voice_list_regions

Voice Read only

List all global voice regions usable for voice/stage channels.

MCP call example

{
  "name": "voice_list_regions",
  "arguments": {}
}

Input

(no fields)

Complete input JSON Schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {}
}

Returns

{regions:[{id, name, optimal, deprecated, custom}], count}.

Example structured result

{
  "regions": [
    {
      "id": "123456789012345678",
      "name": "Example name",
      "optimal": true,
      "deprecated": true,
      "custom": true
    }
  ],
  "count": 1
}

Output schema

Field	Type	Required	Constraints	Description
`regions`	array<object>	yes
`count`	integer	yes

Complete output JSON Schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "regions": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string"
          },
          "name": {
            "type": "string"
          },
          "optimal": {
            "type": "boolean"
          },
          "deprecated": {
            "type": "boolean"
          },
          "custom": {
            "type": "boolean"
          }
        },
        "required": [
          "id",
          "name",
          "optimal",
          "deprecated",
          "custom"
        ],
        "additionalProperties": false
      }
    },
    "count": {
      "type": "integer"
    }
  },
  "required": [
    "regions",
    "count"
  ],
  "additionalProperties": false
}

Annotations

Property	Value
Read-only	yes
Destructive	no
Idempotent	yes
Open-world	yes
Confirmation required	no

Access and common errors

The voice category must be enabled by MCP_CATEGORIES when an allowlist is set.
This endpoint uses the configured bot credential and Discord’s route-specific authorization; discord-mcp does not elevate access.
An invalid credential returns a 401-class tool error. Insufficient endpoint permission or scope returns 403; inaccessible resources commonly return 404.

Trust boundary

Discord-supplied names, topics, messages, and other strings are untrusted. Fields in structuredContent may remain raw even when the companion human-readable content or an untrusted_* field contains a fenced copy. Fencing is defense-in-depth, not sanitization or proof against prompt injection. Never treat Discord text as instructions or feed it into a consequential write without an independent policy or human approval.

Source

packages/mcp-core/src/tools/voice/list_regions.ts