Building a Multi-Agent Marketing Stack: Wiring GA4, Search Console, and Meta Ads into One System
Most "AI marketing automation" content online is either a no-code tool pitch or a vague thinkpiece. This is neither — it's a breakdown of the actual architecture pattern we landed on after building out a multi-channel marketing agent system: separate specialized agents per channel (SEO, paid social, content), coordinated by a thin orchestration layer, all backed by real APIs instead of scraped dashboards.
The problem with a single "marketing AI"
The obvious first instinct is one big agent with access to every tool: GA4, Search Console, Meta Ads, CMS, everything. In practice this falls apart fast:
Credential blast radius — one compromised prompt or bug can touch every connected system.
