diff --git a/.changeset/smart-hats-rescue.md b/.changeset/smart-hats-rescue.md
new file mode 100644
index 000000000..cf2cc7c5a
--- /dev/null
+++ b/.changeset/smart-hats-rescue.md
@@ -0,0 +1,5 @@
+---
+"@namehash/namegraph-sdk": minor
+---
+
+Add new endpoint to NameGraph: findCollectionsByCollection
diff --git a/packages/namegraph-sdk/src/index.ts b/packages/namegraph-sdk/src/index.ts
index d88f88186..7d0a0d94d 100644
--- a/packages/namegraph-sdk/src/index.ts
+++ b/packages/namegraph-sdk/src/index.ts
@@ -132,7 +132,7 @@ export interface Collection {
   avatar_image: string;
 }
 
-export interface FindCollectionsByStringResponse {
+export interface FindCollectionsResponse {
   metadata: {
     total_number_of_matched_collections: number;
     processing_time_ms: number;
@@ -163,9 +163,39 @@ export class NameGraph {
     this.abortController = new AbortController();
   }
 
+  public groupedByCategory(
+    label: string,
+  ): Promise<NameGraphGroupedByCategoryResponse> {
+    const sorter = "weighted-sampling";
+    const min_suggestions = 100;
+    const max_suggestions = 100;
+    const min_primary_fraction = 0.1;
+    const mode = "full";
+    const enable_learning_to_rank = true;
+    const name_diversity_ratio = 0.5;
+    const max_per_type = 2;
+
+    const payload = {
+      label,
+      metadata: DEFAULT_METADATA,
+      sorter,
+      min_suggestions,
+      max_suggestions,
+      min_primary_fraction,
+      params: {
+        mode,
+        enable_learning_to_rank,
+        name_diversity_ratio,
+        max_per_type,
+      },
+    };
+
+    return this.rawRequest(`grouped-by-category`, "POST", payload);
+  }
+
   public findCollectionsByString(
     query: string,
-  ): Promise<FindCollectionsByStringResponse> {
+  ): Promise<FindCollectionsResponse> {
     const offset = 0;
     const mode = "instant";
     const limit_names = 10;
@@ -194,34 +224,33 @@ export class NameGraph {
     return this.rawRequest("find_collections_by_string", "POST", payload);
   }
 
-  public groupedByCategory(
-    label: string,
-  ): Promise<NameGraphGroupedByCategoryResponse> {
-    const sorter = "weighted-sampling";
-    const min_suggestions = 100;
-    const max_suggestions = 100;
-    const min_primary_fraction = 0.1;
-    const mode = "full";
-    const enable_learning_to_rank = true;
+  public findCollectionsByCollection(
+    collection_id: string,
+  ): Promise<FindCollectionsResponse> {
+    const limit_names = 10;
+    const offset = 0;
+    const sort_order = "AI";
+    const max_related_collections = 3;
+    const max_per_type = 3;
     const name_diversity_ratio = 0.5;
-    const max_per_type = 2;
+    const min_other_collections = 0;
+    const max_other_collections = 3;
+    const max_total_collections = 6;
 
     const payload = {
-      label,
-      metadata: DEFAULT_METADATA,
-      sorter,
-      min_suggestions,
-      max_suggestions,
-      min_primary_fraction,
-      params: {
-        mode,
-        enable_learning_to_rank,
-        name_diversity_ratio,
-        max_per_type,
-      },
+      limit_names,
+      offset,
+      sort_order,
+      max_related_collections,
+      max_per_type,
+      name_diversity_ratio,
+      min_other_collections,
+      max_other_collections,
+      max_total_collections,
+      collection_id,
     };
 
-    return this.rawRequest(`grouped-by-category`, "POST", payload);
+    return this.rawRequest("find_collections_by_collection", "POST", payload);
   }
 
   public fetchTopCollectionMembers(