action microsoft_get_message_attachment {
  label: "Get message attachment"
  description: "Fetch a single message attachment, including its base64 contentBytes for file attachments."
  provider: microsoft
  method: GET
  path: "/v1.0/me/messages/{message_id}/attachments/{attachment_id}"
  scopes: ["Mail.ReadWrite"]
  input: @json {
    {
      "type": "object",
      "required": ["message_id", "attachment_id"],
      "additionalProperties": false,
      "properties": {
        "message_id": { "type": "string", "description": "Message id." },
        "attachment_id": { "type": "string", "description": "Attachment id." }
      }
    }
  }
  output: @json {
    {
      "type": "object",
      "additionalProperties": true,
      "properties": {
        "id": { "type": "string" },
        "name": { "type": "string" },
        "contentType": { "type": "string" },
        "size": { "type": "integer" },
        "contentBytes": { "type": "string" }
      }
    }
  }
}