diff --git a/docs/reference/sql/apis/clear-sql-cursor-api.asciidoc b/docs/reference/sql/apis/clear-sql-cursor-api.asciidoc
index 48663ca0d75aa..a16d31c4b12d7 100644
--- a/docs/reference/sql/apis/clear-sql-cursor-api.asciidoc
+++ b/docs/reference/sql/apis/clear-sql-cursor-api.asciidoc
@@ -5,6 +5,12 @@
 <titleabbrev>Clear SQL cursor</titleabbrev>
 ++++
 
+.New API reference
+[sidebar]
+--
+For the most up-to-date API details, refer to {api-es}/group/endpoint-sql[SQL APIs].
+--
+
 Clears an <<sql-pagination,SQL search cursor>>.
 
 ////
diff --git a/docs/reference/sql/apis/delete-async-sql-search-api.asciidoc b/docs/reference/sql/apis/delete-async-sql-search-api.asciidoc
index 1737a39401dba..e8e4ff68cef07 100644
--- a/docs/reference/sql/apis/delete-async-sql-search-api.asciidoc
+++ b/docs/reference/sql/apis/delete-async-sql-search-api.asciidoc
@@ -5,6 +5,12 @@
 <titleabbrev>Delete async SQL search</titleabbrev>
 ++++
 
+.New API reference
+[sidebar]
+--
+For the most up-to-date API details, refer to {api-es}/group/endpoint-sql[SQL APIs].
+--
+
 Deletes an <<sql-async,async SQL search>> or a <<sql-store-searches,stored
 synchronous SQL search>>. If the search is still running, the API cancels it.
 
diff --git a/docs/reference/sql/apis/get-async-sql-search-api.asciidoc b/docs/reference/sql/apis/get-async-sql-search-api.asciidoc
index 8ae575176dd3a..10ca4c648ebaa 100644
--- a/docs/reference/sql/apis/get-async-sql-search-api.asciidoc
+++ b/docs/reference/sql/apis/get-async-sql-search-api.asciidoc
@@ -5,6 +5,12 @@
 <titleabbrev>Get async SQL search</titleabbrev>
 ++++
 
+.New API reference
+[sidebar]
+--
+For the most up-to-date API details, refer to {api-es}/group/endpoint-sql[SQL APIs].
+--
+
 Returns results for an <<sql-async,async SQL search>> or a
 <<sql-store-searches,stored synchronous SQL search>>.
 
diff --git a/docs/reference/sql/apis/get-async-sql-search-status-api.asciidoc b/docs/reference/sql/apis/get-async-sql-search-status-api.asciidoc
index 61505bab7c454..7a0d68cd120cc 100644
--- a/docs/reference/sql/apis/get-async-sql-search-status-api.asciidoc
+++ b/docs/reference/sql/apis/get-async-sql-search-status-api.asciidoc
@@ -5,6 +5,12 @@
 <titleabbrev>Get async SQL search status</titleabbrev>
 ++++
 
+.New API reference
+[sidebar]
+--
+For the most up-to-date API details, refer to {api-es}/group/endpoint-sql[SQL APIs].
+--
+
 Returns the current status of an <<sql-async,async SQL search>> or a
 <<sql-store-searches,stored synchronous SQL search>>.
 
diff --git a/docs/reference/sql/apis/sql-search-api.asciidoc b/docs/reference/sql/apis/sql-search-api.asciidoc
index 118d7975aefd9..b1d002d343fb8 100644
--- a/docs/reference/sql/apis/sql-search-api.asciidoc
+++ b/docs/reference/sql/apis/sql-search-api.asciidoc
@@ -5,6 +5,12 @@
 <titleabbrev>SQL search</titleabbrev>
 ++++
 
+.New API reference
+[sidebar]
+--
+For the most up-to-date API details, refer to {api-es}/group/endpoint-sql[SQL APIs].
+--
+
 Returns results for an <<sql-rest-overview,SQL search>>.
 
