diff --git a/src/api/base.controller.ts b/src/api/base.controller.ts
deleted file mode 100644
index 99db2eb..0000000
--- a/src/api/base.controller.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-import { UseFilters, UsePipes, ValidationPipe } from '@nestjs/common';
-import { CommonExceptionFilter } from '../modules/exception/common-exception.filter';
-
-@UsePipes(new ValidationPipe({ whitelist: true }))
-@UseFilters(CommonExceptionFilter)
-export abstract class BaseApiController {}
diff --git a/src/api/create-crud-controller.function.ts b/src/api/create-crud-controller.function.ts
new file mode 100644
index 0000000..9dad982
--- /dev/null
+++ b/src/api/create-crud-controller.function.ts
@@ -0,0 +1,135 @@
+import {
+  ArgumentMetadata,
+  Body,
+  Delete,
+  Get,
+  HttpCode,
+  Injectable,
+  NotFoundException,
+  Param,
+  Post,
+  Query,
+  Type,
+  UsePipes,
+  ValidationPipe,
+  ValidationPipeOptions,
+} from '@nestjs/common';
+import { ApiBody, ApiQuery } from '@nestjs/swagger';
+import { DatabaseEntityService } from '../modules/database/classes/entity-service.class';
+import { DatabaseEntity } from '../modules/database/classes/entity.class';
+import { ApiGetByIdParams } from './get-by-id.api';
+import { ApiSearchQuery } from './search.api';
+
+@Injectable()
+export class AbstractValidationPipe extends ValidationPipe {
+  constructor(
+    options: ValidationPipeOptions,
+    private readonly targetTypes: {
+      body?: Type;
+      query?: Type;
+      param?: Type;
+      custom?: Type;
+    },
+  ) {
+    super(options);
+  }
+
+  async transform(value: any, metadata: ArgumentMetadata) {
+    const targetType = this.targetTypes[metadata.type];
+    if (!targetType) {
+      return super.transform(value, metadata);
+    }
+    return super.transform(value, { ...metadata, metatype: targetType });
+  }
+}
+
+// @todo: support passing generic get by id
+// GetByIdParams: Type = ApiGetByIdParams, // unable to make this generic, @ApiParam({ type: GetByIdParams }) requires a name
+export function CreateCrudApiController(
+  AddDto: Type,
+  UpdateDto: Type,
+  SearchQuery: Type = ApiSearchQuery,
+) {
+  @UsePipes(new ValidationPipe({ whitelist: true }))
+  class CrudApiController {
+    constructor(readonly service: DatabaseEntityService<DatabaseEntity>) {}
+
+    @UsePipes(
+      new AbstractValidationPipe(
+        { whitelist: true, transform: true },
+        { query: SearchQuery },
+      ),
+    )
+    @ApiQuery({ type: SearchQuery })
+    @Get()
+    async list(@Query() query) {
+      return this.service.list({}, query as any);
+    }
+
+    @UsePipes(
+      new AbstractValidationPipe(
+        { whitelist: true, transform: true },
+        { param: ApiGetByIdParams },
+      ),
+    )
+    @Get(':id')
+    async get(@Param() params: ApiGetByIdParams) {
+      const result = await this.service.get(params.id);
+      if (!result) {
+        throw new NotFoundException();
+      }
+      return result;
+    }
+
+    @UsePipes(
+      new AbstractValidationPipe(
+        { whitelist: true, transform: true },
+        { body: AddDto },
+      ),
+    )
+    @ApiBody({ type: AddDto })
+    @HttpCode(201)
+    @Post()
+    async add(@Body() body) {
+      return this.service.add(body as any);
+    }
+
+    @UsePipes(
+      new AbstractValidationPipe(
+        { whitelist: true, transform: true },
+        { body: UpdateDto, param: ApiGetByIdParams },
+      ),
+    )
+    @ApiBody({ type: UpdateDto })
+    @Post(':id')
+    async update(@Body() body, @Param() params: ApiGetByIdParams) {
+      const result = await this.service.get(params.id);
+
+      if (!result) {
+        throw new NotFoundException();
+      }
+
+      return this.service.update(result, body as any);
+    }
+
+    @UsePipes(
+      new AbstractValidationPipe(
+        { whitelist: true, transform: true },
+        { param: ApiGetByIdParams },
+      ),
+    )
+    @HttpCode(204)
+    @Delete(':id')
+    async delete(@Param() params: ApiGetByIdParams) {
+      const result = await this.service.get(params.id);
+
+      if (!result) {
+        throw new NotFoundException();
+      }
+
+      await this.service.delete(result);
+    }
+  }
+
+  return CrudApiController;
+}
diff --git a/src/api/crud.controller.ts b/src/api/crud.controller.ts
index be45273..e32ee9d 100644
--- a/src/api/crud.controller.ts
+++ b/src/api/crud.controller.ts
@@ -7,17 +7,17 @@ import {
   Param,
   NotFoundException,
   HttpCode,
+  UsePipes,
+  ValidationPipe,
 } from '@nestjs/common';
 import { DatabaseEntity } from '../modules/database/classes/entity.class';
 import { DatabaseEntityService } from '../modules/database/classes/entity-service.class';
-import { BaseApiController } from './base.controller';
 
