diff --git a/scm-core/src/main/java/sonia/scm/repository/api/ModifyCommandBuilder.java b/scm-core/src/main/java/sonia/scm/repository/api/ModifyCommandBuilder.java
index dc3ed4a331..501a2ac3b0 100644
--- a/scm-core/src/main/java/sonia/scm/repository/api/ModifyCommandBuilder.java
+++ b/scm-core/src/main/java/sonia/scm/repository/api/ModifyCommandBuilder.java
@@ -15,6 +15,29 @@ import java.io.InputStream;
 import java.io.OutputStream;
 import java.util.function.Consumer;
 
+/**
+ * Use this {@link ModifyCommandBuilder} to make file changes to the head of a branch. You can
+ * <ul>
+ *   <li>create new files ({@link #createFile(String)}</li>
+ *   <li>modify existing files ({@link #modifyFile(String)}</li>
+ *   <li>delete existing files ({@link #deleteFile(String)}</li>
+ *   <li>move/rename existing files ({@link #moveFile(String, String)}</li>
+ * </ul>
+ *
+ * You can collect multiple changes before they are executed with a call to {@link #execute()}.
+ *
+ * <p>Example:
+ * <pre>
+ * commandBuilder
+ *     .setBranch("feature/branch")
+ *     .setCommitMessage("make some changes")
+ *     .setAuthor(new Person())
+ *     .createFile("file/to/create").withData(inputStream)
+ *     .deleteFile("old/file/to/delete")
+ *     .execute();
+ * </pre>
+ * </p>
+ */
 public class ModifyCommandBuilder {
 
   private final ModifyCommand command;
@@ -27,37 +50,127 @@ public class ModifyCommandBuilder {
     this.workdir = workdirProvider.createNewWorkdir();
   }
 
-  ModifyCommandBuilder setBranchToModify(String branchToModify) {
+  /**
+   * Set the branch that should be modified. The new commit will be made for this branch.
+   * @param branchToModify The branch to modify.
+   * @return This builder instance.
+   */
+  public ModifyCommandBuilder setBranchToModify(String branchToModify) {
     return this;
   }
 
-  ContentLoader createFile(String path) {
+  /**
+   * Create a new file. The content of the file will be specified in a subsequent call to
+   * {@link ContentLoader#withData(ByteSource)} or {@link ContentLoader#withData(InputStream)}.
+   * @param path The path and the name of the file that should be created.
+   * @return The loader to specify the content of the new file.
+   */
+  public ContentLoader createFile(String path) {
     return new ContentLoader(
       content -> request.addRequest(new ModifyCommandRequest.CreateFileRequest(path, content))
     );
   }
 
-  ContentLoader modifyFile(String path) {
+  /**
+   * Modify an existing file. The new content of the file will be specified in a subsequent call to
+   * {@link ContentLoader#withData(ByteSource)} or {@link ContentLoader#withData(InputStream)}.
+   * @param path The path and the name of the file that should be modified.
+   * @return The loader to specify the new content of the file.
+   */
+  public ContentLoader modifyFile(String path) {
     return new ContentLoader(
       content -> request.addRequest(new ModifyCommandRequest.ModifyFileRequest(path, content))
     );
   }
 
-  ModifyCommandBuilder deleteFile(String path) {
+  /**
+   * Delete an existing file.
+   * @param path The path and the name of the file that should be deleted.
+   * @return This builder instance.
+   */
+  public ModifyCommandBuilder deleteFile(String path) {
     request.addRequest(new ModifyCommandRequest.DeleteFileRequest(path));
     return this;
   }
 
-  ModifyCommandBuilder moveFile(String sourcePath, String targetPath) {
+  /**
+   * Move an existing file.
+   * @param sourcePath The path and the name of the file that should be moved.
+   * @param targetPath The new path and name the file should be moved to.
+   * @return This builder instance.
+   */
+  public ModifyCommandBuilder moveFile(String sourcePath, String targetPath) {
     request.addRequest(new ModifyCommandRequest.MoveFileRequest(sourcePath, targetPath));
     return this;
   }
 
-  String execute() {
+  /**
+   * Apply the changes and create a new commit with the given message and author.
+   * @return The revision of the new commit.
+   */
+  public String execute() {
     Preconditions.checkArgument(request.isValid(), "commit message, author and branch are required");
     return command.execute(request);
   }
 
