diff --git a/generated/attributes/flag.md b/generated/attributes/flag.md
new file mode 100644
index 0000000..7045605
--- /dev/null
+++ b/generated/attributes/flag.md
@@ -0,0 +1,21 @@
+<!-- THIS FILE IS AUTO-GENERATED. DO NOT EDIT DIRECTLY. -->
+
+# Flag Attributes
+
+- [Stable Attributes](#stable-attributes)
+  - [flag.evaluation.\<key\>](#flagevaluationkey)
+
+## Stable Attributes
+
+### flag.evaluation.\<key\>
+
+An instance of a feature flag evaluation. The value of this attribute is the boolean representing the evaluation result. The \<key\> suffix is the name of the feature flag.
+
+| Property | Value |
+| --- | --- |
+| Type | `boolean` |
+| Has PII | false |
+| Exists in OpenTelemetry | No |
+| Has dynamic suffix | Yes |
+| Example | `flag.evaluation.is_new_ui=true` |
+
diff --git a/generated/attributes/index.md b/generated/attributes/index.md
index c98fa44..50827a7 100644
--- a/generated/attributes/index.md
+++ b/generated/attributes/index.md
@@ -16,6 +16,7 @@ This directory contains documentation for all available attributes.
 - [`error` Attributes](./error.md)
 - [`exception` Attributes](./exception.md)
 - [`faas` Attributes](./faas.md)
+- [`flag` Attributes](./flag.md)
 - [`frames` Attributes](./frames.md)
 - [`gen_ai` Attributes](./gen_ai.md)
 - [`general` Attributes](./general.md)
diff --git a/javascript/sentry-conventions/src/attributes.ts b/javascript/sentry-conventions/src/attributes.ts
index d2b0190..f337ce5 100644
--- a/javascript/sentry-conventions/src/attributes.ts
+++ b/javascript/sentry-conventions/src/attributes.ts
@@ -894,6 +894,23 @@ export const FAAS_TIME = 'faas.time';
  */
 export const FAAS_TRIGGER = 'faas.trigger';
 
+// Path: model/attributes/flag/flag__evaluation__<key>.json
+
+/**
+ * An instance of a feature flag evaluation. The value of this attribute is the boolean representing the evaluation result. The <key> suffix is the name of the feature flag.
+ *
+ * Attribute Value Type: boolean
+ *
+ * Contains PII: false
+ *
+ * Attribute defined in OTEL: No
+ *
+ * Has Dynamic Suffix: true
+ *
+ * @example "flag.evaluation.is_new_ui=true"
+ */
+export const FLAG_EVALUATION_KEY = 'flag.evaluation.<key>';
+
 // Path: model/attributes/frames/frames__delay.json
 
 /**
@@ -3631,6 +3648,7 @@ export type Attributes = {
   [FAAS_CRON]?: string;
   [FAAS_TIME]?: string;
   [FAAS_TRIGGER]?: string;
+  [FLAG_EVALUATION_KEY]?: boolean;
   [FRAMES_DELAY]?: number;
   [FRAMES_FROZEN]?: number;
   [FRAMES_SLOW]?: number;
@@ -3820,6 +3838,7 @@ export type FullAttributes = {
   [FAAS_CRON]?: string;
   [FAAS_TIME]?: string;
   [FAAS_TRIGGER]?: string;
+  [FLAG_EVALUATION_KEY]?: boolean;
   [FRAMES_DELAY]?: number;
   [FRAMES_FROZEN]?: number;
   [FRAMES_SLOW]?: number;
diff --git a/model/attributes/flag/flag__evaluation__<key>.json b/model/attributes/flag/flag__evaluation__<key>.json
new file mode 100644
index 0000000..0701282
--- /dev/null
+++ b/model/attributes/flag/flag__evaluation__<key>.json
@@ -0,0 +1,11 @@
+{
+  "key": "flag.evaluation.<key>",
+  "brief": "An instance of a feature flag evaluation. The value of this attribute is the boolean representing the evaluation result. The <key> suffix is the name of the feature flag.",
+  "has_dynamic_suffix": true,
+  "type": "boolean",
+  "pii": {
+    "key": "false"
+  },
+  "is_in_otel": false,
+  "example": "flag.evaluation.is_new_ui=true"
+}
diff --git a/model/attributes/sentry/sentry__sdk__integrations.json b/model/attributes/sentry/sentry__sdk__integrations.json
index 8f106ee..680cb54 100644
--- a/model/attributes/sentry/sentry__sdk__integrations.json
+++ b/model/attributes/sentry/sentry__sdk__integrations.json
@@ -6,10 +6,5 @@
     "key": "false"
   },
   "is_in_otel": false,
-  "example": [
-    "InboundFilters",
-    "FunctionToString",
-    "BrowserApiErrors",
-    "Breadcrumbs"
-  ]
+  "example": ["InboundFilters", "FunctionToString", "BrowserApiErrors", "Breadcrumbs"]
 }
diff --git a/scripts/create_attribute.ts b/scripts/create_attribute.ts
index 882ec49..ceedfeb 100644
--- a/scripts/create_attribute.ts
+++ b/scripts/create_attribute.ts
@@ -1,8 +1,8 @@
+import { execSync } from 'node:child_process';
 import fs from 'node:fs';
 import path from 'node:path';
 import readline from 'node:readline';
 import { parseArgs } from 'node:util';
-import { execSync } from 'node:child_process';
 import Ajv from 'ajv';
 
 const HELP_TEXT = `
@@ -158,7 +158,7 @@ const createAttribute = async () => {
         fs.mkdirSync(dirPath, { recursive: true });
       }
       // Convert rest parts to use double underscores instead of dots
-      const fileName = parts.join('__').replace(/<key>/g, 'key');
+      const fileName = parts.join('__');
       filePath = path.join(dirPath, `${fileName}.json`);
     }