Raycast script command that extracts a UUID from selected text or clipboard and copies it to the clipboard. See https://www.raycast.com/blog/getting-started-with-script-commands for more info.

copy-uuid.swift

#!/usr/bin/env swift
// Required parameters:
// @raycast.schemaVersion 1
// @raycast.title Copy UUID
// @raycast.mode silent
// @raycast.packageName Developer Tools

// Optional parameters:
// @raycast.icon ./copy-uuid.png
// @raycast.author Rix1
// @raycast.description Extracts a UUID from selected text or clipboard and copies it to the clipboard.

import AppKit
import Foundation

func extractUUID(from text: String) -> String? {
    let pattern = "[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}"
    let regex = try? NSRegularExpression(pattern: pattern, options: .caseInsensitive)
    let range = NSRange(location: 0, length: text.utf16.count)
    return regex?.firstMatch(in: text, options: [], range: range).flatMap {
        Range($0.range, in: text).map { String(text[$0]) }
    }
}

// Get text from pasteboard
func getPasteboardText() -> String? {
    return NSPasteboard.general.string(forType: .string)
}

func copyToPasteboard(_ text: String) {
    let pasteboard = NSPasteboard.general
    pasteboard.clearContents()
    pasteboard.setString(text, forType: .string)
}

// Simulate CMD+C to get selected text
func getSelectedText() -> String? {
    // Save current pasteboard content
    let pasteboard = NSPasteboard.general
    let oldContent = pasteboard.string(forType: .string)

    // Simulate CMD+C
    let source = CGEventSource(stateID: .combinedSessionState)
    let keyDown = CGEvent(keyboardEventSource: source, virtualKey: 0x08, keyDown: true)
    let keyUp = CGEvent(keyboardEventSource: source, virtualKey: 0x08, keyDown: false)

    keyDown?.flags = .maskCommand
    keyUp?.flags = .maskCommand

    keyDown?.post(tap: .cghidEventTap)
    keyUp?.post(tap: .cghidEventTap)

    // Small delay to ensure the pasteboard is updated
    usleep(50000)  // 50ms delay

    let newContent = pasteboard.string(forType: .string)

    // Restore original content if it existed
    if let oldContent = oldContent {
        pasteboard.clearContents()
        pasteboard.setString(oldContent, forType: .string)
    }

    return newContent
}

// Main logic
if let selectedText = getSelectedText(), !selectedText.isEmpty {
    if let uuid = extractUUID(from: selectedText) {
        copyToPasteboard(uuid)
        print("Copied UUID: \(uuid)")
    } else {
        print("No UUID found in selected text.")
    }
} else if let clipboardText = getPasteboardText(), !clipboardText.isEmpty {
    if let uuid = extractUUID(from: clipboardText) {
        copyToPasteboard(uuid)
        print("Copied UUID: \(uuid)")
    } else {
        print("No UUID found in clipboard.")
    }
} else {
    print("No text in selected text or clipboard.")
}

Download this icon and place it in the same folder as the script command (or somewhere else, just update the relative path in L9:

// @raycast.icon ./copy-uuid.png