+  /**
+   * Set the commit message for the new commit.
+   * @return This builder instance.
+   */
+  public ModifyCommandBuilder setCommitMessage(String message) {
+    request.setCommitMessage(message);
+    return this;
+  }
+
+  /**
+   * Set the author for the new commit.
+   * @return This builder instance.
+   */
+  public ModifyCommandBuilder setAuthor(Person author) {
+    request.setAuthor(author);
+    return this;
+  }
+
+  /**
+   * Set the branch the changes should be made upon.
+   * @return This builder instance.
+   */
+  public ModifyCommandBuilder setBranch(String branch) {
+    request.setBranch(branch);
+    return this;
+  }
+
+  public class ContentLoader {
+
+    private final Consumer<File> contentConsumer;
+
+    private ContentLoader(Consumer<File> contentConsumer) {
+      this.contentConsumer = contentConsumer;
+    }
+
+    /**
+     * Specify the data of the file using a {@link ByteSource}.
+     * @return The builder instance.
+     * @throws IOException If the data could not be read.
+     */
+    public ModifyCommandBuilder withData(ByteSource data) throws IOException {
+      File content = loadData(data);
+      contentConsumer.accept(content);
+      return ModifyCommandBuilder.this;
+    }
+
+    /**
+     * Specify the data of the file using an {@link InputStream}.
+     * @return The builder instance.
+     * @throws IOException If the data could not be read.
+     */
+    public ModifyCommandBuilder withData(InputStream data) throws IOException {
+      File content = loadData(data);
+      contentConsumer.accept(content);
+      return ModifyCommandBuilder.this;
+    }
+  }
+
   private File loadData(ByteSource data) throws IOException {
     File file = createTemporaryFile();
     data.copyTo(Files.asByteSink(file));
@@ -75,39 +188,4 @@ public class ModifyCommandBuilder {
   private File createTemporaryFile() throws IOException {
     return File.createTempFile("upload-", "", workdir);
   }
-
-  public ModifyCommandBuilder setCommitMessage(String message) {
-    request.setCommitMessage(message);
-    return this;
-  }
-
-  public ModifyCommandBuilder setAuthor(Person author) {
-    request.setAuthor(author);
-    return this;
-  }
-
-  public ModifyCommandBuilder setBranch(String branch) {
-    request.setBranch(branch);
-    return this;
-  }
-
-  public class ContentLoader {
-
-    private final Consumer<File> contentConsumer;
-
-    private ContentLoader(Consumer<File> contentConsumer) {
-      this.contentConsumer = contentConsumer;
-    }
-
-    public ModifyCommandBuilder withData(ByteSource data) throws IOException {
-      File content = loadData(data);
-      contentConsumer.accept(content);
-      return ModifyCommandBuilder.this;
-    }
-    public ModifyCommandBuilder withData(InputStream data) throws IOException {
-      File content = loadData(data);
-      contentConsumer.accept(content);
-      return ModifyCommandBuilder.this;
-    }
-  }
 }
diff --git a/scm-core/src/main/java/sonia/scm/repository/api/RepositoryService.java b/scm-core/src/main/java/sonia/scm/repository/api/RepositoryService.java
index 5807ffa998..080d66ebf2 100644
--- a/scm-core/src/main/java/sonia/scm/repository/api/RepositoryService.java
+++ b/scm-core/src/main/java/sonia/scm/repository/api/RepositoryService.java
@@ -40,6 +40,7 @@ import sonia.scm.repository.PreProcessorUtil;
 import sonia.scm.repository.Repository;
 import sonia.scm.repository.RepositoryPermissions;
 import sonia.scm.repository.spi.RepositoryServiceProvider;
+import sonia.scm.repository.util.WorkdirProvider;
 
 import java.io.Closeable;
 import java.io.IOException;
@@ -91,22 +92,25 @@ public final class RepositoryService implements Closeable {
   private final RepositoryServiceProvider provider;
   private final Repository repository;
   private final Set<ScmProtocolProvider> protocolProviders;
+  private final WorkdirProvider workdirProvider;
 
   /**
    * Constructs a new {@link RepositoryService}. This constructor should only
    * be called from the {@link RepositoryServiceFactory}.
-   *  @param cacheManager     cache manager
+   * @param cacheManager     cache manager
    * @param provider         implementation for {@link RepositoryServiceProvider}
    * @param repository       the repository
+   * @param workdirProvider
    */
   RepositoryService(CacheManager cacheManager,
-    RepositoryServiceProvider provider, Repository repository,
-    PreProcessorUtil preProcessorUtil, Set<ScmProtocolProvider> protocolProviders) {
+                    RepositoryServiceProvider provider, Repository repository,
+                    PreProcessorUtil preProcessorUtil, Set<ScmProtocolProvider> protocolProviders, WorkdirProvider workdirProvider) {
     this.cacheManager = cacheManager;
     this.provider = provider;
     this.repository = repository;
     this.preProcessorUtil = preProcessorUtil;
     this.protocolProviders = protocolProviders;
+    this.workdirProvider = workdirProvider;
   }
 
   /**
@@ -399,6 +403,27 @@ public final class RepositoryService implements Closeable {
     return new MergeCommandBuilder(provider.getMergeCommand());
   }
 
