diff --git a/src/crewai_tools/adapters/pdf_embedchain_adapter.py b/src/crewai_tools/adapters/pdf_embedchain_adapter.py
new file mode 100644
index 000000000..12557c971
--- /dev/null
+++ b/src/crewai_tools/adapters/pdf_embedchain_adapter.py
@@ -0,0 +1,32 @@
+from typing import Any, Optional
+
+from embedchain import App
+
+from crewai_tools.tools.rag.rag_tool import Adapter
+
+
+class PDFEmbedchainAdapter(Adapter):
+    embedchain_app: App
+    summarize: bool = False
+    src: Optional[str] = None
+
+    def query(self, question: str) -> str:
+        where = (
+            {"app_id": self.embedchain_app.config.id, "source": self.src}
+            if self.src
+            else None
+        )
+        result, sources = self.embedchain_app.query(
+            question, citations=True, dry_run=(not self.summarize), where=where
+        )
+        if self.summarize:
+            return result
+        return "\n\n".join([source[0] for source in sources])
+
+    def add(
+        self,
+        *args: Any,
+        **kwargs: Any,
+    ) -> None:
+        self.src = args[0] if args else None
+        self.embedchain_app.add(*args, **kwargs)
diff --git a/src/crewai_tools/tools/pdf_search_tool/pdf_search_tool.py b/src/crewai_tools/tools/pdf_search_tool/pdf_search_tool.py
index af95ae0bf..48df8e966 100644
--- a/src/crewai_tools/tools/pdf_search_tool/pdf_search_tool.py
+++ b/src/crewai_tools/tools/pdf_search_tool/pdf_search_tool.py
@@ -1,6 +1,7 @@
 from typing import Any, Optional, Type
 
 from embedchain.models.data_type import DataType
+from pydantic import model_validator
 from pydantic.v1 import BaseModel, Field
 
 from ..rag.rag_tool import RagTool
@@ -35,6 +36,22 @@ class PDFSearchTool(RagTool):
             self.args_schema = FixedPDFSearchToolSchema
             self._generate_description()
 
+    @model_validator(mode="after")
+    def _set_default_adapter(self):
+        if isinstance(self.adapter, RagTool._AdapterPlaceholder):
+            from embedchain import App
+
+            from crewai_tools.adapters.pdf_embedchain_adapter import (
+                PDFEmbedchainAdapter,
+            )
+
+            app = App.from_config(config=self.config) if self.config else App()
+            self.adapter = PDFEmbedchainAdapter(
+                embedchain_app=app, summarize=self.summarize
+            )
+
+        return self
+
     def add(
         self,
         *args: Any,