Tutorial

How to Use Search Data to Validate What NOT to Build

Use search API data to find saturated markets and avoid building products that already have strong incumbents. Python tutorial.

An r/microsaas post warned about building into saturated markets. The problem: most validation frameworks focus on finding demand, not checking for oversupply. This tutorial builds a negative validation pipeline that searches for existing solutions and quantifies market saturation before you commit.

Prerequisites

  • Scavio API key
  • Python 3.8+

Walkthrough

Step 1: Define saturation signals

What indicates a market is too crowded.

Python
saturation_signals = {
    'ad_heavy': 0,    # Number of ads on SERP
    'established_players': 0,  # Funded companies in results
    'review_sites': 0,  # G2/Capterra listicles
    'alternative_pages': 0,  # 'X alternatives' pages
    'reddit_complaints': 0,  # Complaints about existing tools
}

Step 2: Search for existing solutions

Multiple queries to gauge market density.

Python
import requests, os
H = {'x-api-key': os.environ['SCAVIO_API_KEY']}

def check_saturation(product_idea):
    queries = [
        f'best {product_idea} software',
        f'{product_idea} tools comparison',
        f'{product_idea} alternatives',
        f'{product_idea} pricing',
    ]
    all_results = []
    for q in queries:
        data = requests.post('https://api.scavio.dev/api/v1/search',
            headers=H, json={'platform': 'google', 'query': q}).json()
        all_results.extend(data.get('organic_results', []))
    return all_results

Step 3: Score saturation level

Count signals from search results.

Python
def score_saturation(results, idea):
    score = {'ads': 0, 'listicles': 0, 'funded': 0, 'alternatives_pages': 0}
    funded_indicators = ['series a', 'series b', 'raised', 'backed by', 'yc']
    for r in results:
        snippet = (r.get('snippet', '') + r.get('title', '')).lower()
        if 'alternative' in snippet: score['alternatives_pages'] += 1
        if any(f in snippet for f in funded_indicators): score['funded'] += 1
        if any(s in snippet for s in ['g2.com', 'capterra', 'top 10', 'best 10']): score['listicles'] += 1
    total = sum(score.values())
    return {'score': total, 'breakdown': score,
            'verdict': 'Saturated' if total > 15 else 'Competitive' if total > 8 else 'Open'}

Step 4: Check Reddit for unmet needs

Even saturated markets may have underserved niches.

Python
def find_unmet_needs(idea):
    data = requests.post('https://api.scavio.dev/api/v1/search',
        headers=H,
        json={'platform': 'reddit', 'query': f'{idea} frustrating OR missing OR wish'}).json()
    complaints = data.get('results', [])
    print(f'Found {len(complaints)} complaint threads')
    for c in complaints[:5]:
        print(f"  - {c.get('title', '')}")
    return complaints

Python Example

Python
import os, requests
H = {'x-api-key': os.environ['SCAVIO_API_KEY']}

def validate_not_to_build(idea):
    for q in [f'best {idea}', f'{idea} alternatives', f'{idea} comparison']:
        data = requests.post('https://api.scavio.dev/api/v1/search', headers=H,
            json={'platform': 'google', 'query': q}).json()
        alts = sum(1 for r in data.get('organic_results', []) if 'alternative' in r.get('title', '').lower())
        print(f'{q}: {len(data.get("organic_results", []))} results, {alts} alternatives pages')

validate_not_to_build('project management tool')

JavaScript Example

JavaScript
const res = await fetch('https://api.scavio.dev/api/v1/search', {
  method: 'POST',
  headers: {'x-api-key': process.env.SCAVIO_API_KEY, 'Content-Type': 'application/json'},
  body: JSON.stringify({platform: 'google', query: `best ${idea} software`})
});
const data = await res.json();
const saturation = data.organic_results?.filter(r => r.title.toLowerCase().includes('alternative')).length;

Expected Output

JSON
Saturation report: ad density, funded competitor count, alternatives page count, listicle coverage, and verdict (Saturated/Competitive/Open). 4 Google + 1 Reddit query = $0.025.

Related Tutorials

Frequently Asked Questions

Most developers complete this tutorial in 15 to 30 minutes. You will need a Scavio API key (free tier works) and a working Python or JavaScript environment.

Scavio API key. Python 3.8+. A Scavio API key gives you 500 free credits per month.

Yes. The free tier includes 500 credits per month, which is more than enough to complete this tutorial and prototype a working solution.

Scavio has a native LangChain package (langchain-scavio), an MCP server, and a plain REST API that works with any HTTP client. This tutorial uses the raw REST API, but you can adapt to your framework of choice.

Start Building

Use search API data to find saturated markets and avoid building products that already have strong incumbents. Python tutorial.