diff --git a/plugins/catalog-graph/report.api.md b/plugins/catalog-graph/report.api.md
index fd1e403473..883c79acf4 100644
--- a/plugins/catalog-graph/report.api.md
+++ b/plugins/catalog-graph/report.api.md
@@ -181,8 +181,31 @@ export type EntityRelationsGraphProps = {
   renderLabel?: DependencyGraphTypes.RenderLabelFunction<EntityEdge>;
   curve?: 'curveStepBefore' | 'curveMonotoneX';
   showArrowHeads?: boolean;
+  onPostTransformation?: GraphTransformationDebugger;
 };
 
+// @public
+export type GraphTransformationDebugger = (
+  transformation: string | undefined,
+  transformationContext: TransformationContext,
+  clonedContext: TransformationContext,
+) => void;
+
 // @public
 export type RelationPairs = [string, string][];
+
+// @public
+export interface TransformationContext {
+  // (undocumented)
+  edges: EntityEdge[];
+  // (undocumented)
+  maxDepth: number;
+  nodeDistances: Map<string, number>;
+  // (undocumented)
+  nodes: EntityNode[];
+  // (undocumented)
+  rootEntityRefs: string[];
+  // (undocumented)
+  unidirectional: boolean;
+}
 ```
diff --git a/plugins/catalog-graph/src/index.ts b/plugins/catalog-graph/src/index.ts
index 68b84c2325..d020e96989 100644
--- a/plugins/catalog-graph/src/index.ts
+++ b/plugins/catalog-graph/src/index.ts
@@ -35,3 +35,7 @@ export type {
   EntityNode,
 } from './lib/types';
 export { Direction } from './lib/types';
+export type {
+  TransformationContext,
+  GraphTransformationDebugger,
+} from './lib/graph-transformations';