I’ve been using Kevin Maguire’s MIRENA system for about a year now. Every week. It’s become a core part of how I do semantic SEO work, and I’ve never mentioned it here because I kept waiting for the catch. There isn’t one.
MIRENA is a Custom GPT built specifically for semantic SEO. Not a generic “SEO assistant” that regurgitates the same advice you’ve read a hundred times. It’s a purpose-built system with 20 specialized agents that handle different parts of the semantic SEO workflow.
What It Actually Does
The system covers the full scope of semantic SEO work:
Topical map generation. Give it a topic and it builds out the full topical structure, including hub pages, supporting content, and the relationships between them.
Entity-level SERP audits. It analyzes what entities competitors are covering and identifies gaps in your own content.
Information gain modeling. It identifies what unique value your content can add beyond what already ranks.
Semantic content structuring. It helps structure content around entities and their relationships rather than just keywords.
Internal linking architecture. It maps out how pages should connect based on topical relationships.
Content briefs and drafting. It generates briefs and can draft content that follows semantic SEO principles.
I’ve used it for building topical maps, generating content briefs, drafting content, analyzing existing content, and finding entity and content gaps. One client I’ve been working with using this system has seen organic search traffic increase over 50% year-over-year.
Why I’m Mentioning It Now
Kevin just opened up a founder tier at €20 per month. That price locks in for life as long as you stay subscribed.
To put that in perspective: most SEO tools run €80 to €150 per month. A single content brief from a freelancer costs €75 or more. A proper audit runs €200 and up.
MIRENA does all of it for €20.
I’m not an affiliate. I don’t get anything if you sign up. I’ve just been quietly using this tool every week and watching it get better, and €20 per month for what it does is absurd.
What You Need
You’ll need a ChatGPT Plus subscription to use Custom GPTs. MIRENA itself is €20 per month on top of that.
If you do any kind of semantic SEO work, topical mapping, entity optimization, or content structuring, this is worth trying.
Access MIRENA here: https://chatgpt.com/g/g-685f7804278c81919cef6aebfd1b68e2-mirena-labs-semantec-seo
Learn more about MIRENA here: https://www.linkedin.com/pulse/semantec-seo-mirena-gpt-founders-edition-kevin-maguire-euquf/
Watch Kevin walk through getting started: https://www.youtube.com/watch?v=DqDdC_nQKO
