diff --git a/frontend/src/pages/settings/settings-api-tokens.test.tsx b/frontend/src/pages/settings/settings-api-tokens.test.tsx
new file mode 100644
index 00000000..52cd9ded
--- /dev/null
+++ b/frontend/src/pages/settings/settings-api-tokens.test.tsx
@@ -0,0 +1,24 @@
+import { describe, expect, it } from 'vitest';
+
+import { tokenNameSchema } from './settings-api-tokens';
+
+describe('tokenNameSchema', () => {
+    it('accepts a name at the 100-character boundary', () => {
+        expect(tokenNameSchema.safeParse('a'.repeat(100)).success).toBe(true);
+    });
+
+    it('rejects a name one character over the 100-character cap', () => {
+        expect(tokenNameSchema.safeParse('a'.repeat(101)).success).toBe(false);
+    });
+
+    it('trims surrounding whitespace before length-checking', () => {
+        expect(tokenNameSchema.safeParse(`  ${'a'.repeat(100)}  `)).toMatchObject({
+            data: 'a'.repeat(100),
+            success: true,
+        });
+    });
+
+    it('defaults an omitted name to an empty string', () => {
+        expect(tokenNameSchema.safeParse(undefined)).toMatchObject({ data: '', success: true });
+    });
+});
diff --git a/frontend/src/pages/settings/settings-api-tokens.tsx b/frontend/src/pages/settings/settings-api-tokens.tsx
index e9b0055f..b3e97242 100644
--- a/frontend/src/pages/settings/settings-api-tokens.tsx
+++ b/frontend/src/pages/settings/settings-api-tokens.tsx
@@ -63,7 +63,7 @@ import { baseUrl } from '@/models/api';
 type APIToken = ApiTokenFragmentFragment;
 
 // 100 mirrors the backend cap (server/models/api_tokens.go + the createAPIToken/updateAPIToken resolvers).
-const tokenNameSchema = z.string().trim().max(100, 'Token name must be 100 characters or less').default('');
+export const tokenNameSchema = z.string().trim().max(100, 'Token name must be 100 characters or less').default('');
 
 const createTokenFormSchema = z.object({
     // Nullable in form input (the date picker starts empty); the refine gates