diff --git a/javascript/sentry-conventions/src/attributes.ts b/javascript/sentry-conventions/src/attributes.ts
index 28e62d02..1e1ff640 100644
--- a/javascript/sentry-conventions/src/attributes.ts
+++ b/javascript/sentry-conventions/src/attributes.ts
@@ -7525,6 +7525,29 @@ export const HTTP_REQUEST_RESPONSE_START = 'http.request.response_start';
  */
 export type HTTP_REQUEST_RESPONSE_START_TYPE = number;
 
+// Path: model/attributes/http/http__request__same_origin.json
+
+/**
+ * Indicates that a URL has the same origin as the current page's origin in the browser. `http.request.same_origin`
+ *
+ * Attribute Value Type: `boolean` {@link HTTP_REQUEST_SAME_ORIGIN_TYPE}
+ *
+ * Apply Scrubbing: manual
+ *
+ * Attribute defined in OTEL: No
+ * Visibility: public
+ *
+ * Aliases: {@link URL_SAME_ORIGIN} `url.same_origin`
+ *
+ * @example true
+ */
+export const HTTP_REQUEST_SAME_ORIGIN = 'http.request.same_origin';
+
+/**
+ * Type for {@link HTTP_REQUEST_SAME_ORIGIN} http.request.same_origin
+ */
+export type HTTP_REQUEST_SAME_ORIGIN_TYPE = boolean;
+
 // Path: model/attributes/http/http__request__secure_connection_start.json
 
 /**
@@ -13624,6 +13647,30 @@ export const URL_QUERY = 'url.query';
  */
 export type URL_QUERY_TYPE = string;
 
+// Path: model/attributes/url/url__same_origin.json
+
+/**
+ * Indicates that a URL has the same origin as the current page's origin in the browser. `url.same_origin`
+ *
+ * Attribute Value Type: `boolean` {@link URL_SAME_ORIGIN_TYPE}
+ *
+ * Apply Scrubbing: manual
+ *
+ * Attribute defined in OTEL: No
+ * Visibility: public
+ *
+ * Aliases: {@link HTTP_REQUEST_SAME_ORIGIN} `http.request.same_origin`
+ *
+ * @deprecated Use {@link HTTP_REQUEST_SAME_ORIGIN} (http.request.same_origin) instead - This attribute is being deprecated in favor of http.request.same_origin.
+ * @example true
+ */
+export const URL_SAME_ORIGIN = 'url.same_origin';
+
+/**
+ * Type for {@link URL_SAME_ORIGIN} url.same_origin
+ */
+export type URL_SAME_ORIGIN_TYPE = boolean;
+
 // Path: model/attributes/url/url__scheme.json
 
