diff --git a/backend/src/main/java/org/raddatz/familienarchiv/timeline/TimelineEventView.java b/backend/src/main/java/org/raddatz/familienarchiv/timeline/TimelineEventView.java
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+++ b/backend/src/main/java/org/raddatz/familienarchiv/timeline/TimelineEventView.java
@@ -0,0 +1,59 @@
+package org.raddatz.familienarchiv.timeline;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+
+import org.raddatz.familienarchiv.document.DatePrecision;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.util.List;
+import java.util.UUID;
+
+/**
+ * Response view for the timeline event endpoints — returned by GET, POST, and PUT alike.
+ * Assembled inside the service transaction (after {@code saveAndFlush} on the write paths, so
+ * {@code version} is non-null) from the managed entity's already-loaded collections. The raw
+ * {@link TimelineEvent} is never serialized: its LAZY {@code persons}/{@code documents}
+ * collections under {@code open-in-view: false} would otherwise 500 (ADR-036/ADR-040 §2), and
+ * splatting the entities would leak curator-internal fields ({@code Person.notes},
+ * {@code provisional}, transcription data) to every READ_ALL reader. The explicit field
+ * allow-list below is that guarantee.
+ */
+public record TimelineEventView(
+        @Schema(requiredMode = Schema.RequiredMode.REQUIRED) UUID id,
+        @Schema(requiredMode = Schema.RequiredMode.REQUIRED) String title,
+        @Schema(requiredMode = Schema.RequiredMode.REQUIRED) EventType type,
+        @Schema(requiredMode = Schema.RequiredMode.REQUIRED) LocalDate eventDate,
+        @Schema(requiredMode = Schema.RequiredMode.REQUIRED) DatePrecision precision,
+        LocalDate eventDateEnd,
+        String description,
+        @Schema(requiredMode = Schema.RequiredMode.REQUIRED) Long version,
+        @Schema(requiredMode = Schema.RequiredMode.REQUIRED) UUID createdBy,
+        @Schema(requiredMode = Schema.RequiredMode.REQUIRED) LocalDateTime createdAt,
+        @Schema(requiredMode = Schema.RequiredMode.REQUIRED) UUID updatedBy,
+        @Schema(requiredMode = Schema.RequiredMode.REQUIRED) LocalDateTime updatedAt,
+        @Schema(requiredMode = Schema.RequiredMode.REQUIRED) List<PersonView> persons,
+        @Schema(requiredMode = Schema.RequiredMode.REQUIRED) List<DocumentRef> documents
+) {
+    /** Summarised person — exposes only id, firstName, and lastName. Mirrors GeschichteView.PersonView. */
+    public record PersonView(
+            @Schema(requiredMode = Schema.RequiredMode.REQUIRED) UUID id,
+            String firstName,
+            String lastName
+    ) {}
+
+    /**
+     * Summarised linked document — id, title, and the eager {@code documentDate} only (no lazy
+     * sender/receiver hop, no person-name leak through the document side).
+     *
+     * <p>timeline-local by design; do not promote to {@code document/} — see #775 R7. Reusing
+     * {@code geschichte.journeyitem.DocumentSummary} would force a cross-domain import of a
+     * package-private mapper plus duplicated name-assembly logic; a 3-field local record is the
+     * lower-coupling choice.
+     */
+    public record DocumentRef(
+            @Schema(requiredMode = Schema.RequiredMode.REQUIRED) UUID id,
+            @Schema(requiredMode = Schema.RequiredMode.REQUIRED) String title,
+            LocalDate documentDate
+    ) {}
+}