OnlyWorlds

Where it sits in the directory's order

What can be seen from outside, weighed as the directory publishes.

Where it answers

• https://www.onlyworlds.com/mcpstreamable-http
  • API-Key required, secret: World API key (ow_w_ write key, ow_r_ read key, or legacy 10-digit key)
  • API-Pin optional, secret: World PIN (required for write keys; read keys skip it)

The tools it lists (11, as of 2 days ago)

The tool-description rules found nothing in these descriptions. They look for instructions aimed at a model and for hidden characters; they cannot see what a tool does when it runs.

• 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 if `type` is not one of the 22 types.

• 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)` for a single element.