-export abstract class CrudApiController extends BaseApiController {
+@UsePipes(new ValidationPipe({ whitelist: true }))
+export abstract class CrudApiController {
   constructor(
     protected readonly service: DatabaseEntityService<DatabaseEntity>,
-  ) {
-    super();
-  }
+  ) {}
 
   @Get()
   async list(@Query() query) {
diff --git a/src/app/app.providers.ts b/src/app/app.providers.ts
index 04508e3..994b034 100644
--- a/src/app/app.providers.ts
+++ b/src/app/app.providers.ts
@@ -1,9 +1,9 @@
 import { APP_FILTER } from '@nestjs/core';
-import { IndexExceptionFilter } from '../modules/exception/index-exception.filter';
+import { CommonExceptionFilter } from '../modules/exception/common-exception.filter';
 
 export const commonAppProviders = [
   {
     provide: APP_FILTER,
-    useClass: IndexExceptionFilter,
+    useClass: CommonExceptionFilter,
   },
 ];
diff --git a/src/index.ts b/src/index.ts
index 88b53f1..e297f21 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -23,6 +23,7 @@ export * from './modules/database/classes/repository.class';
 export * from './modules/database/classes/soft-delete-repository.class';
 export * from './modules/database/classes/entity-service.class';
 export * from './modules/database/classes/soft-delete-entity-service.class';
+export * from './modules/database/functions/create-provider.function';
 
 export * from './modules/emitter/emitter.service';
 export * from './modules/emitter/emitter.module';
@@ -57,8 +58,8 @@ export * from './modules/ssl/ssl.service';
 export * from './modules/ssl/ssl.module';
 
 // api
-export * from './api/base.controller';
 export * from './api/crud.controller';
+export * from './api/create-crud-controller.function';
 export * from './api/search.api';
 export * from './api/get-by-id.api';
 
diff --git a/src/modules/config/config.service.ts b/src/modules/config/config.service.ts
index be00fae..438db5b 100644
--- a/src/modules/config/config.service.ts
+++ b/src/modules/config/config.service.ts
@@ -28,7 +28,10 @@ export class ConfigService extends NestConfigService {
   }
 
   get debug() {
-    return boolean(this.get<string>('DEBUG')) || true;
+    return (
+      boolean(this.get<string>('DEBUG')) ||
+      (this.node.isEnv('production') ? false : true)
+    );
   }
 
