n8n flow - Excel Generation flow

Note: please read the instructions carefully, this is not an easy flow to set up.  

The n8n flow will take a JSON blueprint created by an AI agent and turn it into a fully generated Excel (.xlsx) file.

Excel files will not be simple tabular data sets - think invoice, calculators or even more complex.  

Here’s what I want to achieve:
An AI agent will analyse a requirement and output a JSON plan describing the full structure of an Excel workbook. That plan may include:
sheet names
which cells need values
which cells need formulas
layout details
any other structural instructions

The output must support:
multiple sheets
formulas (including cross-sheet references)
writing values to specific cell addresses
building the workbook entirely from the AI’s JSON
no manual steps

Everything must run inside an n8n workflow. 
 ... Show more