typoskript

  • Node.js

  • MCP SDK (@modelcontextprotocol/sdk)

Lizenz

MIT

Weitere Sprachen

Available Tools

1 tool
get_screenshotC

Capture a screenshot from iOS Simulator

ParametersJSON Schema
NameRequiredDescriptionDefault
output_filenameNoOutput filename (if not specified, timestamp.png will be used)
output_directory_nameNoSubdirectory name for screenshots (if not specified, .screenshots will be used).screenshots
resizeNoWhether to resize the image to approximately VGA size
max_widthNoMaximum width for resizing (pixels)
device_idNoSpecify a simulator device (if not specified, the booted device will be used)

TDQS

C2.9/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries full burden for behavioral disclosure. 'Capture a screenshot' implies a read operation, but it doesn't specify whether this requires specific simulator states, permissions, or has side effects. The description lacks information about error conditions, what happens if no device is booted, or the format/location of output beyond what's in parameter descriptions.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, efficient sentence that states the core purpose without unnecessary words. It's appropriately sized for a straightforward tool and gets directly to the point. Every word earns its place in conveying the essential function.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a tool with no annotations and no output schema, the description is insufficiently complete. While the purpose is clear, it lacks important behavioral context about how the tool operates, what it returns, error handling, and dependencies. The description doesn't compensate for the absence of structured metadata that would help an agent understand the tool's behavior and constraints.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

With 100% schema description coverage, all parameters are well-documented in the schema itself. The description adds no additional parameter information beyond what's already in the schema descriptions. This meets the baseline expectation when schema coverage is complete, but doesn't provide extra semantic context.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('Capture') and target resource ('screenshot from iOS Simulator'), making the purpose immediately understandable. It lacks sibling differentiation, but since there are no sibling tools, this doesn't reduce clarity. The description is specific enough to distinguish this from other potential screenshot tools.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives, prerequisites, or context. It simply states what the tool does without indicating appropriate scenarios or limitations. While there are no sibling tools to differentiate from, the description offers no usage context whatsoever.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

  1. 1 tool update
    • First observedget_screenshot
Deploy Server
One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

TDQS

B3.1/5.0

Scored across 1 tool

Disambiguation5/5

With only one tool, there is no possibility of ambiguity or overlap between tools. The tool's purpose is singular and clearly defined, making it impossible for an agent to misselect between non-existent alternatives.

Naming Consistency5/5

A single tool inherently has perfect naming consistency, as there are no other tools to compare against. The tool name 'get_screenshot' follows a clear verb_noun pattern, which would be consistent if more tools existed.

Tool Count2/5

A single tool is too few for most practical server purposes, as it severely limits functionality and flexibility. While the server's name suggests a focused domain (iOS Simulator screenshots), one tool feels thin and incomplete for even basic operations like listing simulators or managing screenshots.

Completeness2/5

The tool surface is severely incomplete for the implied domain of iOS Simulator interactions. It only provides screenshot capture, with obvious gaps such as listing available simulators, starting/stopping simulators, or managing screenshot files, which are essential for a coherent workflow.

Maintenance

ActivityInactive
ResponsivenessNo issues

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