diff --git a/pl/py/libfws/io/fileformats/docling.txt b/pl/py/libfws/io/fileformats/docling.txt
new file mode 100644
index 000000000..aadf5e012
--- /dev/null
+++ b/pl/py/libfws/io/fileformats/docling.txt
@@ -0,0 +1 @@
+https://docling-project.github.io/docling/
diff --git a/science/ai/orchestrators/langchain/search/ddg.txt b/science/ai/orchestrators/langchain/tools/search/ddg.txt
similarity index 87%
rename from science/ai/orchestrators/langchain/search/ddg.txt
rename to science/ai/orchestrators/langchain/tools/search/ddg.txt
index c57c6df6d..e91458f2b 100644
--- a/science/ai/orchestrators/langchain/search/ddg.txt
+++ b/science/ai/orchestrators/langchain/tools/search/ddg.txt
@@ -9,3 +9,6 @@ pip install -U duckduckgo-search langchain-community
 2024
 https://www.restack.io/docs/langchain-knowledge-langchain-duckduckgo-integration
 https://medium.com/@garysvenson09/how-to-use-duckduckgo-search-with-python-in-langchain-157a816fa8d5
+2023
+https://nanonets.com/blog/langchain/
+    from langchain.tools import DuckDuckGoSearchRun
diff --git a/science/ai/orchestrators/langchain/search/wikipedia.txt b/science/ai/orchestrators/langchain/tools/search/wikipedia.txt
similarity index 100%
rename from science/ai/orchestrators/langchain/search/wikipedia.txt
rename to science/ai/orchestrators/langchain/tools/search/wikipedia.txt
diff --git a/science/ai/orchestrators/langchain/tools/tools.txt b/science/ai/orchestrators/langchain/tools/tools.txt
new file mode 100644
index 000000000..25c8f06e5
--- /dev/null
+++ b/science/ai/orchestrators/langchain/tools/tools.txt
@@ -0,0 +1 @@
+https://python.langchain.com/docs/integrations/tools/