diff --git a/nmdc_notebook_tools/functional_annotation_agg_search.py b/nmdc_notebook_tools/functional_annotation_agg_search.py
new file mode 100644
index 0000000..6bc4cea
--- /dev/null
+++ b/nmdc_notebook_tools/functional_annotation_agg_search.py
@@ -0,0 +1,14 @@
+# -*- coding: utf-8 -*-
+from nmdc_notebook_tools.functional_search import FunctionalSearch
+import logging
+
+logger = logging.getLogger(__name__)
+
+
+class FunctionalAnnotationAggSearch(FunctionalSearch):
+    """
+    Class to interact with the NMDC API to get functional annotation agg sets. These are most helpful when trying identify workflows associted with a KEGG, COG, or PFAM ids.
+    """
+
+    def __init__(self):
+        super().__init__()
diff --git a/nmdc_notebook_tools/functional_search.py b/nmdc_notebook_tools/functional_search.py
new file mode 100644
index 0000000..02e6938
--- /dev/null
+++ b/nmdc_notebook_tools/functional_search.py
@@ -0,0 +1,49 @@
+# -*- coding: utf-8 -*-
+
+from nmdc_notebook_tools.collection_search import CollectionSearch
+
+
+class FunctionalSearch:
+    """
+    Class to interact with the NMDC API to filter functional annotations by KEGG, COG, or PFAM ids.
+    """
+
+    def __init__(self):
+        self.collectioninstance = CollectionSearch("functional_annotation_agg")
+
+    def get_functional_annotation_id(
+        self, id: str, id_type: str, page_size=25, fields="", all_pages=False
+    ):
+        """
+        Get a record from the NMDC API by id. ID types can be KEGG, COG, or PFAM.
+        params:
+            id: str
+                The data base id to query the function annotations.
+            id_type:
+                The type of id to query. MUST be one of the following:
+                    KEGG
+                    COG
+                    PFAM
+            page_size: int
+                The number of results to return per page. Default is 25.
+            fields: str
+                The fields to return. Default is all fields.
+                Example: "id,name"
+            all_pages: bool
+                True to return all pages. False to return the first page. Default is False.
+        """
+        if id_type not in ["KEGG", "COG", "PFAM"]:
+            raise ValueError("id_type must be one of the following: KEGG, COG, PFAM")
+        if id_type == "KEGG":
+            formatted_id_type = f"KEGG.ORTHOLOGY:{id}"
+        elif id_type == "COG":
+            formatted_id_type = f"COG:{id}"
+        elif id_type == "PFAM":
+            formatted_id_type = f"PFAM:{id}"
+
+        filter = f'{{"gene_function_id": "{formatted_id_type}"}}'
+
+        result = self.collectioninstance.get_record_by_filter(
+            filter, page_size, fields, all_pages
+        )
+        return result
diff --git a/nmdc_notebook_tools/lat_long_filters.py b/nmdc_notebook_tools/lat_long_filters.py
index 8fdf4b5..d34bd50 100644
--- a/nmdc_notebook_tools/lat_long_filters.py
+++ b/nmdc_notebook_tools/lat_long_filters.py
@@ -6,6 +6,10 @@
 
 
 class LatLongFilters(CollectionSearch):
+    """
+    Class to interact with the NMDC API to filter sets by latitude and longitude.
+    """
+
     def __init__(self, collection_name):
         self.collection_name = collection_name
         super().__init__(self.collection_name)
diff --git a/nmdc_notebook_tools/test/test_func_ann_agg.py b/nmdc_notebook_tools/test/test_func_ann_agg.py
new file mode 100644
index 0000000..adf7f26
--- /dev/null
+++ b/nmdc_notebook_tools/test/test_func_ann_agg.py
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+from nmdc_notebook_tools.functional_annotation_agg_search import (
+    FunctionalAnnotationAggSearch,
+)
+import logging
+import unittest
+from nmdc_notebook_tools.utils import Utils
+
+
+class TestFunctionalAnnotation(unittest.TestCase):
+    def test_func_ann_id(self):
+        fannagg = FunctionalAnnotationAggSearch()
+        results = fannagg.get_functional_annotation_id("K01426", "KEGG")
+        self.assertGreater(len(results), 0)
+        self.assertEqual(results[0]["gene_function_id"], "KEGG.ORTHOLOGY:K01426")
+
+    def test_func_ann_id_fail(self):
+        fannagg = FunctionalAnnotationAggSearch()
+        with self.assertRaises(ValueError):
+            fannagg.get_functional_annotation_id("K01426", "nfjbg")