You will get GAS Script: Google Sheets & External API Integration


Project details
I specialize in clean Google Apps Script (GAS) and REST API integration. You will receive a reliable script that efficiently fetches, parses, and inputs complex data directly into Google Sheets. I ensure robust error handling and logical data structuring, providing functional code backed by an understanding of data integrity.
Programming Languages
JavaScriptCoding Expertise
Performance Optimization, SecurityWhat's included $100
These options are included with the project scope.
$100
- Delivery Time 2 days
- Number of Revisions 1
- Number of Sources Mined/Scraped 1
- Install Script
- Test Script
- Task Automation
Optional add-ons
You can add these on the next page.
Additional Revision
+$15
GAS Code Documentation
+$35
Additional API Endpoint
(+ 2 Days)
+$50Frequently asked questions
About Michael
Financial Automation Expert | Power BI, SharePoint | Vanilla JS, VBA
Lodz, Poland - 4:05 am local time
I combine deep professional experience in accounting for EU-funded projects with the technical proficiency to build effective, automated IT solutions. My core mission is simple: to eliminate repetitive, manual work and allow organizations to gain control over their data.
Tired of time-consuming processes in Excel? I provide clean, robust, and expertly tested code to solve them.
I specialize in:
1. Financial & Data Process Automation (Excel VBA/Power Query to clean, reliable code).
2. Google Apps Script (GAS) & API Integration (Connecting Google Sheets with external services).
3. Building Clean Frontend Logic using pure Vanilla JavaScript (Logic separated from UI).
4. Microsoft 365 Data Solutions (SharePoint List integration and Power BI Data Modeling).
I value a partnership-based approach and a deep understanding of the problem before I start working. My code is clean, logical, and easy to maintain.
I'd be happy to discuss how we can streamline your work and reduce operational risk.
Steps for completing your project
After purchasing the project, send requirements so Michael can start the project.
Delivery time starts when Michael receives requirements from you.
Michael works on your project following the steps below.
Revisions may occur after the delivery date.
API Scoping & Authorization
I confirm API accessibility, set up necessary Google Cloud authentication, and secure API keys within the Apps Script environment.
GAS Script Development & Data Parsing
I develop the GAS script to fetch data, handle JSON/XML response, and implement error handling before saving clean data to the Sheet.