diff --git a/configs/public_api/http_endpoints/config.json b/configs/public_api/http_endpoints/config.json
index c376c2518a9..8c88ee729a1 100644
--- a/configs/public_api/http_endpoints/config.json
+++ b/configs/public_api/http_endpoints/config.json
@@ -1,4 +1,48 @@
 [
+  {
+    "name": "/users/pull_requests/monthly/siz",
+    "description": "Retrieve a monthly summary of a GitHub user's opened and merged pull requests in the specified time range. (If `from` and `to` are not specified, the default period is the past year.)",
+    "method": "GET",
+    "endpoint": "/users/pull_requests/monthly/sizes",
+    "data_source": {
+      "cluster_id": 1379661944642684098
+    },
+    "params": [
+      {
+        "name": "username",
+        "type": "string",
+        "required": 1,
+        "default": "",
+        "description": ""
+      },
+      {
+        "name": "from",
+        "type": "string",
+        "required": 0,
+        "default": "",
+        "description": ""
+      },
+      {
+        "name": "to",
+        "type": "string",
+        "required": 0,
+        "default": "",
+        "description": ""
+      }
+    ],
+    "settings": {
+      "timeout": 30000,
+      "row_limit": 1000,
+      "cache_enabled": 0,
+      "cache_ttl": 0,
+      "enable_pagination": 0
+    },
+    "tag": "Default",
+    "batch_operation": 0,
+    "sql_file": "sql/GET-users-pull_requests-monthly-sizes.sql",
+    "type": "sql_endpoint",
+    "return_type": "json"
+  },
   {
     "name": "/users/pull_requests/monthly/loc",
     "description": "Retrieve a monthly summary of a GitHub user's opened and merged pull requests in the specified time range. (If `from` and `to` are not specified, the default period is the past year.)",
@@ -272,7 +316,7 @@
     "return_type": "json"
   },
   {
-    "name": "/users/pull_requests/language",
+    "name": "/users/pull_requests/languages",
     "description": "Retrieve the count and percentage of a GitHub user's opened pull requests in different programming languages.  (If `from` and `to` are not specified, the default period is the past year.)",
     "method": "GET",
     "endpoint": "/users/pull_requests/used_languages",
@@ -502,7 +546,7 @@
     "name": "/repos/pull_requests/monthly/siz",
     "description": "Get monthly distribution of pull request sizes (XS, S, M, L, XL, XXL) for a specific repository.",
     "method": "GET",
-    "endpoint": "/repos/pull_requests/monthly/size",
+    "endpoint": "/repos/pull_requests/monthly/sizes",
     "data_source": {
       "cluster_id": 1379661944642684098
     },
@@ -545,7 +589,7 @@
     },
     "tag": "Default",
     "batch_operation": 0,
-    "sql_file": "sql/GET-repos-pull_requests-monthly-size.sql",
+    "sql_file": "sql/GET-repos-pull_requests-monthly-sizes.sql",
     "type": "sql_endpoint",
     "return_type": "json"
   },
diff --git a/configs/public_api/http_endpoints/sql/GET-repos-pull_requests-monthly-size.sql b/configs/public_api/http_endpoints/sql/GET-repos-pull_requests-monthly-sizes.sql
similarity index 100%
rename from configs/public_api/http_endpoints/sql/GET-repos-pull_requests-monthly-size.sql
rename to configs/public_api/http_endpoints/sql/GET-repos-pull_requests-monthly-sizes.sql
diff --git a/configs/public_api/http_endpoints/sql/GET-users-pull_requests-monthly-sizes.sql b/configs/public_api/http_endpoints/sql/GET-users-pull_requests-monthly-sizes.sql
new file mode 100644
index 00000000000..0fccc55d4d5
--- /dev/null
+++ b/configs/public_api/http_endpoints/sql/GET-users-pull_requests-monthly-sizes.sql
@@ -0,0 +1,33 @@
+USE gharchive_dev;
+
+SELECT
+  t_month AS event_month, xs, s, m, l, xl, xxl, all_size
+FROM (
+    SELECT
+        t_month,
+        SUM(IF(changes < 10, 1, 0)) OVER(PARTITION BY t_month)                      AS xs,
+        SUM(IF(changes >= 10 AND changes < 30, 1, 0)) OVER(PARTITION BY t_month)    AS s,
+        SUM(IF(changes >= 30 AND changes < 100, 1, 0)) OVER(PARTITION BY t_month)   AS m,
+        SUM(IF(changes >= 100 AND changes < 500, 1, 0)) OVER(PARTITION BY t_month)  AS l,
+        SUM(IF(changes >= 500 AND changes < 1000, 1, 0)) OVER(PARTITION BY t_month) AS xl,
+        SUM(IF(changes >= 1000, 1, 0)) OVER (PARTITION BY t_month)                  AS xxl,
+        COUNT(*) OVER (PARTITION BY t_month)                                        AS all_size,
+        ROW_NUMBER() OVER (PARTITION BY t_month)                                    AS row_num
+    FROM (
+        SELECT
+            DATE_FORMAT(created_at, '%Y-%m-01') AS t_month,
+            additions + deletions AS changes
+        FROM github_events ge
+        WHERE
+            creator_user_id = (SELECT id FROM github_users WHERE login = ${username} LIMIT 1)
+            AND type = 'PullRequestEvent'
+            AND action = 'closed'
+            AND pr_merged = true
+            AND
+                CASE WHEN ${from} = '' THEN (ge.created_at BETWEEN DATE_SUB(NOW(), INTERVAL 1 YEAR) AND NOW())
+                ELSE (ge.created_at >= ${from} AND ge.created_at <= ${to})
+                END
+    ) sub
+) AS sub
+WHERE
+    row_num = 1
\ No newline at end of file