 [source,console]
diff --git a/docs/reference/sql/apis/sql-translate-api.asciidoc b/docs/reference/sql/apis/sql-translate-api.asciidoc
index 15e52d118800e..9183423eefd0f 100644
--- a/docs/reference/sql/apis/sql-translate-api.asciidoc
+++ b/docs/reference/sql/apis/sql-translate-api.asciidoc
@@ -5,6 +5,12 @@
 <titleabbrev>SQL translate</titleabbrev>
 ++++
 
+.New API reference
+[sidebar]
+--
+For the most up-to-date API details, refer to {api-es}/group/endpoint-sql[SQL APIs].
+--
+
 Translates an <<sql-search-api,SQL search>> into a <<search-search,search API>>
 request containing <<query-dsl,Query DSL>>. See <<sql-translate>>.
 
diff --git a/docs/reference/synonyms/apis/delete-synonym-rule.asciidoc b/docs/reference/synonyms/apis/delete-synonym-rule.asciidoc
index 74cbab8c0b4a2..11f0708bafcda 100644
--- a/docs/reference/synonyms/apis/delete-synonym-rule.asciidoc
+++ b/docs/reference/synonyms/apis/delete-synonym-rule.asciidoc
@@ -1,10 +1,15 @@
 [[delete-synonym-rule]]
 === Delete synonym rule
-
 ++++
 <titleabbrev>Delete synonym rule</titleabbrev>
 ++++
 
+.New API reference
+[sidebar]
+--
+For the most up-to-date API details, refer to {api-es}/group/endpoint-synonyms[Synonyms APIs].
+--
+
 Deletes an individual synonym rule from a synonyms set.
 
 [[delete-synonym-rule-request]]
diff --git a/docs/reference/synonyms/apis/delete-synonyms-set.asciidoc b/docs/reference/synonyms/apis/delete-synonyms-set.asciidoc
index 9ba33ff3a5c75..62162e5c45675 100644
--- a/docs/reference/synonyms/apis/delete-synonyms-set.asciidoc
+++ b/docs/reference/synonyms/apis/delete-synonyms-set.asciidoc
@@ -1,10 +1,15 @@
 [[delete-synonyms-set]]
 === Delete synonyms set
-
 ++++
 <titleabbrev>Delete synonyms set</titleabbrev>
 ++++
 
+.New API reference
+[sidebar]
+--
+For the most up-to-date API details, refer to {api-es}/group/endpoint-synonyms[Synonyms APIs].
+--
+
 Deletes a synonyms set.
 
 [[delete-synonyms-set-request]]
diff --git a/docs/reference/synonyms/apis/get-synonym-rule.asciidoc b/docs/reference/synonyms/apis/get-synonym-rule.asciidoc
index c6c35e0efecca..3f0ee3f173245 100644
--- a/docs/reference/synonyms/apis/get-synonym-rule.asciidoc
+++ b/docs/reference/synonyms/apis/get-synonym-rule.asciidoc
@@ -1,10 +1,15 @@
 [[get-synonym-rule]]
 === Get synonym rule
-
 ++++
 <titleabbrev>Get synonym rule</titleabbrev>
 ++++
 
+.New API reference
+[sidebar]
+--
+For the most up-to-date API details, refer to {api-es}/group/endpoint-synonyms[Synonyms APIs].
+--
+
 Retrieves a synonym rule from a synonyms set.
 
 [[get-synonym-rule-request]]
diff --git a/docs/reference/synonyms/apis/get-synonyms-set.asciidoc b/docs/reference/synonyms/apis/get-synonyms-set.asciidoc
index 70bb5fb69526d..1bb31081712e5 100644
--- a/docs/reference/synonyms/apis/get-synonyms-set.asciidoc
+++ b/docs/reference/synonyms/apis/get-synonyms-set.asciidoc
@@ -5,6 +5,12 @@
 <titleabbrev>Get synonyms set</titleabbrev>
 ++++
 
+.New API reference
+[sidebar]
+--
+For the most up-to-date API details, refer to {api-es}/group/endpoint-synonyms[Synonyms APIs].
+--
+
 Retrieves a synonyms set.
 
