02 · A 5-agent AI system that builds marketing journeys · 2026
A multi-agent system I built in Claude Code that takes a lifecycle campaign from brief to live workflow, with a human sign-off at every critical step.
0
Specialised agents
3 → 0
People needed per campaign build
24–0 hrs
Brief to live journey, down from a week
The problem
- Every lifecycle journey meant a brief, copy, design, email templates, WhatsApp templates and a workflow.
- That took a 3-person team about a week per campaign.
- The handoffs between those steps were where funnels leaked.
What I built
- 1
Orchestrator
Takes the inputs
- 2
Architect
Writes the brief
You approve on Slack
- 3
Content & Design
Copy and visuals
You approve on Slack
- 4
Implementation
HubSpot + Meta
You approve on Slack
- 5
Analyst
15-day report
01
Orchestrator
Takes my inputs through a UI: the segment, the channels and the campaign type.
02
Architect
Writes a detailed brief and sends it to me on Slack for approval.
03
Content & Design
Calls Gemini for copy and NanoBanana for visuals, then posts the full content package on Slack for sign-off.
04
Implementation
Builds the email templates in HubSpot, submits WhatsApp templates to Meta and creates the HubSpot workflow. I review it, then switch it on.
05
Analyst
After 15 days, pulls the metrics, finds what's working and what isn't, and delivers a PDF report on Slack.
Stack · Claude Code · HubSpot API · Meta API · Slack · Google Workspace · Gemini
The result
- A 3-person, one-week campaign build became a 24 to 48 hour job for one person.
- Faster journey creation, fewer funnel leaks, and measurable improvements in counselling show-up rates, rebooking rates and conversions.
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