Agency SEO Audits at Scale

If you run an agency, you already know the part nobody talks about: half the job is reporting, not auditing. The client wants a PDF with their logo on it. The project manager wants a dashboard that doesn’t require a login to yet another tool. The junior SEO on your team wants to know which of the 47 sites in the portfolio actually regressed this week.

Most audit tools were built for a single user looking at a single site. You can tell because the pricing page assumes you’ll pay per seat and the export button spits out something that looks like it was designed in 2011.

What agencies actually need

Every agency owner I’ve talked to lands on the same short list. It’s almost eerie how consistent it is:

• White-label reports. The client shouldn’t see a competitor’s logo on the deliverable they’re paying you for.
• Multi-site dashboards. One place to see every client at once, sorted by whatever’s on fire.
• An API that actually works. Not a page that says “API” and then hands you three endpoints and a 10-requests-per-minute cap.
• Change tracking over time. Because “did the dev team actually fix the canonical issue” is a question you’ll ask every week for the rest of your career.
• Pricing that survives adding the 50th client. Per-site pricing models punish growth.

That’s the whole list. Everything else is a nice-to-have that nobody actually uses.

How BSA handles the agency case

I built Black SEO Analyzer because every tool I tried either broke on JavaScript, charged per seat, or made branding a report feel like a punishment for having clients. The Agency License is for people managing more than a handful of sites who are tired of duct-taping their reporting together every time a client asks for a PDF.

A few specifics that matter:

• One one-time license, unlimited sites. $1,999 for the Agency License, no per-site upcharge, no subscription. Add a client, run the audit, move on.
• Branded HTML reports. The HTML report runs on templates you can customize, so the client sees your logo and your colors instead of mine.
• A CLI with structured output. Not an API tier you find out about after you sign up. The CLI writes JSON, JSONL, CSV, and XML, so you can pipe audit data into Looker, Metabase, a Google Sheet, or that internal Rails app your agency has been threatening to rewrite for two years.
• Every crawl kept for comparison. Crawls land in a local SQLite database, so a cron job can run a site weekly and a few lines of SQL show what changed since last time. If a dev pushed a release that nuked 300 canonical tags, you’ll know on Monday morning instead of when the client emails you in a panic.
• JavaScript rendering. Because half your clients are on Shopify, Next.js, or some headless CMS that makes Googlebot work for its dinner.

The follow-through problem

Delivering an audit is the easy part. Proving three months later that the 180 issues actually got fixed is where most agencies go quiet.

BSA keeps every crawl in its database. You can query when a specific issue first appeared and the crawl where it disappeared, then line that up against the client’s traffic chart. Clients renew when you can pull up a timeline and show them exactly when the problem appeared, when it got fixed, and what moved in traffic afterward.

For the workflow side of running audits across a big portfolio, the enterprise SEO audit strategies post covers how I structure the log-first approach that scales past a few dozen sites. If you’re still evaluating which tool actually fits how your team works, choosing an SEO audit tool around your workflow is worth reading before you commit to anything. And if your current crawler keeps missing site-specific issues that matter to your clients, what most SEO audit software leaves on the table explains exactly what to look for.

One-time license, no subscription. Pricing - or start a free trial first.

-Sethers