 [[get-synonyms-set-request]]
diff --git a/docs/reference/synonyms/apis/list-synonyms-sets.asciidoc b/docs/reference/synonyms/apis/list-synonyms-sets.asciidoc
index 705a24c809e99..33ef220036b7a 100644
--- a/docs/reference/synonyms/apis/list-synonyms-sets.asciidoc
+++ b/docs/reference/synonyms/apis/list-synonyms-sets.asciidoc
@@ -5,6 +5,12 @@
 <titleabbrev>List synonyms sets</titleabbrev>
 ++++
 
+.New API reference
+[sidebar]
+--
+For the most up-to-date API details, refer to {api-es}/group/endpoint-synonyms[Synonyms APIs].
+--
+
 Retrieves a summary of all defined synonyms sets.
 
 This API allows to retrieve the total number of synonyms sets defined.
diff --git a/docs/reference/synonyms/apis/put-synonym-rule.asciidoc b/docs/reference/synonyms/apis/put-synonym-rule.asciidoc
index de2865632d55e..5bb561f0f923f 100644
--- a/docs/reference/synonyms/apis/put-synonym-rule.asciidoc
+++ b/docs/reference/synonyms/apis/put-synonym-rule.asciidoc
@@ -5,6 +5,12 @@
 <titleabbrev>Create or update synonym rule</titleabbrev>
 ++++
 
+.New API reference
+[sidebar]
+--
+For the most up-to-date API details, refer to {api-es}/group/endpoint-synonyms[Synonyms APIs].
+--
+
 Creates or updates a synonym rule for a synonym set.
 
 [[put-synonym-rule-request]]
diff --git a/docs/reference/synonyms/apis/put-synonyms-set.asciidoc b/docs/reference/synonyms/apis/put-synonyms-set.asciidoc
index ca75885921456..3af85638d022d 100644
--- a/docs/reference/synonyms/apis/put-synonyms-set.asciidoc
+++ b/docs/reference/synonyms/apis/put-synonyms-set.asciidoc
@@ -5,6 +5,12 @@
 <titleabbrev>Create or update synonyms set</titleabbrev>
 ++++
 
+.New API reference
+[sidebar]
+--
+For the most up-to-date API details, refer to {api-es}/group/endpoint-synonyms[Synonyms APIs].
+--
+
 Creates or updates a synonyms set.
 
 NOTE: Synonyms sets are limited to a maximum of 10,000 synonym rules per set.
diff --git a/docs/reference/synonyms/apis/synonyms-apis.asciidoc b/docs/reference/synonyms/apis/synonyms-apis.asciidoc
index dbbc26c36d3df..95fc0aae8c14d 100644
--- a/docs/reference/synonyms/apis/synonyms-apis.asciidoc
+++ b/docs/reference/synonyms/apis/synonyms-apis.asciidoc
@@ -7,6 +7,12 @@
 
 ---
 
+.New API reference
+[sidebar]
+--
+For the most up-to-date API details, refer to {api-es}/group/endpoint-synonyms[Synonyms APIs].
+--
+
 The synonyms management API provides a convenient way to define and manage synonyms in an internal system index. Related synonyms can be grouped in a "synonyms set".
 Create as many synonym sets as you need.
 
diff --git a/docs/reference/text-structure/apis/index.asciidoc b/docs/reference/text-structure/apis/index.asciidoc
index 9f4af120690f7..68607ddf708be 100644
--- a/docs/reference/text-structure/apis/index.asciidoc
+++ b/docs/reference/text-structure/apis/index.asciidoc
@@ -2,6 +2,12 @@
 [[text-structure-apis]]
 == Text structure APIs
 
+.New API reference
+[sidebar]
+--
+For the most up-to-date API details, refer to {api-es}/group/endpoint-text_structure[Text structure APIs].
+--
+
 You can use the following APIs to find text structures:
 
 * <<find-field-structure>>