diff --git a/packages/bruno-filestore/src/formats/yml/common/actions.ts b/packages/bruno-filestore/src/formats/yml/common/actions.ts
index 4a0006604..54b643a2e 100644
--- a/packages/bruno-filestore/src/formats/yml/common/actions.ts
+++ b/packages/bruno-filestore/src/formats/yml/common/actions.ts
@@ -1,6 +1,6 @@
 import type { Action, ActionSetVariable, ActionVariableScope } from '@opencollection/types/common/actions';
 import type { Variable as BrunoVariable, Variables as BrunoVariables } from '@usebruno/schema-types/common/variables';
-import { uuid } from '../../../utils';
+import { uuid, ensureString } from '../../../utils';
 
 /**
  * Convert Bruno post-response variables to OpenCollection actions.
@@ -58,8 +58,8 @@ export const toBrunoPostResponseVariables = (actions: Action[] | null | undefine
 
       const variable: BrunoVariable = {
         uid: uuid(),
-        name: setVarAction.variable?.name || '',
-        value: setVarAction.selector?.expression || '',
+        name: ensureString(setVarAction.variable?.name),
+        value: ensureString(setVarAction.selector?.expression),
         enabled: setVarAction.disabled !== true,
         local: false
       };
diff --git a/packages/bruno-filestore/src/formats/yml/common/assertions.ts b/packages/bruno-filestore/src/formats/yml/common/assertions.ts
index 03c243903..d7b4e4277 100644
--- a/packages/bruno-filestore/src/formats/yml/common/assertions.ts
+++ b/packages/bruno-filestore/src/formats/yml/common/assertions.ts
@@ -1,6 +1,6 @@
 import type { KeyValue as BrunoKeyValue } from '@usebruno/schema-types/common/key-value';
 import type { Assertion } from '@opencollection/types/common/assertions';
-import { uuid } from '../../../utils';
+import { uuid, ensureString } from '../../../utils';
 
 const OPERATORS = [
   'eq',
@@ -119,14 +119,14 @@ export const toBrunoAssertions = (assertions: Assertion[] | null | undefined): B
 
   const brunoAssertions: BrunoKeyValue[] = assertions.map((assertion: Assertion): BrunoKeyValue => {
     // Reconstruct the "operator value" format that Bruno uses
-    let valueString = assertion.operator;
+    let valueString = ensureString(assertion.operator);
     if (assertion.value !== undefined && assertion.value !== null) {
-      valueString = `${assertion.operator} ${assertion.value}`;
+      valueString = `${assertion.operator} ${ensureString(assertion.value)}`;
     }
 
     const brunoAssertion: BrunoKeyValue = {
       uid: uuid(),
-      name: assertion.expression || '',
+      name: ensureString(assertion.expression),
       value: valueString,
       enabled: assertion.disabled !== true
     };
diff --git a/packages/bruno-filestore/src/formats/yml/common/body.ts b/packages/bruno-filestore/src/formats/yml/common/body.ts
index 37fac3dc1..da498b6be 100644
--- a/packages/bruno-filestore/src/formats/yml/common/body.ts
+++ b/packages/bruno-filestore/src/formats/yml/common/body.ts
@@ -10,7 +10,7 @@ import type {
   FileBodyEntry
 } from '@opencollection/types/requests/http';
 import type { KeyValue as BrunoKeyValue } from '@usebruno/schema-types/common/key-value';
-import { uuid } from '../../../utils';
+import { uuid, ensureString } from '../../../utils';
 
 export const toOpenCollectionBody = (body: BrunoHttpRequestBody | null | undefined): HttpRequestBody | undefined => {
   if (!body) {
@@ -179,8 +179,8 @@ export const toBrunoBody = (body: HttpRequestBody | null | undefined): BrunoHttp
       brunoBody.formUrlEncoded = body.data?.map((entry): BrunoKeyValue => {
         const formEntry: BrunoKeyValue = {
           uid: uuid(),
-          name: entry.name || '',
-          value: entry.value || '',
+          name: ensureString(entry.name),
+          value: ensureString(entry.value),
           enabled: entry.disabled !== true
         };
 
@@ -202,8 +202,8 @@ export const toBrunoBody = (body: HttpRequestBody | null | undefined): BrunoHttp
         const multipartEntry: any = {
           uid: uuid(),
           type: entry.type,
-          name: entry.name || '',
-          value: entry.value || (entry.type === 'file' ? [] : ''),
+          name: ensureString(entry.name),
+          value: entry.type === 'file' ? (entry.value || []) : ensureString(entry.value),
           contentType: entry.contentType || null,
           enabled: entry.disabled !== true
         };
diff --git a/packages/bruno-filestore/src/formats/yml/common/headers.ts b/packages/bruno-filestore/src/formats/yml/common/headers.ts
index 55147d53c..0f5e3b354 100644
--- a/packages/bruno-filestore/src/formats/yml/common/headers.ts
+++ b/packages/bruno-filestore/src/formats/yml/common/headers.ts
@@ -1,7 +1,7 @@
 import type { FolderRequest as BrunoFolderRequest } from '@usebruno/schema-types/collection/folder';
 import type { KeyValue as BrunoKeyValue } from '@usebruno/schema-types/common/key-value';
 import type { HttpRequestHeader, HttpResponseHeader } from '@opencollection/types/requests/http';
-import { uuid } from '../../../utils';
+import { uuid, ensureString } from '../../../utils';
 
 export const toOpenCollectionHttpHeaders = (headers: BrunoFolderRequest['headers']): HttpRequestHeader[] | undefined => {
   if (!headers?.length) {
@@ -46,8 +46,8 @@ export const toBrunoHttpHeaders = (headers: HttpRequestHeader[] | HttpResponseHe
   const brunoHeaders = headers.map((header): BrunoKeyValue => {
     const brunoHeader: BrunoKeyValue = {
       uid: uuid(),
-      name: header.name || '',
-      value: header.value || '',
+      name: ensureString(header.name),
+      value: ensureString(header.value),
       enabled: ('disabled' in header) ? header.disabled !== true : true
     };
 
diff --git a/packages/bruno-filestore/src/formats/yml/common/params.ts b/packages/bruno-filestore/src/formats/yml/common/params.ts
index eefd755b0..3fc6bc646 100644
--- a/packages/bruno-filestore/src/formats/yml/common/params.ts
+++ b/packages/bruno-filestore/src/formats/yml/common/params.ts
@@ -1,6 +1,6 @@
 import type { HttpRequestParam as BrunoHttpRequestParam } from '@usebruno/schema-types/requests/http';
 import type { HttpRequestParam } from '@opencollection/types/requests/http';
-import { uuid } from '../../../utils';
+import { uuid, ensureString } from '../../../utils';
 
 export const toOpenCollectionParams = (params: BrunoHttpRequestParam[] | null | undefined): HttpRequestParam[] | undefined => {
   if (!params?.length) {
@@ -36,8 +36,8 @@ export const toBrunoParams = (params: HttpRequestParam[] | null | undefined): Br
   const brunoParams = params.map((param: HttpRequestParam): BrunoHttpRequestParam => {
     const brunoParam: BrunoHttpRequestParam = {
       uid: uuid(),
-      name: param.name || '',
-      value: param.value || '',
+      name: ensureString(param.name),
+      value: ensureString(param.value),
       type: param.type,
       enabled: param.disabled !== true
     };
diff --git a/packages/bruno-filestore/src/formats/yml/common/variables.ts b/packages/bruno-filestore/src/formats/yml/common/variables.ts
index 6972d4b12..6295a3ac3 100644
--- a/packages/bruno-filestore/src/formats/yml/common/variables.ts
+++ b/packages/bruno-filestore/src/formats/yml/common/variables.ts
@@ -1,7 +1,7 @@
 import { Variable } from '@opencollection/types/common/variables';
 import { FolderRequest as BrunoFolderRequest } from '@usebruno/schema-types/collection/folder';
 import { Variable as BrunoVariable, Variables as BrunoVariables } from '@usebruno/schema-types/common/variables';
-import { uuid } from '../../../utils';
+import { uuid, ensureString } from '../../../utils';
 
 /**
  * Convert Bruno pre-request variables to OpenCollection variables format.
@@ -51,8 +51,8 @@ export const toBrunoVariables = (variables: Variable[] | null | undefined): { re
   variables.forEach((v: Variable) => {
     const variable: BrunoVariable = {
       uid: uuid(),
-      name: v.name || '',
-      value: v.value as string || '',
+      name: ensureString(v.name),
+      value: ensureString(v.value),
       enabled: v.disabled !== true,
       local: false
     };
diff --git a/packages/bruno-filestore/src/formats/yml/items/parseGraphQLRequest.ts b/packages/bruno-filestore/src/formats/yml/items/parseGraphQLRequest.ts
index 594a10acb..dc698bc20 100644
--- a/packages/bruno-filestore/src/formats/yml/items/parseGraphQLRequest.ts
+++ b/packages/bruno-filestore/src/formats/yml/items/parseGraphQLRequest.ts
@@ -8,7 +8,7 @@ import { toBrunoVariables } from '../common/variables';
 import { toBrunoPostResponseVariables } from '../common/actions';
 import { toBrunoScripts } from '../common/scripts';
 import { toBrunoAssertions } from '../common/assertions';
-import { uuid } from '../../../utils';
+import { uuid, ensureString } from '../../../utils';
 
 const parseGraphQLRequest = (ocRequest: GraphQLRequest): BrunoItem => {
   const info = ocRequest.info;
@@ -16,8 +16,8 @@ const parseGraphQLRequest = (ocRequest: GraphQLRequest): BrunoItem => {
   const runtime = ocRequest.runtime;
 
   const brunoRequest: BrunoHttpRequest = {
-    url: graphql?.url || '',
-    method: graphql?.method || 'POST',
+    url: ensureString(graphql?.url),
+    method: ensureString(graphql?.method, 'POST'),
     headers: toBrunoHttpHeaders(graphql?.headers) || [],
     params: toBrunoParams(graphql?.params) || [],
     auth: toBrunoAuth(graphql?.auth),
@@ -86,7 +86,7 @@ const parseGraphQLRequest = (ocRequest: GraphQLRequest): BrunoItem => {
     uid: uuid(),
     type: 'graphql-request',
     seq: info?.seq || 1,
-    name: info?.name || 'Untitled Request',
+    name: ensureString(info?.name, 'Untitled Request'),
     tags: info?.tags || [],
     request: brunoRequest,
     settings: null,
diff --git a/packages/bruno-filestore/src/formats/yml/items/parseGrpcRequest.ts b/packages/bruno-filestore/src/formats/yml/items/parseGrpcRequest.ts
index d684617e2..f38a6ffe4 100644
--- a/packages/bruno-filestore/src/formats/yml/items/parseGrpcRequest.ts
+++ b/packages/bruno-filestore/src/formats/yml/items/parseGrpcRequest.ts
@@ -6,7 +6,7 @@ import { toBrunoAuth } from '../common/auth';
 import { toBrunoVariables } from '../common/variables';
 import { toBrunoScripts } from '../common/scripts';
 import { toBrunoAssertions } from '../common/assertions';
-import { isNonEmptyString, uuid } from '../../../utils';
+import { isNonEmptyString, uuid, ensureString } from '../../../utils';
 
 const toBrunoGrpcMetadata = (metadata: GrpcMetadata[] | null | undefined): BrunoKeyValue[] | undefined => {
   if (!metadata?.length) {
@@ -16,8 +16,8 @@ const toBrunoGrpcMetadata = (metadata: GrpcMetadata[] | null | undefined): Bruno
   const brunoMetadata = metadata.map((meta: GrpcMetadata): BrunoKeyValue => {
     const brunoMeta: BrunoKeyValue = {
       uid: uuid(),
-      name: meta.name || '',
-      value: meta.value || '',
+      name: ensureString(meta.name),
+      value: ensureString(meta.value),
       enabled: meta.disabled !== true
     };
 
