What I built
Most SMB website audit tools are paid SaaS, gated behind API quotas, or biased toward enterprise concerns. None weight AEO (Answer Engine Optimization) — being citable by ChatGPT, Perplexity, and Gemini — which is where SMB customer queries are migrating fastest.
So I built fdl-site-audit — a free, deterministic, zero-dependency Node.js library that scores any website 0-100 across 5 pillars: Performance (25), SEO (25), Mobile (20), Security (15), AEO/Modernity (15).
npm install fdl-site-audit
const { auditUrl } = require('fdl-site-audit');
const result = await auditUrl('https://example.com');
console.log(`Score: ${result.score}/100 (Grade ${result.grade})`);
How it is different
- Free forever. MIT-licensed, zero dependencies.
- Self-hostable. Works in any Node 18+ environment.
- AEO-aware. Most audits ignore structured data; this one weights it.
- No false precision. 5 simple pillars beat 80 obscure metrics.
- Public registry. Every audit via our hosted API gets a permanent indexed page at https://fivedaylaunch.com/sites/{domain}
Why I built this
We run fivedaylaunch.com — an AI-native studio building small business websites in 5 days for $799. The audit tooling for SMB owners is broken — too much enterprise jargon, too much paywall.
Open-sourcing it because the audit is not where we make money — the rebuild is.
Try it
- GitHub: https://github.com/Nareshdevelop/fdl-site-audit
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Public API:
curl https://fivedaylaunch.com/api/audit?url=stripe.com - MCP server for Claude: https://github.com/Nareshdevelop/fdl-mcp-server
Curious to hear what dev.to thinks — particularly about the AEO pillar. Is 'is this site citable by AI search engines' the right thing to measure in 2026?
PRs welcome.
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