Function isUnknownToolMessage

packages/plugins/mcp/src/sdk/invoke.ts:58–64

(message: string, toolName: string)

const escapeRegExp = (value: string): string => value.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");

export const isUnknownToolMessage = (message: string, toolName: string): boolean => {
  const name = escapeRegExp(toolName);
  return new RegExp(
    `(?:unknown tool:?\\s*"?${name}"?|tool\\s+"?${name}"?\\s+(?:not found|is not available|does not exist))`,
    "i",
  ).test(message);
};

const asProtocolError = (cause: unknown): ProtocolError | undefined => {
  const sdk = mcpClientSdkIfLoaded();