> ## Documentation Index
> Fetch the complete documentation index at: https://docs.blockscout.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Number of known MUD worlds.

> Retrieves the total number of known MUD worlds.



## OpenAPI

````yaml /openapi-specs/pro-api-v11.yaml get /v2/mud/worlds/count
openapi: 3.0.0
info:
  contact:
    email: info@blockscout.com
  title: Blockscout
  version: 11.0.3
servers:
  - url: http://localhost/api
    variables: {}
security: []
tags:
  - name: blocks
  - name: transactions
  - name: addresses
  - name: internal-transactions
  - name: tokens
  - name: token-transfers
  - name: smart-contracts
  - name: config
  - name: main-page
  - name: search
  - name: stats
  - name: csv-export
  - name: account-abstraction
  - name: withdrawals
  - name: advanced-filters
  - name: arbitrum
  - name: legacy
  - name: optimism
  - name: mud
  - name: celo
  - name: scroll
  - name: zilliqa
paths:
  /v2/mud/worlds/count:
    get:
      tags:
        - mud
      summary: Number of known MUD worlds.
      description: Retrieves the total number of known MUD worlds.
      operationId: BlockScoutWeb.API.V2.MudController.worlds_count
      parameters:
        - description: API key for rate limiting or for sensitive endpoints
          in: query
          name: apikey
          required: false
          schema:
            type: string
            x-struct: null
            x-validate: null
        - description: Secret key for getting access to restricted resources
          in: query
          name: key
          required: false
          schema:
            type: string
            x-struct: null
            x-validate: null
      responses:
        '200':
          content:
            application/json:
              schema:
                type: integer
                x-struct: null
                x-validate: null
          description: Number of known MUD worlds.
      callbacks: {}

````