diff --git a/doc/openapi/v0/cyphernode-api.yaml b/doc/openapi/v0/cyphernode-api.yaml
index c0b4eff..235591a 100644
--- a/doc/openapi/v0/cyphernode-api.yaml
+++ b/doc/openapi/v0/cyphernode-api.yaml
@@ -942,6 +942,31 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/ApiResponseTemporarilyUnavailable'
+  /getmempoolinfo:
+    get:
+      tags:
+        - "stats"
+        - "core features"
+      summary: "Show mempool info"
+      description: "Returns detailed mempool information."
+      operationId: "getmempoolinfo"
+      responses:
+        '200':
+          description: "successful operation"
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/MempoolInfo'
+        '403':
+          $ref: '#/components/schemas/ApiResponseNotAllowed'
+        '404':
+          $ref: '#/components/schemas/ApiResponseNotFound'
+        '503':
+          description: "Resource temporarily unavailable"
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ApiResponseTemporarilyUnavailable'
   /ln_getinfo:
     get:
       tags: