diff --git a/src/libs/DefaultSchemas.js b/src/libs/DefaultSchemas.ts
similarity index 83%
rename from src/libs/DefaultSchemas.js
rename to src/libs/DefaultSchemas.ts
index 6cb05c9..4ac495b 100644
--- a/src/libs/DefaultSchemas.js
+++ b/src/libs/DefaultSchemas.ts
@@ -1,6 +1,6 @@
-'use strict';
+import type { TFMASchemas, ajvSchema } from "../types/index.js";
 
-const defaultSchemas = modelName => {
+const defaultSchemas = (modelName: string): TFMASchemas => {
     return {
         routeGet: {
             summary: 'Get details of single ' + modelName,
@@ -12,7 +12,8 @@ const defaultSchemas = modelName => {
                         type: 'string',
                         description: 'Unique identifier of ' + modelName
                     }
-                }
+                },
+
             },
             querystring: {
                 type: 'object',
@@ -24,8 +25,8 @@ const defaultSchemas = modelName => {
                 }
             },
             response: {
-                404: { $ref: 'MongooseApiDefErrRespSchemas404#' },
-                500: { $ref: 'MongooseApiDefErrRespSchemas500#' }
+                404: { type: 'object', $ref: 'MongooseApiDefErrRespSchemas404#' },
+                500: { type: 'object', $ref: 'MongooseApiDefErrRespSchemas500#' }
             }
         },
         routePost: {
@@ -41,7 +42,7 @@ const defaultSchemas = modelName => {
                 }
             },
             response: {
-                500: { $ref: 'MongooseApiDefErrRespSchemas500#' }
+                500: { type: 'object', $ref: 'MongooseApiDefErrRespSchemas500#' }
             }
         },
         routeList: {
@@ -90,7 +91,7 @@ const defaultSchemas = modelName => {
                 }
             },
             response: {
-                500: { $ref: 'MongooseApiDefErrRespSchemas500#' }
+                500: { type: 'object', $ref: 'MongooseApiDefErrRespSchemas500#' }
             }
         },
         routePut: {
@@ -115,8 +116,8 @@ const defaultSchemas = modelName => {
                 }
             },
             response: {
-                404: { $ref: 'MongooseApiDefErrRespSchemas404#' },
-                500: { $ref: 'MongooseApiDefErrRespSchemas500#' }
+                404: { type: 'object', $ref: 'MongooseApiDefErrRespSchemas404#' },
+                500: { type: 'object', $ref: 'MongooseApiDefErrRespSchemas500#' }
             }
         },
         routePatch: {
@@ -141,8 +142,8 @@ const defaultSchemas = modelName => {
                 }
             },
             response: {
-                404: { $ref: 'MongooseApiDefErrRespSchemas404#' },
-                500: { $ref: 'MongooseApiDefErrRespSchemas500#' }
+                404: { type: 'object', $ref: 'MongooseApiDefErrRespSchemas404#' },
+                500: { type: 'object', $ref: 'MongooseApiDefErrRespSchemas500#' }
             }
         },
         routeDelete: {
@@ -166,14 +167,14 @@ const defaultSchemas = modelName => {
                         deletedCount: { type: 'number' }
                     }
                 },
-                404: { $ref: 'MongooseApiDefErrRespSchemas404#' },
-                500: { $ref: 'MongooseApiDefErrRespSchemas500#' }
+                404: { type: 'object', $ref: 'MongooseApiDefErrRespSchemas404#' },
+                500: { type: 'object', $ref: 'MongooseApiDefErrRespSchemas500#' }
             }
         }
     };
 };
 
-const responseSchema404 = {
+const responseSchema404:ajvSchema = {
     $id: 'MongooseApiDefErrRespSchemas404',
     description: 'Not found',
     type: 'object',
@@ -184,7 +185,7 @@ const responseSchema404 = {
     }
 };
 
-const responseSchema500 = {
+const responseSchema500: ajvSchema = {
     $id: 'MongooseApiDefErrRespSchemas500',
     description: 'Server error',
     type: 'object',
@@ -195,4 +196,4 @@ const responseSchema500 = {
     }
 };
 
