diff --git a/Sources/ContainerRegistry/RegistryClient+ImageConfiguration.swift b/Sources/ContainerRegistry/RegistryClient+ImageConfiguration.swift
index 939c42c..64e141d 100644
--- a/Sources/ContainerRegistry/RegistryClient+ImageConfiguration.swift
+++ b/Sources/ContainerRegistry/RegistryClient+ImageConfiguration.swift
@@ -15,29 +15,30 @@
 extension RegistryClient {
     /// Get an image configuration record from the registry.
     /// - Parameters:
-    ///   - repository: Name of the repository containing the record.
+    ///   - image: Reference to the image containing the record.
     ///   - digest: Digest of the record.
     /// - Returns: The image confguration record stored in `repository` with digest `digest`.
     /// - Throws: If the blob cannot be decoded as an `ImageConfiguration`.
     ///
     /// Image configuration records are stored as blobs in the registry.  This function retrieves the requested blob and tries to decode it as a configuration record.
-    public func getImageConfiguration(repository: String, digest: String) async throws -> ImageConfiguration {
-        try await getBlob(repository: repository, digest: digest)
+    public func getImageConfiguration(forImage image: ImageReference, digest: String) async throws -> ImageConfiguration
+    {
+        try await getBlob(repository: image.repository, digest: digest)
     }
 
     /// Upload an image configuration record to the registry.
     /// - Parameters:
-    ///   - repository: Name of the repository in which to store the record.
+    ///   - image: Reference to the image associated with the record.
     ///   - configuration: An image configuration record
     /// - Returns: An `ContentDescriptor` referring to the blob stored in the registry.
     /// - Throws: If the blob upload fails.
     ///
     /// Image configuration records are stored as blobs in the registry.  This function encodes the provided configuration record and stores it as a blob in the registry.
-    public func putImageConfiguration(repository: String, configuration: ImageConfiguration) async throws
+    public func putImageConfiguration(forImage image: ImageReference, configuration: ImageConfiguration) async throws
         -> ContentDescriptor
     {
         try await putBlob(
-            repository: repository,
+            repository: image.repository,
             mediaType: "application/vnd.oci.image.config.v1+json",
             data: configuration
         )
diff --git a/Sources/containertool/Extensions/RegistryClient+Layers.swift b/Sources/containertool/Extensions/RegistryClient+Layers.swift
index d6d344d..ccc79b1 100644
--- a/Sources/containertool/Extensions/RegistryClient+Layers.swift
+++ b/Sources/containertool/Extensions/RegistryClient+Layers.swift
@@ -16,23 +16,23 @@ import struct Foundation.Data
 import ContainerRegistry
 
 extension RegistryClient {
-    func getImageManifest(repository: String, reference: String, architecture: String) async throws -> ImageManifest {
+    func getImageManifest(forImage image: ImageReference, architecture: String) async throws -> ImageManifest {
         // We pushed the amd64 tag but it points to a single-architecture index, not directly to a manifest
         // if we get an index we should get a manifest, otherwise we might get a manifest directly
 
         do {
             // Try to retrieve a manifest.   If the object with this reference is actually an index, the content-type will not match and
             // an error will be thrown.
-            return try await getManifest(repository: repository, reference: reference)
+            return try await getManifest(repository: image.repository, reference: image.reference)
         } catch {
             // Try again, treating the top level object as an index.
             // This could be more efficient if the exception thrown by getManfiest() included the data it was unable to parse
-            let index = try await getIndex(repository: repository, reference: reference)
+            let index = try await getIndex(repository: image.repository, reference: image.reference)
             guard let manifest = index.manifests.first(where: { $0.platform?.architecture == architecture }) else {
                 throw "Could not find a suitable base image for \(architecture)"
             }
             // The index should not point to another index;   if it does, this call will throw a final error to be handled by the caller.
-            return try await getManifest(repository: repository, reference: manifest.digest)
+            return try await getManifest(repository: image.repository, reference: manifest.digest)
         }
     }
 
diff --git a/Sources/containertool/containertool.swift b/Sources/containertool/containertool.swift
index db19ea1..d3c873b 100644
--- a/Sources/containertool/containertool.swift
+++ b/Sources/containertool/containertool.swift
@@ -129,14 +129,13 @@ enum AllowHTTP: String, ExpressibleByArgument, CaseIterable { case source, desti
         let baseimage_config: ImageConfiguration
         if let source {
             baseimage_manifest = try await source.getImageManifest(
-                repository: baseimage.repository,
-                reference: baseimage.reference,
+                forImage: baseimage,
                 architecture: architecture
             )
             log("Found base image manifest: \(baseimage_manifest.digest)")
 
             baseimage_config = try await source.getImageConfiguration(
-                repository: baseimage.repository,
+                forImage: baseimage,
                 digest: baseimage_manifest.config.digest
             )
             log("Found base image configuration: \(baseimage_manifest.config.digest)")
@@ -204,7 +203,7 @@ enum AllowHTTP: String, ExpressibleByArgument, CaseIterable { case source, desti
         )
 
         let config_blob = try await destination.putImageConfiguration(
-            repository: destination_image.repository,
+            forImage: destination_image,
             configuration: configuration
         )
 
diff --git a/Tests/ContainerRegistryTests/SmokeTests.swift b/Tests/ContainerRegistryTests/SmokeTests.swift
index 5969d04..d94c7a6 100644
--- a/Tests/ContainerRegistryTests/SmokeTests.swift
+++ b/Tests/ContainerRegistryTests/SmokeTests.swift
@@ -185,6 +185,7 @@ struct SmokeTests {
 
     @Test func testPutAndGetImageConfiguration() async throws {
         let repository = "testputandgetimageconfiguration"  // repository name must be lowercase
+        let image = ImageReference(registry: "registry", repository: repository, reference: "latest")
 
         let configuration = ImageConfiguration(
             created: "1996-12-19T16:39:57-08:00",
@@ -195,12 +196,12 @@ struct SmokeTests {
             history: [.init(created: "1996-12-19T16:39:57-08:00", author: "test", created_by: "smoketest")]
         )
         let config_descriptor = try await client.putImageConfiguration(
-            repository: repository,
+            forImage: image,
             configuration: configuration
         )
 
         let downloaded = try await client.getImageConfiguration(
-            repository: repository,
+            forImage: image,
             digest: config_descriptor.digest
         )