   get frontend() {
diff --git a/src/modules/database/functions/create-provider.function.ts b/src/modules/database/functions/create-provider.function.ts
new file mode 100644
index 0000000..cba5e5e
--- /dev/null
+++ b/src/modules/database/functions/create-provider.function.ts
@@ -0,0 +1,26 @@
+import { Type } from '@nestjs/common';
+import { getModelForClass } from '@typegoose/typegoose';
+import mongoose from 'mongoose';
+import { DB_DEFAULT_CONNECTION } from '../../../constants';
+import { DatabaseEntity } from '../classes/entity.class';
+
+export function CreateDatabaseEntityProvider(
+  token: string,
+  entity: Type<DatabaseEntity>,
+  collection: string,
+) {
+  return {
+    provide: token,
+    useFactory: (connection: mongoose.Connection) => {
+      return getModelForClass(entity, {
+        existingConnection: connection,
+        schemaOptions: {
+          collection: collection,
+          read: 'nearest',
+          versionKey: false,
+        },
+      });
+    },
+    inject: [DB_DEFAULT_CONNECTION],
+  };
+}
diff --git a/src/modules/exception/common-exception.filter.ts b/src/modules/exception/common-exception.filter.ts
index 9f0fd62..17aa732 100644
--- a/src/modules/exception/common-exception.filter.ts
+++ b/src/modules/exception/common-exception.filter.ts
@@ -1,5 +1,4 @@
 import { ConfigService } from '../config/config.service';
-import { LoggerService } from '../logger/logger.service';
 import {
   ArgumentsHost,
   Catch,
@@ -7,28 +6,21 @@ import {
   HttpException,
   Injectable,
 } from '@nestjs/common';
-import { HttpExceptionFilter } from './http-exception.filter';
 import { InternalExceptionFilter } from './internal-exception.filter';
+import { IndexExceptionFilter } from './index-exception.filter';
 
 @Injectable()
 @Catch()
 export class CommonExceptionFilter implements ExceptionFilter {
   constructor(
     public readonly config: ConfigService,
-    private readonly logger: LoggerService,
-    public readonly httpException: HttpExceptionFilter,
+    public readonly indexException: IndexExceptionFilter,
     public readonly internalException: InternalExceptionFilter,
-  ) {
-    this.logger = this.logger.build(CommonExceptionFilter.name);
-  }
+  ) {}
 
   async catch(exception: Error, host: ArgumentsHost) {
     if (exception instanceof HttpException) {
-      return this.httpException.catch(exception, host);
-    }
-
-    if (this.config.node.isEnv('development')) {
-      this.logger.error(exception.stack);
+      return this.indexException.catch(exception, host);
     }
 
     return this.internalException.catch(exception, host);
diff --git a/src/modules/exception/http-exception.filter.ts b/src/modules/exception/http-exception.filter.ts
index 2b4b9ed..0fe23ae 100644
--- a/src/modules/exception/http-exception.filter.ts
+++ b/src/modules/exception/http-exception.filter.ts
@@ -6,23 +6,15 @@ import {
   HttpException,
   Injectable,
 } from '@nestjs/common';
-import { InternalExceptionFilter } from './internal-exception.filter';
 
 @Injectable()
 @Catch(HttpException)
 export class HttpExceptionFilter implements ExceptionFilter {
-  constructor(
-    private readonly logger: LoggerService,
-    private readonly internalException: InternalExceptionFilter,
-  ) {
+  constructor(private readonly logger: LoggerService) {
     this.logger = this.logger.build(HttpExceptionFilter.name);
   }
 
   async catch(exception: HttpException, host: ArgumentsHost) {
-    if (!(exception instanceof HttpException)) {
-      return this.internalException.catch(exception, host);
-    }
-
     const time = new Date().toISOString();
     const ctx = host.switchToHttp();
     const response = ctx.getResponse();
diff --git a/src/modules/exception/index-exception.filter.ts b/src/modules/exception/index-exception.filter.ts
index 7844f6c..07a341f 100644
--- a/src/modules/exception/index-exception.filter.ts
+++ b/src/modules/exception/index-exception.filter.ts
@@ -7,7 +7,6 @@ import {
   Injectable,
 } from '@nestjs/common';
 import { HttpExceptionFilter } from './http-exception.filter';
-import { LoggerService } from '../logger/logger.service';
 import { fileExists } from '../../utils/file-exists.util';
 
 @Injectable()
@@ -16,10 +15,7 @@ export class IndexExceptionFilter implements ExceptionFilter {
   constructor(
     private readonly config: ConfigService,
     private readonly httpException: HttpExceptionFilter,
-    private readonly logger: LoggerService,
-  ) {
-    this.logger = logger.build(IndexExceptionFilter.name);
-  }
+  ) {}
 
   async catch(exception: HttpException, host: ArgumentsHost) {
     const ctx = host.switchToHttp();