-module.exports = { defaultSchemas, responseSchema404, responseSchema500 };
+export { defaultSchemas, responseSchema404, responseSchema500 };
diff --git a/src/types/index.ts b/src/types/index.ts
new file mode 100644
index 0000000..571b01f
--- /dev/null
+++ b/src/types/index.ts
@@ -0,0 +1,116 @@
+
+export type TFMAFiltersPagination = {
+    offset?: number;
+    skip?: number;
+    limit?: number;
+    page?: number;
+    window?: number;
+};
+
+export type TFMAFiletrsSort = {
+    sort?: string;
+};
+
+export type TFMAFiltersProjection = {
+    projection?: string;
+};
+
+export type TFMAFiltersPopulate = {
+    populate?: string;
+};
+
+export type TFMAFiltersSearch = {
+    where?: string;
+    search?: string;
+    match?: string;
+    filter?: string;
+};
+
+export type TFMAFilters = TFMAFiltersPagination & TFMAFiletrsSort & TFMAFiltersProjection & TFMAFiltersSearch & TFMAFiltersPopulate;
+
+export type TFMASchemaVerbs = 'routeGet' | 'routePost' | 'routePut' | 'routeDelete' | 'routePatch' | 'routeList';
+
+export type TFMASchema = {
+    summary: string;
+    tags: Array<string>;
+    params?: ajvSchema
+    query?: Omit<ajvSchema, 'properties'> & { properties: Partial<Record<keyof TFMAFilters, ajvSchema>>};
+    querystring?: Omit<ajvSchema, 'properties'> & { properties: Partial<Record<keyof TFMAFilters, ajvSchema>>};
+    body?: any;
+    response?: {
+        200?: ajvSchema;
+        204?: ajvSchema;
+        302?: ajvSchema;
+        400?: ajvSchema;
+        401?: ajvSchema;
+        404?: ajvSchema;
+        500?: ajvSchema;
+    };
+};
+
+export type TFMASchemas = Record<TFMASchemaVerbs, TFMASchema>;
+
+export type ajvType =
+    | 'string'
+    | 'number'
+    | 'integer'
+    | 'boolean'
+    | 'object'
+    | 'array'
+    | 'null'
+    | 'timestamp';
+
+export type ajvProperty =  {
+    [key: string]: ajvSchema | ajvProperties;
+}
+
+export type ajvProperties = {
+    properties?: ajvProperty;
+};
+
+export type ajvSchema = ajvProperties & {
+    type: ajvType;
+    items?: ajvSchema[];
+    $ref?: string;
+    description?: string;
+    required?: Array<string>;
+    enum?: Array<string>;
+    default?: any;
+    additionalProperties?: boolean;
+    oneOf?: Array<ajvSchema>;
+    anyOf?: Array<ajvSchema>;
+    allOf?: Array<ajvSchema>;
+    not?: ajvSchema;
+    title?: string;
+    format?: string;
+    minLength?: number;
+    maxLength?: number;
+    minimum?: number;
+    maximum?: number;
+    multipleOf?: number;
+    exclusiveMinimum?: number;
+    exclusiveMaximum?: number;
+    pattern?: string;
+    minItems?: number;
+    maxItems?: number;
+    uniqueItems?: boolean;
+    contains?: ajvSchema;
+    examples?: Array<any>;
+    const?: any;
+    readOnly?: boolean;
+    writeOnly?: boolean;
+    discriminator?: string;
+    xml?: any;
+    externalDocs?: any;
+    deprecated?: boolean;
+    if?: ajvSchema;
+    then?: ajvSchema;
+    else?: ajvSchema;
+    contentEncoding?: string;
+    contentMediaType?: string;
+    contentSchema?: ajvSchema;
+    //[key: string]: any;
+    example?: string | number | boolean | object | Array<any> | null;
+    // not sure $id goes here
+    $id?: string;
+};