STACK · FIVE LAYERS
I — V

What's in the stack.

HubSpot, n8n, Claude, BigQuery, Measurement. That's the stack.

  1. I
    01

    HubSpot

    HubSpot isn't 'the CRM'. It's the pipeline engine. Lifecycle, lead routing, task generation, it all happens in workflows, not in drag-and-drop marketing tools.

    WorkflowsListsPropertiesSequences
    Layer detail
  2. II
    02

    n8n

    n8n self-hosted on a Hetzner VM. Multi-step sequences, webhook triggers, every HTTP call you need. No 'Pro tier' nonsense, no 'the update broke everything'.

    Webhook TriggersHubSpot NodeHTTP RequestSlack Node
    Layer detail
  3. III
    03

    Claude

    Claude wired into HubSpot records via the Model Context Protocol. Custom prompts per use case, batch-ready, token logs in BigQuery you can watch.

    Anthropic APIMCP ServerVercel AI SDKPrompts-as-Code
    Layer detail
  4. IV
    04

    BigQuery

    Sink for HubSpot, GA4, LinkedIn Ads. A joined fact table behind it. Looker Studio or Metabase as the frontend. C-level clicks one URL instead of waiting for PowerPoint.

    BigQueryAirbyteLooker StudioMetabase
    Layer detail
  5. V
    05

    Measurement

    When iOS14 kills your tracking and the cookie banner hides 40-70% of your conversions. Statistical MMM on aggregate data, no PII, no user IDs, no cookies. Channel contribution + saturation curves you can actually measure.

    PyMC-MarketingBigQueryAirbyteCloud Run
    Layer detail

Each layer runs on its own. Together they're one pipeline.

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