Nestjs GenAI

Introduction

NestJS module that wraps the official @google/genai SDK so you can share a configured Gemini client via dependency injection.

Installation

using npm

npm install @redredgroup/nestjs-genai

using yarn

yarn install @redredgroup/nestjs-genai

using pnpm

pnpm add @redredgroup/nestjs-genai

Import module

import { Module } from '@nestjs/common';
import { GenAIModule } from '@redredgroup/nestjs-genai';

@Module({
  imports: [
    GenAIModule.forRoot({
      options: {
        apiKey: 'GOOGLE_API_KEY',
      },
    }),
  ],
})
export class AppModule {}

// Or the forRootAsync module using @nestjs/Config

import { Module } from '@nestjs/common';
import { GenAIModule } from '@redredgroup/nestjs-genai';
import { ConfigModule, ConfigService } from '@nestjs/config';

@Module({
  imports: [
    GenAIModule.forRootAsync({
      imports: [ConfigModule],
      inject: [ConfigService],
      useFactory: (configService: ConfigService) => ({
        options: {
          apiKey: configService.get('GOOGLE_API_KEY'),
        },
      }),
    }),
  ],
})
export class AppModule {}

Output 4 nicknames similar to the injected nickname

import { Injectable } from '@nestjs/common';
import { GenAIService } from '@redredgroup/nestjs-genai';
import type { GenerateContentResponse } from '@google/genai';

@Injectable()
export class AppService {
  constructor(private readonly genAiService: GenAIService) {}

  async generateRandomNickname(nickname: string): Promise<GenerateContentResponse> {
    const response = await this.genAiService.models.generateContent({
      model: 'gemini-1.5-flash',
      contents: `You are a helpful assistant that generates nicknames. Provide 4 nicknames similar to "${nickname}".`,
    });

    return response;
  }
}

Copyright

© 2025 REDREDGROUP Software. All Right Reserved.

License

Apache-2.0