www.onlyworlds.com

List Element Types

List all 22 OnlyWorlds element types with a one-line shape summary of each. Every world is built from these types; each element has a stable UUID `id`, a `name`, and a `type`. Use `get_element_schema(type)` for a type's full field list. Unauthenticated — schema is public reference. Returns a mapping of the 22 type slugs (the value you pass as `type` to the data tools) to a summary string.

Get Element Schema

Return the field structure of one OnlyWorlds element `type` (a slug from `list_element_types`, e.g. "character"). The result groups the type's writable fields by kind so a caller knows how to read and write them: `text` (strings), `integer`, `single_link` (one UUID), `multi_link` (an array of UUIDs), and `generic` (a type+id pair pointing at any element type). For every link field the target element type is given under `link_targets`. All link values are element UUIDs. Unauthenticated. Errors i

Search Schema

Search every element type's fields for `query` (case-insensitive substring), across all 22 types. Useful for "which types have a `location` field?" or finding where a concept lives in the schema. Returns a mapping of type slug -> the matching field names in that type (types with no match are omitted); a `query` that also matches a type slug lists that type with an empty field list so the type-name hit is not lost. Unauthenticated.

List Elements

List elements of one `type` in the world named by your API-Key header, newest-created first. `type` is a slug from `list_element_types` (e.g. "character"). Optional `name_contains` filters by case-insensitive name substring; `supertype` filters exactly. `limit` (default 100, max 1000) and `offset` page the result. Requires a READ or WRITE API-Key. Returns `{data: [element, ...], limit, offset, has_more}` where each element is the full v2 wire shape and `id` is a UUID. Use `get_element(type, id)

Get Element

Fetch one element by `type` and `id` (a UUID) from the world named by your API-Key header. `type` is a slug from `list_element_types`. Returns the full v2 wire shape (the same body as `GET /api/v2/{type}/{id}`): `type`, `id`, `name`, scalar fields, link fields as UUID arrays, and any extension fields inline. Requires a READ or WRITE API-Key. Errors if no element of that type with that id exists in the world.

Search Elements

Search elements by name across ALL 22 types in the world named by your API-Key header (case-insensitive substring match). Use this when you know part of a name but not the element's type. Bounded to at most 50 matches per type. Returns `{query, results: [{type, id, name, supertype, subtype}, ...]}` — `id` is a UUID; call `get_element(type, id)` for the full body. Requires a READ or WRITE API-Key.

Get Changes

Return the delta feed for the world named by your API-Key header: every element created/updated (`op: "upsert"`, full body) or deleted (`op: "delete"`) since `since_cursor`, in apply order, in pages of `limit` (default 25, max 1000). Entries carry FULL element bodies — a default page stays inside any client's token budget; measured worlds ran ~1.5-2k chars PER ENTRY, so raise `limit` only if you truly need bigger pages, and prefer paging with the cursor. Omit `since_cursor` (or pass "") to star

Create Element

Create one new element of `type` in the world named by your API-Key header. `type` is a slug from `list_element_types` (e.g. "character"). `element` is the field payload: `name` plus any scalar, link, or extension fields for that type (call `get_element_schema(type)` for the field structure). Link fields are UUID arrays (multi) or a single UUID (single); every linked id must already exist in the world. Supply your own `id` (a UUID) to mint the element at that id, or omit `id` and the server min

Update Element

Update an existing element by `type` and `id`, changing ONLY the fields you pass — omitted fields are preserved. This is a server-side read-merge: the current element is loaded and only the keys in `fields` are applied, so it is safe against the raw-HTTP-PATCH hazard where sending a partial link array replaces the whole array. Semantics per field kind: a text field you pass is set (pass an empty string `""` to clear it); a multi-link field you pass REPLACES that field's array wholesale (pass an

Edit Links

Add and/or remove links on ONE multi-link `field` of an element, leaving the rest of that field's array untouched. Use this for additive/subtractive link edits (unlike `update_element`, which REPLACES a link array). `type` is a slug from `list_element_types`; `id` is the element's UUID; `field` must be a multi-link field on that type (see `get_element_schema(type)`). `add` is a list of UUIDs to link (each must already exist in the world; adding an already-linked id is a no-op) and `remove` is a

Bulk Apply

Create and/or update many elements across any of the 22 types in one call. Each entry in `items` is `{"type": <slug>, "element": <payload>}` with the same payload shape `create_element` takes: an `element` with an `id` UPDATES that id (creating it if absent), an `element` without an `id` CREATES a new element. Items may reference each other by id, including a forward reference to a sibling later in the list. There is NO delete: bulk_apply never removes an element. When `atomic` is false (defaul