@@ -33,8 +33,8 @@ const parseGrpcRequest = (ocRequest: GrpcRequest): BrunoItem => {
   const runtime = ocRequest.runtime;
 
   const brunoRequest: BrunoGrpcRequest = {
-    url: grpc?.url || '',
-    method: grpc?.method || '',
+    url: ensureString(grpc?.url),
+    method: ensureString(grpc?.method),
     methodType: grpc?.methodType || '',
     protoPath: grpc?.protoFilePath || null,
     headers: toBrunoGrpcMetadata(grpc?.metadata) || [],
@@ -98,7 +98,7 @@ const parseGrpcRequest = (ocRequest: GrpcRequest): BrunoItem => {
     uid: uuid(),
     type: 'grpc-request',
     seq: info?.seq || 1,
-    name: info?.name || 'Untitled Request',
+    name: ensureString(info?.name, 'Untitled Request'),
     tags: info?.tags || [],
     request: brunoRequest,
     settings: {},
diff --git a/packages/bruno-filestore/src/formats/yml/items/parseHttpRequest.ts b/packages/bruno-filestore/src/formats/yml/items/parseHttpRequest.ts
index 57891d783..dc7a4ddbd 100644
--- a/packages/bruno-filestore/src/formats/yml/items/parseHttpRequest.ts
+++ b/packages/bruno-filestore/src/formats/yml/items/parseHttpRequest.ts
@@ -9,7 +9,7 @@ import { toBrunoVariables } from '../common/variables';
 import { toBrunoPostResponseVariables } from '../common/actions';
 import { toBrunoScripts } from '../common/scripts';
 import { toBrunoAssertions } from '../common/assertions';
-import { uuid } from '../../../utils';
+import { uuid, ensureString } from '../../../utils';
 
 const parseHttpRequest = (ocRequest: HttpRequest): BrunoItem => {
   const info = ocRequest.info;
@@ -17,8 +17,8 @@ const parseHttpRequest = (ocRequest: HttpRequest): BrunoItem => {
   const runtime = ocRequest.runtime;
 
   const brunoRequest: BrunoHttpRequest = {
-    url: http?.url || '',
-    method: http?.method || 'GET',
+    url: ensureString(http?.url),
+    method: ensureString(http?.method, 'GET'),
     headers: toBrunoHttpHeaders(http?.headers) || [],
     params: toBrunoParams(http?.params) || [],
     auth: toBrunoAuth(http?.auth),
@@ -84,7 +84,7 @@ const parseHttpRequest = (ocRequest: HttpRequest): BrunoItem => {
     uid: uuid(),
     type: 'http-request',
     seq: info?.seq || 1,
-    name: info?.name || 'Untitled Request',
+    name: ensureString(info?.name, 'Untitled Request'),
     tags: info?.tags || [],
     request: brunoRequest,
     settings: null,
@@ -135,7 +135,7 @@ const parseHttpRequest = (ocRequest: HttpRequest): BrunoItem => {
       const brunoExample: any = {
         uid: uuid(),
         itemUid: uuid(),
-        name: example.name || 'Untitled Example',
+        name: ensureString(example.name, 'Untitled Example'),
         type: 'http-request',
         request: null,
         response: null
@@ -151,8 +151,8 @@ const parseHttpRequest = (ocRequest: HttpRequest): BrunoItem => {
 
