Can I code SEMrush?

The dashboard around SEO data — keyword lists, position tracking, a UI — is buildable. The actual product is a continuously updated index of billions of keywords and search results, crawled and refreshed at a scale no solo build gets near.

VIBE SCORE 69/100

how this is worked out

categoryseo

time to codenot worth starting

Just pay

their price$139.95/mo · $1679/yr

last checked2026-08 · source ↗

A moderate score above just means the individual parts are buildable — it isn't a build/buy recommendation on its own. Here's the actual reason this one's still JUST PAY:

Why CanICodeThis says Just pay

Tracking your own site's ranking for a specific keyword (via a search API) is a bounded, achievable feature
A dashboard showing rank changes over time for a tracked keyword list is ordinary charting
For monitoring a handful of your own keywords, a much narrower tool is genuinely sufficient

What you give up building SEMrush yourself

Their competitive keyword and backlink database comes from crawling and indexing a meaningful fraction of the web, continuously — not something one build replicates
Search-volume estimates require aggregated query data at a scale only a few companies have access to
The site-audit crawler that flags technical SEO issues across thousands of pages is real, ongoing crawler engineering

What you'd have to build

The parts this build actually needs, each rated on its own — the average is the Vibe Score above.

Landing page	99
CRUD database	95
Proprietary web-scale index	12

How to build your own SEMrush

Don't build a competitive keyword database — build a narrow rank-tracking tool for your own site, the same shape as this register's Ahrefs entry: 1. A scheduled job checking your own site's ranking for a fixed keyword list via an existing search API. 2. A dashboard charting rank over time per keyword — standard time-series visualization. 3. This register's own site-crawler build spec (technical-seo-audit-crawler) for basic on-site issues: broken links, missing meta tags. That covers real single-site SEO monitoring. Out of scope: their competitive keyword and backlink database, built from continuously crawling and indexing a meaningful fraction of the web — not something one build replicates — and search-volume estimates, which need aggregated query data at a scale only a few companies have.

What it actually costs to build

Two real costs, not just "free": the AI agent's own usage, and hosting once it's running. Both are estimated from this app's own effort rating and component list — see the assumptions on the method page.

AI agent — with a subscription (Claude Pro/Max, Cursor, etc.)	$0 marginal
AI agent — pay-per-use API, no subscription	$86–$172 one-time
Hosting, once it's running	$0/mo (free tier)
Domain name, if you want your own	~$12/yr

SEMrush costs $139.95/mo. Even paying per-token with no subscription, and accounting for hosting, this build pays for itself in about 2 months.

Questions

Can I code SEMrush?

Just pay. The dashboard around SEO data — keyword lists, position tracking, a UI — is buildable. The actual product is a continuously updated index of billions of keywords and search results, crawled and refreshed at a scale no solo build gets near.

How much does SEMrush cost?

SEMrush costs $139.95/mo (about $1679/yr) as of 2026-08. That's what a working rebuild would save you.

What do I lose by building it myself?

Their competitive keyword and backlink database comes from crawling and indexing a meaningful fraction of the web, continuously — not something one build replicates Search-volume estimates require aggregated query data at a scale only a few companies have access to The site-audit crawler that flags technical SEO issues across thousands of pages is real, ongoing crawler engineering