Function toolFileKind

packages/hosts/mcp/src/tool-server.ts:583–601

(file: ToolFileValue)

  file.mimeType.split(";")[0]?.trim().toLowerCase() ?? "";

const toolFileKind = (file: ToolFileValue): "image" | "audio" | "text" | "resource" => {
  const mimeType = normalizedMimeType(file);
  if (mimeType.startsWith("image/")) return "image";
  if (mimeType.startsWith("audio/")) return "audio";
  if (
    mimeType.startsWith("text/") ||
    mimeType === "application/json" ||
    mimeType.endsWith("+json") ||
    mimeType === "application/xml" ||
    mimeType.endsWith("+xml") ||
    mimeType === "application/javascript" ||
    mimeType === "application/x-javascript" ||
    mimeType === "application/yaml" ||
    mimeType === "application/x-yaml"
  ) {
    return "text";
  }
  return "resource";
};

const bytesFromBase64 = (base64: string): Uint8Array => {
  const binary = atob(base64);