Solo SaaS + Search API: Weekend MVP Build (2026)

An r/SaaS thread with 26 upvotes: "Do solo SaaS projects even work?" The replies ranged from "yes, I make $4K/mo" to "no, distribution is the hard part." For search-powered SaaS (monitoring tools, competitive intel, lead gen), the answer is that the search API cost is negligible — the real cost is distribution.

What a search-powered MVP looks like

A solo SaaS that monitors competitor pricing, tracks brand mentions, or enriches leads needs three things: a search API, an LLM for processing, and a simple web UI. The search API is the cheapest component. At $0.005/query, a product serving 100 users who each generate 10 queries/day costs $1.50/day in search.

# Weekend MVP: competitor price tracker
import requests, os
from flask import Flask, jsonify

app = Flask(__name__)
key = os.environ["SCAVIO_API_KEY"]

@app.route("/api/track/<competitor>")
def track(competitor):
    resp = requests.post("https://api.scavio.dev/api/v1/search",
        headers={"x-api-key": key},
        json={"query": f"{competitor} pricing 2026", "platform": "google", "limit": 5})
    results = resp.json().get("results", [])
    # Extract pricing signals from snippets
    return jsonify({"competitor": competitor, "results": results})

Unit economics for solo SaaS

• Scavio: $30/mo for 7,000 credits. At 10 queries/user/day, supports ~23 daily active users.
• LLM processing: ~$0.003/query for Claude Haiku or GPT-4o-mini.
• Hosting: Vercel/Railway free tier for MVP.
• Total cost for 100 users: ~$60/mo (search + LLM + hosting).
• Break-even at $10/mo pricing: 6 paying customers.

The distribution problem

The technical build is a weekend. The distribution takes months. Solo SaaS projects that work find a specific audience with a specific pain point and reach them through a specific channel. "Competitor monitoring tool" is too broad. "Competitor monitoring for Shopify store owners in the pet supplies niche" is specific enough to market.

The honest take

Solo SaaS projects work when the founder has unfair distribution advantage: an existing audience, a niche community presence, or a content marketing engine. The search API is a commodity input. The differentiator is what you build on top of it and who you build it for.