NPC Builder brings AI-driven, context-aware NPCs to your games.
Use these guides to set up your account, integrate our SDKs, and call the APIs.
Use these guides to set up your account, integrate our SDKs, and call the APIs.
Active plan required: API and SDK access require an NPC Builder subscription.
View plans & pricing.
View plans & pricing.
Get started
Quickstart
Sign up, generate a token, and receive your first NPC reply in minutes.
Entity Reference
Learn about all the entities existing in NPC Builder and how to use them.
Game-engine integrations
Unity Plugin
Unreal Engine Plugin
API guides
Interactions API
Authenticate, send messages to NPCs, and handle events in responses.
Context API
Programmatically manage Games, Worlds, Regions, Locations, and Characters.
Need full endpoint details? Explore the OpenAPI reference.