I built an AI agent to replace overpriced SEO agencies

Vincent JOSSE — Mon, 13 Apr 2026 14:19:14 +0000

Hey, I'm Vincent, a tech founder based in Paris.

SEO has always been my #1 traffic source across my businesses. No ads, no social media, just organic traffic compounding month after month.

The problem? I'm an engineer, not a copywriter. I was spending hundreds of hours writing blog posts instead of building my product.

So I tried ChatGPT. The writing was decent, but it solved maybe 20% of the problem. Keyword research, competitor analysis, internal linking, image creation, publishing: all still manual. And still on me.

The wake-up call

One evening at an afterwork in Paris, I met someone who runs an SEO agency. I told him AI content doesn't work. He laughed and said his team uses ChatGPT for every single article.

"You just need the right system around it."

He walked me through their process: gathering context from client websites, deep keyword research, competitor gap analysis, crafting prompts with all that context, adding internal links and images, then publishing and optimizing.

I got home, checked his agency's pricing: $3,800/month + $4,000 setup fee. For 2 blog posts.

The difference between my failed attempts and their results wasn't the AI. It was everything around it. The system.

So I built the system

I couldn't afford $1,000 per article, and I couldn't find any tool that automated the full workflow end to end. So I built it myself.

BlogSEO is an AI agent that handles the entire SEO content pipeline. You give it your website URL. It crawls your site, learns your brand voice, does the keyword research, analyzes competitors, generates articles with internal links and custom images, and publishes directly to your CMS. Every day.

It supports Contentful, WordPress, Webflow, custom webhooks, and more integrations are coming (Hubspot, GoHighLevel).

I use it for all my businesses. I haven't written a blog post manually in months.

What makes it different from other AI writing tools

Most AI content tools give you a text editor with a "generate" button. You still do the research, the strategy, the publishing. BlogSEO isn't a writing tool. It's an SEO agent. You set it up once and it runs on autopilot.

It costs $97/month for 30 articles. That's less than what most agencies charge for a single blog post.

Try it out

There's a free 3-day trial here if you want to try it out for your own website.

Happy to answer any questions or hear feedback. This started as a tool I built for myself, and I'd love to know what other founders think.

DEV Community: Vincent JOSSE

[Boost]