 /**
@@ -15100,6 +15147,7 @@ export const ATTRIBUTE_TYPE: Record<string, AttributeType> = {
   'http.request.resend_count': 'integer',
   'http.request.response_end': 'double',
   'http.request.response_start': 'double',
+  'http.request.same_origin': 'boolean',
   'http.request.secure_connection_start': 'double',
   'http.request.time_to_first_byte': 'double',
   'http.request.worker_start': 'double',
@@ -15378,6 +15426,7 @@ export const ATTRIBUTE_TYPE: Record<string, AttributeType> = {
   'url.path.parameter.<key>': 'string',
   'url.port': 'integer',
   'url.query': 'string',
+  'url.same_origin': 'boolean',
   'url.scheme': 'string',
   'url.template': 'string',
   'user_agent.original': 'string',
@@ -15771,6 +15820,7 @@ export type AttributeName =
   | typeof HTTP_REQUEST_RESEND_COUNT
   | typeof HTTP_REQUEST_RESPONSE_END
   | typeof HTTP_REQUEST_RESPONSE_START
+  | typeof HTTP_REQUEST_SAME_ORIGIN
   | typeof HTTP_REQUEST_SECURE_CONNECTION_START
   | typeof HTTP_REQUEST_TIME_TO_FIRST_BYTE
   | typeof HTTP_REQUEST_WORKER_START
@@ -16049,6 +16099,7 @@ export type AttributeName =
   | typeof URL_PATH_PARAMETER_KEY
   | typeof URL_PORT
   | typeof URL_QUERY
+  | typeof URL_SAME_ORIGIN
   | typeof URL_SCHEME
   | typeof URL_TEMPLATE
   | typeof USER_AGENT_ORIGINAL
@@ -20755,6 +20806,18 @@ export const ATTRIBUTE_METADATA: Record<AttributeName, AttributeMetadata> = {
     example: 1732829555.7,
     changelog: [{ version: '0.4.0', prs: [228] }, { version: '0.1.0', prs: [134] }, { version: '0.0.0' }],
   },
+  'http.request.same_origin': {
+    brief: "Indicates that a URL has the same origin as the current page's origin in the browser.",
+    type: 'boolean',
+    applyScrubbing: {
+      key: 'manual',
+    },
+    isInOtel: false,
+    visibility: 'public',
+    example: true,
+    aliases: ['url.same_origin'],
+    changelog: [{ version: 'next', prs: [456], description: 'Added http.request.same_origin attribute' }],
+  },
   'http.request.secure_connection_start': {
     brief:
       'The UNIX timestamp representing the time immediately before the browser starts the handshake process to secure the current connection. If a secure connection is not used, the property returns zero.',
@@ -24370,6 +24433,28 @@ export const ATTRIBUTE_METADATA: Record<AttributeName, AttributeMetadata> = {
     example: 'foo=bar&bar=baz',
     changelog: [{ version: '0.0.0' }],
   },
+  'url.same_origin': {
+    brief: "Indicates that a URL has the same origin as the current page's origin in the browser.",
+    type: 'boolean',
+    applyScrubbing: {
+      key: 'manual',
+    },
+    isInOtel: false,
+    visibility: 'public',
+    example: true,
+    deprecation: {
+      replacement: 'http.request.same_origin',
+      reason: 'This attribute is being deprecated in favor of http.request.same_origin.',
+    },
+    aliases: ['http.request.same_origin'],
+    changelog: [
+      {
+        version: 'next',
+        prs: [456],
+        description: 'Added url.same_origin attribute, deprecated in favor of http.request.same_origin',
+      },
+    ],
+  },
   'url.scheme': {
     brief: 'The URI scheme component identifying the used protocol.',
     type: 'string',
@@ -25289,6 +25374,7 @@ export type Attributes = {
   [HTTP_REQUEST_RESEND_COUNT]?: HTTP_REQUEST_RESEND_COUNT_TYPE;
   [HTTP_REQUEST_RESPONSE_END]?: HTTP_REQUEST_RESPONSE_END_TYPE;
   [HTTP_REQUEST_RESPONSE_START]?: HTTP_REQUEST_RESPONSE_START_TYPE;
+  [HTTP_REQUEST_SAME_ORIGIN]?: HTTP_REQUEST_SAME_ORIGIN_TYPE;
   [HTTP_REQUEST_SECURE_CONNECTION_START]?: HTTP_REQUEST_SECURE_CONNECTION_START_TYPE;
   [HTTP_REQUEST_TIME_TO_FIRST_BYTE]?: HTTP_REQUEST_TIME_TO_FIRST_BYTE_TYPE;
   [HTTP_REQUEST_WORKER_START]?: HTTP_REQUEST_WORKER_START_TYPE;
@@ -25567,6 +25653,7 @@ export type Attributes = {
   [URL_PATH_PARAMETER_KEY]?: URL_PATH_PARAMETER_KEY_TYPE;
   [URL_PORT]?: URL_PORT_TYPE;
   [URL_QUERY]?: URL_QUERY_TYPE;
+  [URL_SAME_ORIGIN]?: URL_SAME_ORIGIN_TYPE;
   [URL_SCHEME]?: URL_SCHEME_TYPE;
   [URL_TEMPLATE]?: URL_TEMPLATE_TYPE;
   [USER_AGENT_ORIGINAL]?: USER_AGENT_ORIGINAL_TYPE;
diff --git a/model/attributes/http/http__request__same_origin.json b/model/attributes/http/http__request__same_origin.json
new file mode 100644
index 00000000..d4568168
--- /dev/null
+++ b/model/attributes/http/http__request__same_origin.json
@@ -0,0 +1,19 @@
+{
+  "key": "http.request.same_origin",
+  "brief": "Indicates that a URL has the same origin as the current page's origin in the browser.",
+  "type": "boolean",
+  "apply_scrubbing": {
+    "key": "manual"
+  },
+  "is_in_otel": false,
+  "example": true,
+  "alias": ["url.same_origin"],
+  "visibility": "public",
+  "changelog": [
+    {
+      "version": "next",
+      "prs": [456],
+      "description": "Added http.request.same_origin attribute"
+    }
+  ]
+}
diff --git a/model/attributes/url/url__same_origin.json b/model/attributes/url/url__same_origin.json
new file mode 100644
index 00000000..74ea7c28
--- /dev/null
+++ b/model/attributes/url/url__same_origin.json
@@ -0,0 +1,24 @@
+{
+  "key": "url.same_origin",
+  "brief": "Indicates that a URL has the same origin as the current page's origin in the browser.",
+  "type": "boolean",
+  "apply_scrubbing": {
+    "key": "manual"
+  },
+  "is_in_otel": false,
+  "example": true,
+  "alias": ["http.request.same_origin"],
+  "deprecation": {
+    "_status": "backfill",
+    "replacement": "http.request.same_origin",
+    "reason": "This attribute is being deprecated in favor of http.request.same_origin."
+  },
+  "visibility": "public",
+  "changelog": [
+    {
+      "version": "next",
+      "prs": [456],
+      "description": "Added url.same_origin attribute, deprecated in favor of http.request.same_origin"
+    }
+  ]
+}
diff --git a/python/src/sentry_conventions/attributes.py b/python/src/sentry_conventions/attributes.py
index c410a509..eb92ccaf 100644
--- a/python/src/sentry_conventions/attributes.py
+++ b/python/src/sentry_conventions/attributes.py
@@ -276,6 +276,7 @@ class _AttributeNamesMeta(type):
         "TRANSACTION",
         "TTFB_REQUESTTIME",
         "TTFB",
+        "URL_SAME_ORIGIN",
         "URL",
     }
 