+  /**
+   * The modify command makes changes to the head of a branch. It is possible to
+   * <ul>
+   * <li>create new files</li>
+   * <li>delete existing files</li>
+   * <li>modify/replace files</li>
+   * <li>move files</li>
+   * </ul>
+   *
+   * @return instance of {@link ModifyCommandBuilder}
+   * @throws CommandNotSupportedException if the command is not supported
+   *                                      by the implementation of the repository service provider.
+   * @since 2.0.0
+   */
+  public ModifyCommandBuilder getModifyCommand() {
+    LOG.debug("create modify command for repository {}",
+      repository.getNamespaceAndName());
+
+    return new ModifyCommandBuilder(provider.getModifyCommand(), workdirProvider);
+  }
+
   /**
    * Returns true if the command is supported by the repository service.
    *
diff --git a/scm-core/src/main/java/sonia/scm/repository/api/RepositoryServiceFactory.java b/scm-core/src/main/java/sonia/scm/repository/api/RepositoryServiceFactory.java
index 8db3ab7546..fe2af9f9e1 100644
--- a/scm-core/src/main/java/sonia/scm/repository/api/RepositoryServiceFactory.java
+++ b/scm-core/src/main/java/sonia/scm/repository/api/RepositoryServiceFactory.java
@@ -61,6 +61,7 @@ import sonia.scm.repository.RepositoryManager;
 import sonia.scm.repository.RepositoryPermissions;
 import sonia.scm.repository.spi.RepositoryServiceProvider;
 import sonia.scm.repository.spi.RepositoryServiceResolver;
+import sonia.scm.repository.util.WorkdirProvider;
 import sonia.scm.security.ScmSecurityException;
 
 import java.util.Set;
@@ -256,7 +257,7 @@ public final class RepositoryServiceFactory
         }
 
         service = new RepositoryService(cacheManager, provider, repository,
-          preProcessorUtil, protocolProviders);
+          preProcessorUtil, protocolProviders, workdirProvider);
 
         break;
       }
@@ -373,4 +374,6 @@ public final class RepositoryServiceFactory
   private final Set<RepositoryServiceResolver> resolvers;
 
   private Set<ScmProtocolProvider> protocolProviders;
+
+  private WorkdirProvider workdirProvider;
 }
diff --git a/scm-core/src/main/java/sonia/scm/repository/spi/RepositoryServiceProvider.java b/scm-core/src/main/java/sonia/scm/repository/spi/RepositoryServiceProvider.java
index bf9cdf6a25..cdd0417cf7 100644
--- a/scm-core/src/main/java/sonia/scm/repository/spi/RepositoryServiceProvider.java
+++ b/scm-core/src/main/java/sonia/scm/repository/spi/RepositoryServiceProvider.java
@@ -275,4 +275,12 @@ public abstract class RepositoryServiceProvider implements Closeable
   {
     throw new CommandNotSupportedException(Command.MERGE);
   }
+
+  /**
+   * @since 2.0
+   */
+  public ModifyCommand getModifyCommand()
+  {
+    throw new CommandNotSupportedException(Command.MODIFY);
+  }
 }
diff --git a/scm-core/src/test/java/sonia/scm/repository/api/RepositoryServiceTest.java b/scm-core/src/test/java/sonia/scm/repository/api/RepositoryServiceTest.java
index 2ceafc19bb..330a4c956a 100644
--- a/scm-core/src/test/java/sonia/scm/repository/api/RepositoryServiceTest.java
+++ b/scm-core/src/test/java/sonia/scm/repository/api/RepositoryServiceTest.java
@@ -24,7 +24,7 @@ public class RepositoryServiceTest {
 
   @Test
   public void shouldReturnMatchingProtocolsFromProvider() {
-    RepositoryService repositoryService = new RepositoryService(null, provider, repository, null, Collections.singleton(new DummyScmProtocolProvider()));
+    RepositoryService repositoryService = new RepositoryService(null, provider, repository, null, Collections.singleton(new DummyScmProtocolProvider()), null);
     Stream<ScmProtocol> supportedProtocols = repositoryService.getSupportedProtocols();
 
     assertThat(sizeOf(supportedProtocols.collect(Collectors.toList()))).isEqualTo(1);
@@ -32,7 +32,7 @@ public class RepositoryServiceTest {
 
   @Test
   public void shouldFindKnownProtocol() {
-    RepositoryService repositoryService = new RepositoryService(null, provider, repository, null, Collections.singleton(new DummyScmProtocolProvider()));
+    RepositoryService repositoryService = new RepositoryService(null, provider, repository, null, Collections.singleton(new DummyScmProtocolProvider()), null);
 
     HttpScmProtocol protocol = repositoryService.getProtocol(HttpScmProtocol.class);
 
@@ -41,7 +41,7 @@ public class RepositoryServiceTest {
 
   @Test
   public void shouldFailForUnknownProtocol() {
-    RepositoryService repositoryService = new RepositoryService(null, provider, repository, null, Collections.singleton(new DummyScmProtocolProvider()));
+    RepositoryService repositoryService = new RepositoryService(null, provider, repository, null, Collections.singleton(new DummyScmProtocolProvider()), null);
 
     assertThrows(IllegalArgumentException.class, () -> {
       repositoryService.getProtocol(UnknownScmProtocol.class);