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

# List Languages

> **Tool name:** `v1_list_languages` · **Behaviour:** 🔒 Read-only

List every language an event can be published in, as ISO 639-1 codes. Call this before v1_create_event when the user asks for languages: languageCodes is matched against these, and the first code you send becomes the event's default language. The list is short, fixed and the same for every organization, so it is returned in full and takes no arguments.

**Same as Public API:** [Get the supported event languages](/api-reference/events/get-the-supported-event-languages) (`GET /v1/events/languages`)



## OpenAPI

````yaml https://api.prod.zuddl.com/api/v3/api-docs/mcp-tools post /tools/v1_list_languages
openapi: 3.1.0
info:
  title: Zuddl MCP Tools Reference
  description: >-
    The Zuddl MCP server lets AI assistants such as Claude and ChatGPT work with
    your Zuddl organization through the [Model Context
    Protocol](https://modelcontextprotocol.io). This reference lists every tool
    the server offers. It is generated from the live server, so it always
    matches what your assistant sees.


    # Connecting


    Add `https://setup.zuddl.com/api/mcp` as a remote MCP server in your
    assistant. It signs you in to Zuddl with OAuth and then calls tools on your
    behalf, with your permissions. AI features must be enabled for your
    organization.


    # Calling a tool


    Assistants call a tool with a JSON-RPC `tools/call` request whose `name` is
    the tool name and whose `arguments` match the request body documented on the
    tool's page. The `/tools/<name>` paths in this reference identify tools;
    they are not HTTP endpoints.


    # Behaviour labels


    | Label | Meaning |

    | --- | --- |

    | 🔒 Read-only | Reads data and changes nothing. |

    | ✏️ Write | Creates or updates data, but does not delete it. |

    | ⚠️ Destructive | Deletes or removes data. Most assistants ask you to
    approve these calls. |

    | 🔁 Idempotent | Calling it again with the same arguments has no further
    effect. |


    A tool that mirrors a Public API endpoint links to that endpoint's page.
    MCP-only tools have no Public API equivalent.
  version: 1.0.0
servers:
  - url: https://setup.zuddl.com/api/mcp
    description: Zuddl MCP server
security:
  - oauth: []
tags:
  - name: Events
  - name: Attendees
  - name: Sessions
  - name: Speakers
  - name: Sponsors
  - name: Locations
  - name: Teams
  - name: Brand Kits
  - name: Registration flows & tickets
  - name: Analytics
paths:
  /tools/v1_list_languages:
    post:
      tags:
        - Events
      summary: List Languages
      description: >-
        **Tool name:** `v1_list_languages` · **Behaviour:** 🔒 Read-only


        List every language an event can be published in, as ISO 639-1 codes.
        Call this before v1_create_event when the user asks for languages:
        languageCodes is matched against these, and the first code you send
        becomes the event's default language. The list is short, fixed and the
        same for every organization, so it is returned in full and takes no
        arguments.


        **Same as Public API:** [Get the supported event
        languages](/api-reference/events/get-the-supported-event-languages)
        (`GET /v1/events/languages`)
      operationId: v1_list_languages
      requestBody:
        description: The tool's `arguments`, as sent in a JSON-RPC `tools/call` request.
        content:
          application/json:
            schema:
              type: object
              properties: {}
        required: true
      responses:
        '200':
          description: A JSON-RPC `tools/call` result. The tool's output is in `content`.
components:
  securitySchemes:
    oauth:
      type: http
      description: >-
        OAuth 2.1 access token. MCP clients obtain it themselves (dynamic client
        registration + PKCE) when you connect them to the server URL above.
      scheme: bearer

````

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