diff --git a/crm/api/doc.py b/crm/api/doc.py
new file mode 100644
index 00000000..6ff2788e
--- /dev/null
+++ b/crm/api/doc.py
@@ -0,0 +1,47 @@
+import frappe
+from frappe.model.document import get_controller
+from pypika import Criterion
+
+
+@frappe.whitelist()
+def sort_options(doctype: str):
+	c = get_controller(doctype)
+
+	if not hasattr(c, "sort_options"):
+		return []
+
+	return c.sort_options()
+
+@frappe.whitelist()
+def get_filterable_fields(doctype: str):
+	DocField = frappe.qb.DocType("DocField")
+	allowed_fieldtypes = [
+		"Check",
+		"Data",
+		"Float",
+		"Int",
+		"Link",
+		"Long Text",
+		"Select",
+		"Small Text",
+		"Text Editor",
+		"Text",
+	]
+
+	from_doc_fields = (
+		frappe.qb.from_(DocField)
+		.select(
+			DocField.fieldname,
+			DocField.fieldtype,
+			DocField.label,
+			DocField.name,
+			DocField.options,
+		)
+		.where(DocField.parent == doctype)
+		.where(DocField.hidden == False)
+		.where(Criterion.any([DocField.fieldtype == i for i in allowed_fieldtypes]))
+		.run(as_dict=True)
+	)
+	res = []
+	res.extend(from_doc_fields)
+	return res
diff --git a/crm/extends/doc.py b/crm/extends/doc.py
deleted file mode 100644
index 3d36ff14..00000000
--- a/crm/extends/doc.py
+++ /dev/null
@@ -1,12 +0,0 @@
-import frappe
-from frappe.model.document import get_controller
-
-
-@frappe.whitelist()
-def sort_options(doctype: str):
-	c = get_controller(doctype)
-
-	if not hasattr(c, "sort_options"):
-		return []
-
-	return c.sort_options()
\ No newline at end of file