01
Persistent NPC Memory
Carry player history, relationships, and world events across every encounter.
AI NPC Brain SDK
Built for game developers
RYNX Labs
AI NPC Brain SDK
Built for games
Inside the brain
Built for living worlds
Drag to explore
How it works
One SDK. Living characters.
Define the character once. RYNX recalls memory, builds context, applies your rules, and returns a response your game can use.
merchant.ts
Running
01import { Rynx } from "@rynx/brain";02 03const ayla = new Rynx.NPC({04 id: "ayla_merchant",05 personality: ["warm", "observant"],06 memory: { scope: "persistent" },07});08 09const response = await ayla.respond({10 playerId: "player_1042",11 message: "I found your compass.",12});Execution
Loading NPC
ayla_merchant
Recalling memory
12 relevant events
Building context
player_1042 · trust +18
Applying boundaries
merchant_v3 ruleset
Response ready
structured output · 184ms
response.dialogue
“You remembered. Then the northern gate is where we look next.”
Developer experience
Built to ship,
not prototype.
Production-ready tools that fit your workflow—from the first NPC response to millions of live player interactions.
01RYNX SDK
terminal
$npm install @rynx/brain
Install in minutes
Add one package, create an NPC, and start responding without building an AI stack.
02RYNX SDK
type NPCResponse = {
dialogue: string;
intent: NPCIntent;
actions: GameAction[];
}
Typed by default
Predictable schemas make every AI response safe to consume inside real game systems.
03RYNX SDK
Memory recalled12 events
Rules appliedmerchant_v3
Response time184ms
Debug every decision
Inspect recalled memories, applied rules, context, and latency for every response.
TypeScriptUnityUnreal EngineREST APIServer authoritative
RYNX LabsAI NPC Brain SDK
Start building today
Build characters players remember.
Give every NPC memory, personality, and purpose—without giving up control of your game.
Persistent memoryDeveloper controlled