@@ -4513,6 +4514,20 @@ class ATTRIBUTE_NAMES(metaclass=_AttributeNamesMeta):
     Example: 1732829555.7
     """
 
+    # Path: model/attributes/http/http__request__same_origin.json
+    HTTP_REQUEST_SAME_ORIGIN: Literal["http.request.same_origin"] = (
+        "http.request.same_origin"
+    )
+    """Indicates that a URL has the same origin as the current page's origin in the browser.
+
+    Type: bool
+    Apply Scrubbing: manual
+    Defined in OTEL: No
+    Visibility: public
+    Aliases: url.same_origin
+    Example: true
+    """
+
     # Path: model/attributes/http/http__request__secure_connection_start.json
     HTTP_REQUEST_SECURE_CONNECTION_START: Literal[
         "http.request.secure_connection_start"
@@ -7873,6 +7888,19 @@ class ATTRIBUTE_NAMES(metaclass=_AttributeNamesMeta):
     Example: "foo=bar&bar=baz"
     """
 
+    # Path: model/attributes/url/url__same_origin.json
+    URL_SAME_ORIGIN: Literal["url.same_origin"] = "url.same_origin"
+    """Indicates that a URL has the same origin as the current page's origin in the browser.
+
+    Type: bool
+    Apply Scrubbing: manual
+    Defined in OTEL: No
+    Visibility: public
+    Aliases: http.request.same_origin
+    DEPRECATED: Use http.request.same_origin instead - This attribute is being deprecated in favor of http.request.same_origin.
+    Example: true
+    """
+
     # Path: model/attributes/url/url__scheme.json
     URL_SCHEME: Literal["url.scheme"] = "url.scheme"
     """The URI scheme component identifying the used protocol.
@@ -13505,6 +13533,22 @@ class ATTRIBUTE_NAMES(metaclass=_AttributeNamesMeta):
             ChangelogEntry(version="0.0.0"),
         ],
     ),
+    "http.request.same_origin": AttributeMetadata(
+        brief="Indicates that a URL has the same origin as the current page's origin in the browser.",
+        type=AttributeType.BOOLEAN,
+        apply_scrubbing=ApplyScrubbingInfo(key=ApplyScrubbing.MANUAL),
+        is_in_otel=False,
+        visibility=Visibility.PUBLIC,
+        example=True,
+        aliases=["url.same_origin"],
+        changelog=[
+            ChangelogEntry(
+                version="next",
+                prs=[456],
+                description="Added http.request.same_origin attribute",
+            ),
+        ],
+    ),
     "http.request.secure_connection_start": AttributeMetadata(
         brief="The UNIX timestamp representing the time immediately before the browser starts the handshake process to secure the current connection. If a secure connection is not used, the property returns zero.",
         type=AttributeType.DOUBLE,
@@ -17296,6 +17340,27 @@ class ATTRIBUTE_NAMES(metaclass=_AttributeNamesMeta):
             ChangelogEntry(version="0.0.0"),
         ],
     ),
+    "url.same_origin": AttributeMetadata(
+        brief="Indicates that a URL has the same origin as the current page's origin in the browser.",
+        type=AttributeType.BOOLEAN,
+        apply_scrubbing=ApplyScrubbingInfo(key=ApplyScrubbing.MANUAL),
+        is_in_otel=False,
+        visibility=Visibility.PUBLIC,
+        example=True,
+        deprecation=DeprecationInfo(
+            replacement="http.request.same_origin",
+            reason="This attribute is being deprecated in favor of http.request.same_origin.",
+            status=DeprecationStatus.BACKFILL,
+        ),
+        aliases=["http.request.same_origin"],
+        changelog=[
+            ChangelogEntry(
+                version="next",
+                prs=[456],
+                description="Added url.same_origin attribute, deprecated in favor of http.request.same_origin",
+            ),
+        ],
+    ),
     "url.scheme": AttributeMetadata(
         brief="The URI scheme component identifying the used protocol.",
         type=AttributeType.STRING,
@@ -18229,6 +18294,7 @@ class ATTRIBUTE_NAMES(metaclass=_AttributeNamesMeta):
         "http.request.resend_count": int,
         "http.request.response_end": float,
         "http.request.response_start": float,
+        "http.request.same_origin": bool,
         "http.request.secure_connection_start": float,
         "http.request.time_to_first_byte": float,
         "http.request.worker_start": float,
@@ -18507,6 +18573,7 @@ class ATTRIBUTE_NAMES(metaclass=_AttributeNamesMeta):
         "url.path.parameter.<key>": str,
         "url.port": int,
         "url.query": str,
+        "url.same_origin": bool,
         "url.scheme": str,
         "url.template": str,
         "url": str,