A Keyboard Maestro macro to copy the URLs from an Apple Reminders list to a text file.

copy_urls_from_reminders.kmmacros

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<array>
	<dict>
		<key>Activate</key>
		<string>Normal</string>
		<key>CreationDate</key>
		<real>657286652.24957097</real>
		<key>Macros</key>
		<array>
			<dict>
				<key>Actions</key>
				<array>
					<dict>
						<key>ActionUID</key>
						<integer>413</integer>
						<key>AllWindows</key>
						<false/>
						<key>AlreadyActivatedActionType</key>
						<string>Normal</string>
						<key>Application</key>
						<dict>
							<key>BundleIdentifier</key>
							<string>com.apple.reminders</string>
							<key>Name</key>
							<string>Reminders</string>
							<key>NewFile</key>
							<string>/System/Applications/Reminders.app</string>
						</dict>
						<key>MacroActionType</key>
						<string>ActivateApplication</string>
						<key>ReopenWindows</key>
						<false/>
						<key>TimeOutAbortsMacro</key>
						<true/>
					</dict>
					<dict>
						<key>ActionUID</key>
						<integer>429</integer>
						<key>MacroActionType</key>
						<string>Pause</string>
						<key>Time</key>
						<string>.7</string>
						<key>TimeOutAbortsMacro</key>
						<true/>
					</dict>
					<dict>
						<key>Action</key>
						<string>MoveAndClick</string>
						<key>ActionUID</key>
						<integer>415</integer>
						<key>Button</key>
						<integer>0</integer>
						<key>ClickCount</key>
						<integer>1</integer>
						<key>DisplayMatches</key>
						<false/>
						<key>DragHorizontalPosition</key>
						<string>0</string>
						<key>DragVerticalPosition</key>
						<string>0</string>
						<key>Fuzz</key>
						<integer>15</integer>
						<key>HorizontalPositionExpression</key>
						<string>800</string>
						<key>MacroActionType</key>
						<string>MouseMoveAndClick</string>
						<key>Modifiers</key>
						<integer>0</integer>
						<key>MouseDrag</key>
						<string>None</string>
						<key>Relative</key>
						<string>Absolute</string>
						<key>RelativeCorner</key>
						<string>TopLeft</string>
						<key>RestoreMouseLocation</key>
						<false/>
						<key>VerticalPositionExpression</key>
						<string>150</string>
					</dict>
					<dict>
						<key>ActionUID</key>
						<integer>424</integer>
						<key>Actions</key>
						<array>
							<dict>
								<key>ActionUID</key>
								<integer>433</integer>
								<key>MacroActionType</key>
								<string>Pause</string>
								<key>Time</key>
								<string>.7</string>
								<key>TimeOutAbortsMacro</key>
								<true/>
							</dict>
							<dict>
								<key>ActionUID</key>
								<integer>414</integer>
								<key>KeyCode</key>
								<integer>34</integer>
								<key>MacroActionType</key>
								<string>SimulateKeystroke</string>
								<key>Modifiers</key>
								<integer>256</integer>
								<key>ReleaseAll</key>
								<false/>
								<key>TargetApplication</key>
								<dict/>
								<key>TargetingType</key>
								<string>Front</string>
							</dict>
							<dict>
								<key>ActionUID</key>
								<integer>432</integer>
								<key>MacroActionType</key>
								<string>Pause</string>
								<key>Time</key>
								<string>.5</string>
								<key>TimeOutAbortsMacro</key>
								<true/>
							</dict>
							<dict>
								<key>Action</key>
								<string>MoveAndClick</string>
								<key>ActionUID</key>
								<integer>417</integer>
								<key>Button</key>
								<integer>0</integer>
								<key>ClickCount</key>
								<integer>1</integer>
								<key>DisplayMatches</key>
								<false/>
								<key>DragHorizontalPosition</key>
								<string>0</string>
								<key>DragVerticalPosition</key>
								<string>0</string>
								<key>Fuzz</key>
								<integer>15</integer>
								<key>HorizontalPositionExpression</key>
								<string>1600</string>
								<key>MacroActionType</key>
								<string>MouseMoveAndClick</string>
								<key>Modifiers</key>
								<integer>0</integer>
								<key>MouseDrag</key>
								<string>None</string>
								<key>Relative</key>
								<string>Absolute</string>
								<key>RelativeCorner</key>
								<string>TopLeft</string>
								<key>RestoreMouseLocation</key>
								<false/>
								<key>VerticalPositionExpression</key>
								<string>250</string>
							</dict>
							<dict>
								<key>ActionUID</key>
								<integer>418</integer>
								<key>KeyCode</key>
								<integer>0</integer>
								<key>MacroActionType</key>
								<string>SimulateKeystroke</string>
								<key>Modifiers</key>
								<integer>256</integer>
								<key>ReleaseAll</key>
								<false/>
								<key>TargetApplication</key>
								<dict/>
								<key>TargetingType</key>
								<string>Front</string>
							</dict>
							<dict>
								<key>ActionUID</key>
								<integer>421</integer>
								<key>KeyCode</key>
								<integer>8</integer>
								<key>MacroActionType</key>
								<string>SimulateKeystroke</string>
								<key>Modifiers</key>
								<integer>256</integer>
								<key>ReleaseAll</key>
