--- a
+++ b/aiagents4pharma/talk2knowledgegraphs/utils/enrichments/enrichments.py
@@ -0,0 +1,36 @@
+"""
+Enrichments interface
+"""
+
+from abc import ABC, abstractmethod
+
+class Enrichments(ABC):
+    """Interface for enrichment models.
+
+    This is an interface meant for implementing text enrichment models.
+
+    Enrichment models are used to enrich node or relation features in a given knowledge graph.
+    """
+
+    @abstractmethod
+    def enrich_documents(self, texts: list[str]) -> list[list[str]]:
+        """Enrich documents.
+
+        Args:
+            texts: List of documents to enrich.
+
+        Returns:
+            List of enriched documents.
+        """
+
+    @abstractmethod
+    def enrich_documents_with_rag(self, texts: list[str], docs: list[str]) -> list[str]:
+        """Enrich documents with RAG.
+
+        Args:
+            texts: List of documents to enrich.
+            docs: List of reference documents to enrich the input texts.
+
+        Returns:
+            List of enriched documents with RAG.
+        """