AINPCEngine Node.js SDK

Official Node.js SDK for AINPCEngine - AI-powered NPC engine for games.

Create NPCs with real personalities, memories, and dynamic dialogue. Every NPC remembers, gossips, and reacts.

Install

npm install @ainpcengine/nodejs-sdk

Quick Start

const AINPCEngine = require('@ainpcengine/nodejs-sdk');

const client = new AINPCEngine({
  baseUrl: 'https://ainpcengine.com',
  apiKey: 'YOUR_API_KEY',       // Get one at https://ainpcengine.com
  gameId: 'your-game-id',
});

// Talk to an NPC
const result = await client.say(npcId, 'player_1', 'I need a sword', {
  location: 'blacksmith_shop',
  timeOfDay: 'evening',
});

console.log(result.response.dialogue);

NPC CRUD

// Create
const npc = await client.createNPC({
  name: 'Grok the Blacksmith',
  personality: {
    traits: ['gruff', 'honest'],
    speechStyle: 'direct, no-nonsense',
    backstory: 'Former soldier turned smith...',
    values: ['family', 'hard work'],
  },
  role: 'merchant',
  faction: 'ironforge',
});

// List all NPCs for your game
const npcs = await client.listNPCs();

// Get single NPC
const grok = await client.getNPC(npcId);

// Update
await client.updateNPC(npcId, {
  location: 'market_square',
  mood: { emotion: 'happy', intensity: 0.8 },
});

// Delete
await client.deleteNPC(npcId);

Generate NPCs

// Generate single NPC with full persona (OCEAN, schedule, psychology)
const npc = await client.generateNPC({ role: 'merchant' });

// Generate batch with social relationships
const { npcs, socialLinks } = await client.generateBatch({ count: 5 });

Events

// Player dialogue
const result = await client.say(npcId, playerId, message, context);

// Player approaches NPC
const result = await client.approach(npcId, playerId, context);

// Player leaves NPC
const result = await client.leave(npcId, playerId, context);

// Trade request
const result = await client.requestTrade(npcId, playerId, context);

// NPC autonomy tick (hourly world simulation)
const result = await client.ambientTick(npcId, context);

// NPC gossip
const result = await client.gossip(npcId, context);

// Generic event (21 event types supported)
const result = await client.sendEvent(npcId, {
  type: 'combat_started',
  playerId,
  context,
});

Game Context

const context = {
  location: 'blacksmith_shop',
  timeOfDay: 'evening',
  weather: 'rain',
  nearbyNPCs: ['merchant_1'],
  playerReputation: 75,
  playerLevel: 5,
  activeQuests: ['find_sword'],
  recentEvents: ['helped_village'],
};

Also Available

• Unity SDK
• Unreal SDK
• Godot SDK
• Rust SDK

Get an API Key

Sign up at ainpcengine.com to get your API key.

License

MIT - Copyright (c) 2026 Joe Wee / Tyga.Cloud Ltd.