       if (example.request) {
         brunoExample.request = {
-          url: example.request.url || '',
-          method: example.request.method || 'GET',
+          url: ensureString(example.request.url),
+          method: ensureString(example.request.method, 'GET'),
           headers: toBrunoHttpHeaders(example.request.headers) || [],
           params: toBrunoParams(example.request.params) || [],
           body: toBrunoBody(example.request.body) || {
diff --git a/packages/bruno-filestore/src/formats/yml/items/parseWebsocketRequest.ts b/packages/bruno-filestore/src/formats/yml/items/parseWebsocketRequest.ts
index 1aa8e7c8e..14799ef56 100644
--- a/packages/bruno-filestore/src/formats/yml/items/parseWebsocketRequest.ts
+++ b/packages/bruno-filestore/src/formats/yml/items/parseWebsocketRequest.ts
@@ -5,7 +5,7 @@ import { toBrunoAuth } from '../common/auth';
 import { toBrunoHttpHeaders } from '../common/headers';
 import { toBrunoVariables } from '../common/variables';
 import { toBrunoScripts } from '../common/scripts';
-import { uuid } from '../../../utils';
+import { uuid, ensureString } from '../../../utils';
 
 const parseWebsocketRequest = (ocRequest: WebSocketRequest): BrunoItem => {
   const info = ocRequest.info;
@@ -13,7 +13,7 @@ const parseWebsocketRequest = (ocRequest: WebSocketRequest): BrunoItem => {
   const runtime = ocRequest.runtime;
 
   const brunoRequest: BrunoWebSocketRequest = {
-    url: websocket?.url || '',
+    url: ensureString(websocket?.url),
     headers: toBrunoHttpHeaders(websocket?.headers) || [],
     auth: toBrunoAuth(websocket?.auth),
     body: {
@@ -36,11 +36,12 @@ const parseWebsocketRequest = (ocRequest: WebSocketRequest): BrunoItem => {
   // message
   if (websocket?.message) {
     const message = websocket.message as WebSocketMessage;
-    if (message.data?.trim().length) {
+    const messageData = ensureString(message.data);
+    if (messageData.trim().length) {
       brunoRequest.body.ws = [{
         name: '',
         type: message.type || 'text',
-        content: message.data
+        content: messageData
       }];
     }
   }
@@ -88,7 +89,7 @@ const parseWebsocketRequest = (ocRequest: WebSocketRequest): BrunoItem => {
     uid: uuid(),
     type: 'ws-request',
     seq: info?.seq || 1,
-    name: info?.name || 'Untitled Request',
+    name: ensureString(info?.name, 'Untitled Request'),
     tags: info?.tags || [],
     request: brunoRequest,
     settings: wsSettings as any,
diff --git a/packages/bruno-filestore/src/formats/yml/parseCollection.ts b/packages/bruno-filestore/src/formats/yml/parseCollection.ts
index c192d1750..8fe96a7c4 100644
--- a/packages/bruno-filestore/src/formats/yml/parseCollection.ts
+++ b/packages/bruno-filestore/src/formats/yml/parseCollection.ts
@@ -5,6 +5,7 @@ import { toBrunoAuth } from './common/auth';
 import { toBrunoHttpHeaders } from './common/headers';
 import { toBrunoVariables } from './common/variables';
 import { toBrunoScripts } from './common/scripts';
+import { ensureString } from '../../utils';
 
 interface ParsedCollection {
   collectionRoot: FolderRoot;
@@ -18,7 +19,7 @@ const parseCollection = (ymlString: string): ParsedCollection => {
     // bruno config
     const brunoConfig: Record<string, any> = {
       opencollection: oc.opencollection || '1.0.0',
-      name: oc.info?.name || 'Untitled Collection',
+      name: ensureString(oc.info?.name, 'Untitled Collection'),
       type: 'collection',
       ignore: []
     };
diff --git a/packages/bruno-filestore/src/formats/yml/parseEnvironment.ts b/packages/bruno-filestore/src/formats/yml/parseEnvironment.ts
index 564a2e6c4..5eaba6baf 100644
--- a/packages/bruno-filestore/src/formats/yml/parseEnvironment.ts
+++ b/packages/bruno-filestore/src/formats/yml/parseEnvironment.ts
@@ -2,7 +2,7 @@ import type { Environment as BrunoEnvironment, EnvironmentVariable as BrunoEnvir
 import type { Environment } from '@opencollection/types/config/environments';
 import type { Variable, SecretVariable } from '@opencollection/types/common/variables';
 import { parseYml } from './utils';
-import { uuid } from '../../utils';
+import { uuid, ensureString } from '../../utils';
 
