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Scenario

Online game with AI-driven NPC dialogue and dynamic quests that adapt to each player’s style and choices.

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Extraction

From gameplay events and chat with NPCs, GetProfile tracks:
  • play_style: stealthy, aggressive, completionist, explorer
  • risk_tolerance: likes high-risk high-reward vs safe paths
  • story_preferences[]: political intrigue, romance, horror, humor
  • moral_alignment: tends to spare enemies vs ruthless choices
All learned from in-game decisions and occasional user text.

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Injection

Before generating NPC dialog or a quest:
  • Game server calls the LLM through GetProfile:
    • It injects the player profile:
      • “Player is an explorer completionist who loves political intrigue, hates horror, usually plays ‘good’ moral options.”
  • It injects a few key story memories:
    • important past quests,
    • big choices they made.

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Impact

  • NPCs comment on the right past events.
  • Quest offers and story beats match their style and morals.
  • Same system works across multiple AI features (quests, barks, codex entries) via a shared profile.

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Implementation

import OpenAI from 'openai';

const client = new OpenAI({
apiKey: process.env.GETPROFILE_API_KEY,
baseURL: 'https://api.yourserver.com/v1',
defaultHeaders: {
'X-GetProfile-Id': playerId,
'X-Upstream-Key': process.env.OPENAI_API_KEY,
},
});

// NPC dialogue generation
const response = await client.chat.completions.create({
model: 'gpt-5',
messages: [
{
role: 'system',
content: 'You are an NPC in a fantasy game. Reference the player\'s past choices and match their preferred story style.',
},
{
role: 'user',
content: 'Generate dialogue for the merchant NPC when the player approaches.',
},
],
});
// GetProfile injects player's play style, story preferences, and key past events

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Trait Schema Example

{
  "play_style": {
    "type": "string",
    "enum": ["stealthy", "aggressive", "completionist", "explorer", "speedrunner"],
    "description": "How the player approaches gameplay"
  },
  "risk_tolerance": {
    "type": "string",
    "enum": ["low", "medium", "high"],
    "description": "Player's preference for risky vs safe gameplay"
  },
  "story_preferences": {
    "type": "array",
    "items": {
      "type": "string",
      "enum": ["political-intrigue", "romance", "horror", "humor", "drama", "mystery"]
    },
    "description": "Story themes the player enjoys"
  },
  "moral_alignment": {
    "type": "string",
    "enum": ["good", "neutral", "evil", "chaotic"],
    "description": "Player's typical moral choices"
  },
  "quest_completion_rate": {
    "type": "number",
    "description": "Percentage of quests the player completes"
  }
}

Memories API

Store quest completions and significant player choices

Traits API

Update player traits based on gameplay events