SERP Similarity Tool with HasData & Streamlit

#devchallenge #hacktoberfest #opensource #python

Hacktoberfest: Maintainer Spotlight

This is a submission for the 2025 Hacktoberfest Writing Challenge: Maintainer Spotlight

I needed a quick way to check how similar Google SERPs are for different keywords. Couldn’t find a simple, free tool that worked well, so I built one.

It uses HasData’s SERP API and runs on Streamlit. HasData gives you 1000 free credits when you sign up, and their API scales smoothly if you need more. The app is live, and the code is open on GitHub.

Run on Streamlit | View on GitHub

The Problem

SEO tools that actually give you a similarity breakdown of SERPs are either limited or behind a paywall. Keyword Insights worked, but it capped at five keywords and now costs money. That’s frustrating when you need quick checks for multiple keywords.

I wanted something fast and simple.

The Solution

The tool compares multiple keywords and shows how much their SERPs overlap.

Powered by HasData SERP API
Built with Streamlit
Works with any number of keywords
Free to start with HasData’s trial credits

Just enter your API key, add keywords (comma or new line), and get a SERP similarity breakdown in seconds.

How to Use

Step 1: Get a HasData API Key
Sign up at HasData and get your 1000 free credits.

Step 2: Run the App
Open the Streamlit link or clone the GitHub repo. No setup needed, just run it.

Step 3: Enter Keywords
Paste your keywords separated by commas or new lines.

Step 4: Check Results
The tool shows a SERP similarity breakdown with clear, structured data.

Under the Hood

Python 3.11+
Streamlit for UI
HasData SERP API for search data
Simple to extend with filters, charts, or exports
Deployed via Streamlit Cloud

Clone the repo, set your API key, install requirements pip install -r requirements.txt, and run streamlit run streamlit_app.py, or just use the hosted version.