Function isMcpSessionExpiredError

src/services/mcp/client.ts:193–206

(error: Error)

 * We check both signals to avoid false positives from generic 404s (wrong URL, server gone, etc.).
 */
export function isMcpSessionExpiredError(error: Error): boolean {
  const httpStatus =
    'code' in error ? (error as Error & { code?: number }).code : undefined
  if (httpStatus !== 404) {
    return false
  }
  // The SDK embeds the response body text in the error message.
  // MCP servers return: {"error":{"code":-32001,"message":"Session not found"},...}
  // Check for the JSON-RPC error code to distinguish from generic web server 404s.
  return (
    error.message.includes('"code":-32001') ||
    error.message.includes('"code": -32001')
  )
}

/**
 * Default timeout for MCP tool calls (effectively infinite - ~27.8 hours).