How do you define a world?

You ground it in locations.

Characters move through it.

Stories give it meaning.

Map power and conflict.

Character Creature Species Family Collective Institution Location Object Construct Ability Trait Title Language Law Event Narrative Phenomenon Relation Map Pin Marker Zone

For everything, an element.

Every world lives somewhere different: notebooks, wikis, games, websites, brains. There is no standard way to structure them.

OnlyWorlds is a language for worldbuilding: one structure, readable by any application.

public

onlyworlds.com Create and host worlds with API access

edit_note

Base Tool Create, import and export elements

visibility

Little Lens Navigate elements in space and time

how_to_vote

Council Govern the schema with your world's characters

Try one of these, or build your own. The schema is open source with no restrictions. Access any world through the API, and build interfaces to it through developer packages and AI tooling.

Schema

API

SDKs

Docs

OnlyWorlds is local-first: worlds are portable text files. Hosting and API are free, and the schema is governed by its users.

This language can capture any world. Give it a try.

Create a world Explore the language Read the docs Discord GitHub

How do you define a world?

Tools & Ecosystem

Video

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