Everything works well and good structure.

Sources/MusicBrainz/MusicBrainzCoordinator.swift

@@ -0,0 +1,37 @@
+import Foundation
+
+#if canImport(FoundationNetworking)
+	import FoundationNetworking
+#endif
+
+public actor MusicBrainzCoordinator {
+	private var nextAvailableTime: ContinuousClock.Instant = .now
+	private let clock = ContinuousClock()
+	private let session: URLSession
+
+	public init(session: URLSession = .shared) {
+		self.session = session
+	}
+
+	public func perform(_ request: URLRequest) async throws(MusicBrainzError) -> (Data, URLResponse)
+	{
+		let now = clock.now
+		let executionTime = max(now, nextAvailableTime)
+		nextAvailableTime = executionTime + .seconds(1)
+		let delay = now.duration(to: executionTime)
+
+		if delay > .zero {
+			do {
+				try await Task.sleep(for: delay)
+			} catch {
+				throw .coordinator(error)
+			}
+		}
+
+		do {
+			return try await session.data(for: request)
+		} catch {
+			throw .coordinator(error)
+		}
+	}
+}