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The SEO Audit API Built for Developers

Published 2026-02-25

Most SEO tools are built for marketers. Dashboards, charts, PDFs. But if you're a developer who needs SEO data in your app, you need an API — not a GUI.

The Problem

Want to add SEO checking to your app? Your options are:

• Moz, Ahrefs, SEMrush APIs: $99-249/month minimum. Enterprise-oriented. Complex auth.
• Build it yourself: Weeks of work. HTML parsing, scoring logic, edge cases, maintenance.
• Free online tools: No API. Can't integrate into anything.

There's a gap: a simple, affordable API that gives you SEO data as clean JSON.

SEO Score API

One endpoint. One request. Structured response.

GET /audit?url=https://example.com
Header: X-API-Key: your_key

Returns a JSON object with:

• Overall score (0-100) and letter grade (A+ to F)
• 28 individual checks across 5 categories
• Each check: name, status (pass/warning/fail), score, recommendation
• Prioritized list of fixes sorted by severity

Quick Start

Get a key (free, instant, no credit card):

curl -X POST https://seoscoreapi.com/signup \
  -H "Content-Type: application/json" \
  -d '{"email": "dev@example.com"}'

Run an audit:

curl -H "X-API-Key: ssa_your_key" \
  "https://seoscoreapi.com/audit?url=https://stripe.com"

Python Example

import requests

resp = requests.get(
    "https://seoscoreapi.com/audit",
    params={"url": "https://stripe.com"},
    headers={"X-API-Key": "ssa_your_key"}
)

data = resp.json()
print(f"Score: {data['score']}/100 ({data['grade']})")

for p in data["priorities"]:
    print(f"  [{p['severity']}] {p['issue']}")
    print(f"    Fix: {p['fix']}")

JavaScript/Node Example

const resp = await fetch(
  "https://seoscoreapi.com/audit?url=https://stripe.com",
  { headers: { "X-API-Key": "ssa_your_key" } }
);
const data = await resp.json();
console.log(`Score: ${data.score}/100 (${data.grade})`);

What Makes This Different

• Simple: One endpoint, clear JSON response, no SDK required.
• Fast: Most audits complete in under 3 seconds.
• Affordable: Free tier included. Paid plans from $5/month.
• Actionable: Every issue comes with a specific fix recommendation.
• No vendor lock-in: Standard REST API. Works with any language.

Full interactive docs at /docs (OpenAPI/Swagger).