diff --git a/.changeset/refactor-ldap-api-chained-pattern.md b/.changeset/refactor-ldap-api-chained-pattern.md
new file mode 100644
index 0000000000000..e402e8609cb46
--- /dev/null
+++ b/.changeset/refactor-ldap-api-chained-pattern.md
@@ -0,0 +1,5 @@
+---
+'@rocket.chat/meteor': minor
+---
+
+Migrates `ldap.testConnection` and `ldap.testSearch` REST API endpoints from legacy `addRoute` pattern to the new chained `.post()` API pattern with typed response schemas and AJV body validation (replacing Meteor `check()`).
diff --git a/apps/meteor/app/api/server/v1/ldap.ts b/apps/meteor/app/api/server/v1/ldap.ts
index 3f9a2c29deded..efbf9a898d02c 100644
--- a/apps/meteor/app/api/server/v1/ldap.ts
+++ b/apps/meteor/app/api/server/v1/ldap.ts
@@ -1,62 +1,86 @@
 import { LDAP } from '@rocket.chat/core-services';
-import { Match, check } from 'meteor/check';
+import { ajv, isLdapTestSearch, validateUnauthorizedErrorResponse, validateForbiddenErrorResponse } from '@rocket.chat/rest-typings';
 
 import { SystemLogger } from '../../../../server/lib/logger/system';
 import { settings } from '../../../settings/server';
 import { API } from '../api';
 
-API.v1.addRoute(
+const messageResponseSchema = {
+	type: 'object' as const,
+	properties: {
+		message: { type: 'string' as const },
+		success: {
+			type: 'boolean' as const,
+			enum: [true] as const,
+		},
+	},
+	required: ['message', 'success'] as const,
+	additionalProperties: false,
+};
+
+API.v1.post(
 	'ldap.testConnection',
-	{ authRequired: true, permissionsRequired: ['test-admin-options'] },
 	{
-		async post() {
-			if (!this.userId) {
-				throw new Error('error-invalid-user');
-			}
-
-			if (settings.get<boolean>('LDAP_Enable') !== true) {
-				throw new Error('LDAP_disabled');
-			}
-
-			try {
-				await LDAP.testConnection();
-			} catch (err) {
-				SystemLogger.error({ err });
-				throw new Error('Connection_failed');
-			}
-
-			return API.v1.success({
-				message: 'LDAP_Connection_successful' as const,
-			});
+		authRequired: true,
+		permissionsRequired: ['test-admin-options'],
+		response: {
+			200: ajv.compile<{ message: string; success: true }>(messageResponseSchema),
+			401: validateUnauthorizedErrorResponse,
+			403: validateForbiddenErrorResponse,
 		},
 	},
+	async function action() {
+		if (!this.userId) {
+			throw new Error('error-invalid-user');
+		}
+
+		if (settings.get<boolean>('LDAP_Enable') !== true) {
+			throw new Error('LDAP_disabled');
+		}
+
+		try {
+			await LDAP.testConnection();
+		} catch (err) {
+			SystemLogger.error({ err });
+			throw new Error('Connection_failed');
+		}
+
+		return API.v1.success({
+			message: 'LDAP_Connection_successful' as const,
+		});
+	},
 );
 
-API.v1.addRoute(
+API.v1.post(
 	'ldap.testSearch',
-	{ authRequired: true, permissionsRequired: ['test-admin-options'] },
 	{
-		async post() {
-			check(
-				this.bodyParams,
-				Match.ObjectIncluding({
-					username: String,
-				}),
-			);
-
-			if (!this.userId) {
-				throw new Error('error-invalid-user');
-			}
-
-			if (settings.get('LDAP_Enable') !== true) {
-				throw new Error('LDAP_disabled');
-			}
+		authRequired: true,
+		permissionsRequired: ['test-admin-options'],
+		body: isLdapTestSearch,
+		response: {
+			200: ajv.compile<{ message: string; success: true }>(messageResponseSchema),
+			401: validateUnauthorizedErrorResponse,
+			403: validateForbiddenErrorResponse,
+		},
+	},
+	async function action() {
+		if (!this.userId) {
+			throw new Error('error-invalid-user');
+		}
 
+		if (settings.get<boolean>('LDAP_Enable') !== true) {
+			throw new Error('LDAP_disabled');
+		}
+
+		try {
 			await LDAP.testSearch(this.bodyParams.username);
+		} catch (err) {
+			SystemLogger.error({ err });
+			throw new Error('LDAP_search_failed');
+		}
 
-			return API.v1.success({
-				message: 'LDAP_User_Found' as const,
-			});
-		},
+		return API.v1.success({
+			message: 'LDAP_User_Found' as const,
+		});
 	},
 );
diff --git a/packages/rest-typings/src/index.ts b/packages/rest-typings/src/index.ts
index 76a36bffc4b45..3edd726658537 100644
--- a/packages/rest-typings/src/index.ts
+++ b/packages/rest-typings/src/index.ts
@@ -230,6 +230,7 @@ export * from './helpers/ReplacePlaceholders';
 export * from './helpers/WithItemCount';
 export * from './v1/emojiCustom';
 export * from './v1/instances';
+export * from './v1/ldap';
 export * from './v1/users';
 export * from './v1/users/UsersSetAvatarParamsPOST';
 export * from './v1/users/UsersSetPreferenceParamsPOST';