diff --git a/src/main/java/de/unistuttgart/iste/meitrex/scrumgame/crs/CrsEventTypes.java b/src/main/java/de/unistuttgart/iste/meitrex/scrumgame/crs/CrsEventTypes.java
new file mode 100644
index 0000000..6426bbd
--- /dev/null
+++ b/src/main/java/de/unistuttgart/iste/meitrex/scrumgame/crs/CrsEventTypes.java
@@ -0,0 +1,158 @@
+package de.unistuttgart.iste.meitrex.scrumgame.crs;
+
+import de.unistuttgart.iste.meitrex.generated.dto.*;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Event types for Code Repository Systems.
+ */
+public class CrsEventTypes {
+
+    private static final List<DefaultFieldSchemaDefinition> DEFAULT_FIELDS = List.of(
+            DefaultFieldSchemaDefinition.builder()
+                    .setName("repositoryName")
+                    .setType(AllowedDataType.STRING)
+                    .setDescription("The name of the repository.")
+                    .setRequired(false)
+                    .build(),
+            DefaultFieldSchemaDefinition.builder()
+                    .setName("repositoryUrl")
+                    .setType(AllowedDataType.STRING)
+                    .setDescription("The URL of the repository.")
+                    .setRequired(false)
+                    .build(),
+            DefaultFieldSchemaDefinition.builder()
+                    .setName("vcsUsername")
+                    .setType(AllowedDataType.STRING)
+                    .setDescription("The Vcs username.")
+                    .setRequired(false)
+                    .build(),
+            DefaultFieldSchemaDefinition.builder()
+                    .setName("vcsAvatarUrl")
+                    .setType(AllowedDataType.STRING)
+                    .setDescription("The URL of the Vcs avatar.")
+                    .setRequired(false)
+                    .build(),
+            DefaultFieldSchemaDefinition.builder()
+                    .setName("vcsProfileUrl")
+                    .setType(AllowedDataType.STRING)
+                    .setDescription("The URL of the Vcs profile.")
+                    .setRequired(false)
+                    .build());
+
+    private static List<DefaultFieldSchemaDefinition> defaultFieldsAnd(DefaultFieldSchemaDefinition... additionalFields) {
+        List<DefaultFieldSchemaDefinition> fields = new ArrayList<>(DEFAULT_FIELDS);
+        fields.addAll(List.of(additionalFields));
+        return fields;
+    }
+
+    private static final List<DefaultFieldSchemaDefinition> PULL_REQUEST_FIELDS = defaultFieldsAnd(
+            DefaultFieldSchemaDefinition.builder()
+                    .setName("pullRequestTitle")
+                    .setType(AllowedDataType.STRING)
+                    .setDescription("The title of the pull request.")
+                    .setRequired(false)
+                    .build(),
+            DefaultFieldSchemaDefinition.builder()
+                    .setName("pullRequestUrl")
+                    .setType(AllowedDataType.STRING)
+                    .setDescription("The URL of the pull request.")
+                    .setRequired(false)
+                    .build(),
+            DefaultFieldSchemaDefinition.builder()
+                    .setName("commitCount")
+                    .setType(AllowedDataType.INTEGER)
+                    .setDescription("The number of commits.")
+                    .setRequired(false)
+                    .build(),
+            DefaultFieldSchemaDefinition.builder()
+                    .setName("additions")
+                    .setType(AllowedDataType.INTEGER)
+                    .setDescription("The number of additions.")
+                    .setRequired(false)
+                    .build(),
+            DefaultFieldSchemaDefinition.builder()
+                    .setName("deletions")
+                    .setType(AllowedDataType.INTEGER)
+                    .setDescription("The number of deletions.")
+                    .setRequired(false)
+                    .build()
+    );
+
+    public static final EventType PUSH = DefaultEventType.builder()
+            .setIdentifier("PUSH")
+            .setDescription("A push event.")
+            .setDefaultVisibility(EventVisibility.PUBLIC)
+            .setMessageTemplate("pushed to branch ${branch} with ${commitCount} commits.")
+            .setEventSchema(DefaultSchemaDefinition.builder()
+                    .setFields(
+                            defaultFieldsAnd(
+                                    DefaultFieldSchemaDefinition.builder()
+                                            .setName("branch")
+                                            .setType(AllowedDataType.STRING)
+                                            .setDescription("The name of the branch.")
+                                            .setRequired(false)
+                                            .build(),
+                                    DefaultFieldSchemaDefinition.builder()
+                                            .setName("branchUrl")
+                                            .setType(AllowedDataType.STRING)
+                                            .setDescription("The URL of the branch.")
+                                            .setRequired(false)
+                                            .build(),
+                                    DefaultFieldSchemaDefinition.builder()
+                                            .setName("commitCount")
+                                            .setType(AllowedDataType.INTEGER)
+                                            .setDescription("The number of commits.")
+                                            .setRequired(false)
+                                            .build()))
+                    .build())
+            .build();
+
+    public static final EventType OPEN_PULL_REQUEST = DefaultEventType.builder()
+            .setIdentifier("OPEN_PULL_REQUEST")
+            .setDescription("An open pull request event.")
+            .setMessageTemplate(
+                    "opened the pull request ${pullRequestTitle} with ${commitCount} commits in the repository ${repositoryName}.")
+            .setDefaultVisibility(EventVisibility.PUBLIC)
+            .setEventSchema(DefaultSchemaDefinition.builder()
+                    .setFields(PULL_REQUEST_FIELDS)
+                    .build())
+            .build();
+
+    public static final EventType CLOSE_PULL_REQUEST = DefaultEventType.builder()
+            .setIdentifier("CLOSE_PULL_REQUEST")
+            .setDescription("A close pull request event.")
+            .setMessageTemplate(
+                    "closed the pull request ${pullRequestTitle} with ${commitCount} commits in the repository ${repositoryName}.")
+            .setDefaultVisibility(EventVisibility.PUBLIC)
+            .setEventSchema(DefaultSchemaDefinition.builder()
+                    .setFields(PULL_REQUEST_FIELDS)
+                    .build())
+            .build();
+
+    public static final EventType REVIEW_ACCEPT = DefaultEventType.builder()
+            .setIdentifier("REVIEW_ACCEPT")
+            .setDescription("A review submitted event.")
+            .setDefaultVisibility(EventVisibility.PUBLIC)
+            .setMessageTemplate("accepted the pull request ${pullRequestTitle}.")
+            .setEventSchema(DefaultSchemaDefinition.builder()
+                    .setFields(PULL_REQUEST_FIELDS)
+                    .build())
+            .build();
+
+    public static final EventType REVIEW_CHANGE_REQUEST = DefaultEventType.builder()
+            .setIdentifier("REVIEW_CHANGE_REQUEST")
+            .setDescription("A review change request event.")
+            .setMessageTemplate("requested changes for the pull request ${pullRequestTitle}.")
+            .setDefaultVisibility(EventVisibility.PUBLIC)
+            .setEventSchema(DefaultSchemaDefinition.builder()
+                    .setFields(PULL_REQUEST_FIELDS)
+                    .build())
+            .build();
+
+    public static List<EventType> allEventTypes() {
+        return List.of(PUSH, OPEN_PULL_REQUEST, CLOSE_PULL_REQUEST, REVIEW_ACCEPT, REVIEW_CHANGE_REQUEST);
+    }
+}