								<false/>
								<key>TargetApplication</key>
								<dict/>
								<key>TargetingType</key>
								<string>Front</string>
							</dict>
							<dict>
								<key>ActionUID</key>
								<integer>428</integer>
								<key>KeyCode</key>
								<integer>53</integer>
								<key>MacroActionType</key>
								<string>SimulateKeystroke</string>
								<key>Modifiers</key>
								<integer>0</integer>
								<key>ReleaseAll</key>
								<false/>
								<key>TargetApplication</key>
								<dict/>
								<key>TargetingType</key>
								<string>Front</string>
							</dict>
							<dict>
								<key>ActionUID</key>
								<integer>434</integer>
								<key>MacroActionType</key>
								<string>Pause</string>
								<key>Time</key>
								<string>.2</string>
								<key>TimeOutAbortsMacro</key>
								<true/>
							</dict>
							<dict>
								<key>ActionUID</key>
								<integer>419</integer>
								<key>AllWindows</key>
								<false/>
								<key>AlreadyActivatedActionType</key>
								<string>Normal</string>
								<key>Application</key>
								<dict>
									<key>BundleIdentifier</key>
									<string>com.apple.TextEdit</string>
									<key>Name</key>
									<string>TextEdit</string>
									<key>NewFile</key>
									<string>/System/Applications/TextEdit.app</string>
								</dict>
								<key>MacroActionType</key>
								<string>ActivateApplication</string>
								<key>ReopenWindows</key>
								<false/>
								<key>TimeOutAbortsMacro</key>
								<true/>
							</dict>
							<dict>
								<key>ActionUID</key>
								<integer>431</integer>
								<key>MacroActionType</key>
								<string>Pause</string>
								<key>Time</key>
								<string>.5</string>
								<key>TimeOutAbortsMacro</key>
								<true/>
							</dict>
							<dict>
								<key>ActionUID</key>
								<integer>422</integer>
								<key>KeyCode</key>
								<integer>9</integer>
								<key>MacroActionType</key>
								<string>SimulateKeystroke</string>
								<key>Modifiers</key>
								<integer>256</integer>
								<key>ReleaseAll</key>
								<false/>
								<key>TargetApplication</key>
								<dict/>
								<key>TargetingType</key>
								<string>Front</string>
							</dict>
							<dict>
								<key>ActionUID</key>
								<integer>423</integer>
								<key>KeyCode</key>
								<integer>36</integer>
								<key>MacroActionType</key>
								<string>SimulateKeystroke</string>
								<key>Modifiers</key>
								<integer>0</integer>
								<key>ReleaseAll</key>
								<false/>
								<key>TargetApplication</key>
								<dict/>
								<key>TargetingType</key>
								<string>Front</string>
							</dict>
							<dict>
								<key>ActionUID</key>
								<integer>425</integer>
								<key>AllWindows</key>
								<false/>
								<key>AlreadyActivatedActionType</key>
								<string>Normal</string>
								<key>Application</key>
								<dict>
									<key>BundleIdentifier</key>
									<string>com.apple.reminders</string>
									<key>Name</key>
									<string>Reminders</string>
									<key>NewFile</key>
									<string>/System/Applications/Reminders.app</string>
								</dict>
								<key>MacroActionType</key>
								<string>ActivateApplication</string>
								<key>ReopenWindows</key>
								<false/>
								<key>TimeOutAbortsMacro</key>
								<true/>
							</dict>
							<dict>
								<key>ActionUID</key>
								<integer>430</integer>
								<key>MacroActionType</key>
								<string>Pause</string>
								<key>Time</key>
								<string>.7</string>
								<key>TimeOutAbortsMacro</key>
								<true/>
							</dict>
							<dict>
								<key>ActionUID</key>
								<integer>427</integer>
								<key>KeyCode</key>
								<integer>126</integer>
								<key>MacroActionType</key>
								<string>SimulateKeystroke</string>
								<key>Modifiers</key>
								<integer>0</integer>
								<key>ReleaseAll</key>
								<false/>
								<key>TargetApplication</key>
								<dict/>
								<key>TargetingType</key>
								<string>Front</string>
							</dict>
						</array>
						<key>CountExpression</key>
						<string>21</string>
						<key>MacroActionType</key>
						<string>Repeat</string>
						<key>TimeOutAbortsMacro</key>
						<true/>
					</dict>
				</array>
				<key>CreationDate</key>
				<real>659534570.99250603</real>
				<key>ModificationDate</key>
				<real>659544582.06644499</real>
				<key>Name</key>
				<string>copy_urls_from_reminders</string>
				<key>Triggers</key>
				<array/>
				<key>UID</key>
				<string>51E8A7AC-2791-42E4-A7CC-36106B4F4B56</string>
			</dict>
		</array>
		<key>Name</key>
		<string>Global Macro Group</string>
		<key>ToggleMacroUID</key>
		<string>4855913F-E55D-40BD-BA33-A951B0FAC3A2</string>
		<key>UID</key>
		<string>9EC93A15-A175-4162-B06E-757619AFC39D</string>
	</dict>
</array>
</plist>

Oh and I also tried OSAScript (the JS flavor), but it thinks there's no such field as "url" (lowercase or uppercase).

Ugh, also Reminders will start getting sluggish after a bit. Restart it every 50-100 rows...