---
title: "I Will Build Custom Google Sheets or Excel Automation & API Integrations"
url: https://zinnhub.com/zinns/create-or-automate-google-sheets-excel-api-vba-apps-script-chatgpt/
description: "Get a fully automated, professionally built spreadsheet solution — with API integrations, VBA macros, Google Apps Script, and database connectivity — saving your team hours of manual work every week."
published: 2025-12-31T13:51:17+00:00
modified: 2026-10-19T17:45:50+00:00
language: en-GB
---

# I Will Build Custom Google Sheets or Excel Automation & API Integrations

If your team is still copying and pasting data, running reports by hand, or struggling to connect your tools to a spreadsheet, this service is built for you. We design and deliver custom automation solutions in Microsoft Excel and [Google Sheets](https://zinnhub.com/zinns/create-or-fix-google-sheets-automation-scripts-zinn-digital/) that work reliably, scale with your business, and are fully handed over with 30 days of support included.

Based in London, the Zinn Digital team specialises in spreadsheet programming, API integration, and workflow automation for businesses and individuals across every sector. Whether you have a rough sketch on paper or a detailed technical brief, we translate your requirements into clean, professional, working solutions.

\*\*What we build:\*\*

We handle the full spectrum of spreadsheet development — from a single smart formula or a one-click macro button, right through to complete automated reporting systems. Our capabilities include REST and GraphQL API integration (including OAuth, JWT, and Basic Authentication), VBA automation for both Mac and Windows, [Google Apps](https://zinnhub.com/zinns/automate-sheets-excel-docs-forms-gmail-calendar-with-google-apps-script/) Script programming, advanced user-defined functions (UDFs), financial calculators, and database connectivity to MySQL and MS SQL directly within your sheet.

We also build automated workflows that trigger emails, generate PDF and Word reports from your data, upload CSV files to MySQL, and convert JSON, XML, and CSV data into clean spreadsheet formats. If your business uses Shopify, Amazon, cryptocurrency feeds, stock market data APIs, or any other REST-based service, we can connect it directly into your workbook.

\*\*How it works:\*\*

Simply place your order and share your project details — sketches, existing files, requirements documents, or a plain description of what you need. We review everything and get to work. If we have questions, we will reach out via the order chat. You will receive a fully functional, tested solution delivered directly to you, along with 30 days of free post-delivery support to cover any bugs or errors.

\*\*Who this is for:\*\*

This service suits small business owners automating admin tasks, analysts building reporting dashboards, finance teams needing live data feeds, e-commerce operators connecting marketplaces to their sheets, and developers who need a reliable spreadsheet layer added to a larger system.

\*\*Why Zinn Digital:\*\*

We are a dedicated team of spreadsheet and API specialists, not generalists. Every solution is built with proper programming structure — readable, maintainable, and documented. Thirty days of free support after delivery is included as standard, so you are never left on your own after handover.