 const isSecretVariable = (v: Variable | SecretVariable): v is SecretVariable => {
   return 'secret' in v && v.secret === true;
@@ -17,7 +17,7 @@ const toBrunoEnvironmentVariables = (variables: (Variable | SecretVariable)[] |
     if (isSecretVariable(v)) {
       return {
         uid: uuid(),
-        name: v.name || '',
+        name: ensureString(v.name),
         value: '',
         type: 'text',
         enabled: v.disabled !== true,
@@ -26,8 +26,8 @@ const toBrunoEnvironmentVariables = (variables: (Variable | SecretVariable)[] |
     }
     const variable: BrunoEnvironmentVariable = {
       uid: uuid(),
-      name: v.name || '',
-      value: (typeof v.value === 'string' ? v.value : '') || '',
+      name: ensureString(v.name),
+      value: ensureString(v.value),
       type: 'text',
       enabled: v.disabled !== true,
       secret: false
@@ -42,7 +42,7 @@ const parseEnvironment = (ymlString: string): BrunoEnvironment => {
 
     const brunoEnvironment: BrunoEnvironment = {
       uid: uuid(),
-      name: ocEnvironment.name || 'Untitled Environment',
+      name: ensureString(ocEnvironment.name, 'Untitled Environment'),
       variables: toBrunoEnvironmentVariables(ocEnvironment.variables)
     };
 
diff --git a/packages/bruno-filestore/src/formats/yml/parseFolder.ts b/packages/bruno-filestore/src/formats/yml/parseFolder.ts
index 98227f851..4c8323706 100644
--- a/packages/bruno-filestore/src/formats/yml/parseFolder.ts
+++ b/packages/bruno-filestore/src/formats/yml/parseFolder.ts
@@ -5,7 +5,7 @@ import { toBrunoAuth } from './common/auth';
 import { toBrunoHttpHeaders } from './common/headers';
 import { toBrunoVariables } from './common/variables';
 import { toBrunoScripts } from './common/scripts';
-import { isNonEmptyString } from '../../utils';
+import { ensureString } from '../../utils';
 
 const parseFolder = (ymlString: string): FolderRoot => {
   try {
@@ -15,7 +15,7 @@ const parseFolder = (ymlString: string): FolderRoot => {
 
     const folderRoot: FolderRoot = {
       meta: {
-        name: info?.name || 'Untitled Folder',
+        name: ensureString(info?.name, 'Untitled Folder'),
         seq: info?.seq || 1
       },
       request: null,
diff --git a/packages/bruno-filestore/src/utils/index.ts b/packages/bruno-filestore/src/utils/index.ts
index 590bd3140..ac41bc8db 100644
--- a/packages/bruno-filestore/src/utils/index.ts
+++ b/packages/bruno-filestore/src/utils/index.ts
@@ -6,6 +6,16 @@ export const isNumber = (value: unknown): value is number => typeof value === 'n
 
 export const isNonEmptyString = (value: unknown): value is string => isString(value) && value.trim().length > 0;
 
+export const ensureString = (value: unknown, fallback: string = ''): string => {
+  if (value === null || value === undefined) {
+    return fallback;
+  }
+  if (typeof value === 'string') {
+    return value;
+  }
+  return String(value);
+};
+
 export const uuid = () => {
   // https://github.com/ai/nanoid/blob/main/url-alphabet/index.js
   const urlAlphabet = 'useandom26T198340PX75pxJACKVERYMINDBUSHWOLFGQZbfghjklqvwyzrict';