Klaviyo is the message layer: the flow after a purchase, the campaign, and the person who received it. The order is the fact. The flow is what the brand sent because of it.
Campaigns, flows, and the attributed order when Klaviyo has one.
Attributed revenue comes in beside the channel order, so a question about what drove a sale can see the message and the marketplace together.
A new flow stays with the person who writes email. The read is the point. A listing or a price write still happens on the channel, inside the band.
Who owns Klaviyo, which flows are live, and whether attributed revenue is allowed into the same answer as marketplace revenue.
An API is the door the system opens for orders, stock, and listings. An MCP server is a tool surface the AI can call, with the same guardrails. The call names who holds the login, which objects are read, and which writes wait for a person.
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