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Custom Connectors

Full read-write Claude connector for Klaviyo

Make Claude draft campaigns and build segments in Klaviyo

Stop switching to Klaviyo to set up every campaign and audience by hand. Claude drafts the email or SMS, sets the content, picks the list or segment, and updates profiles where your customer data already lives, then waits for your approval before anything sends.

Klaviyo is an email and SMS marketing platform built around customer profiles, lists, segments, and automated flows for ecommerce teams. People want Claude to do more than read metrics: to draft campaigns, build segments, and update profiles directly.

What is a Klaviyo MCP server?

A Klaviyo MCP server is a small hosted service that exposes Klaviyo's data and actions to Claude over the Model Context Protocol, so Claude can campaigns, lists, and audiences inside your own account. We build it as a custom connector with separate read and write tools, and destructive actions stay gated behind your approval.

What can Klaviyo's current connector do today?

Today, Klaviyo offers an official Claude connector in the directory, and it covers a standard tool set across campaigns, profiles, lists, and reporting. That set is general by design, so the deeper actions, custom properties, segment logic, and approval gates a real workflow needs are not always shaped the way your team works. A custom connector adds that fuller coverage with scoped, human-in-the-loop controls.

What does full read-write Klaviyo access unlock?

Full read-write Klaviyo access lets Claude draft a campaign, set the content, choose the list or segment, and queue it for your approval before sending. It can create or update profiles, add them to lists, apply or remove tags, and define segment conditions, so audience prep and campaign setup happen where your customer data already lives.

  • Draft an email or SMS campaign with subject line and content, set the audience, and leave it for review
  • Create or update a profile, including custom properties and consent fields
  • Add or remove profiles from a list to build a target audience
  • Create or update a segment from a described set of conditions
  • Apply or remove tags to organize campaigns, flows, or lists
  • Schedule or send a prepared campaign after you approve it

Can Claude create and schedule campaigns in Klaviyo?

Claude can create a campaign in Klaviyo, set the subject line and content, choose the list or segment, and queue it for review. Scheduling and sending are separate, gated actions: Claude prepares the campaign and it only goes out after you approve it, so nothing reaches your subscribers by surprise.

Can Claude update profiles and manage lists in Klaviyo?

Yes. With write access, Claude can create or update profiles in Klaviyo, edit custom properties and consent fields, and add or remove profiles from a list to build a target audience. Deletions and consent changes stay gated behind your confirmation, so audience prep happens without handing over more access than you have.

Can Claude build segments in Klaviyo from a description?

Claude can create or update a segment in Klaviyo from a set of conditions you describe, then use it as the audience for a campaign. It can also apply or remove tags to organize campaigns, flows, and lists. The connector authenticates as your account through OAuth, so it never exceeds your own access.

How a Klaviyo connector works

We build a small MCP server that authenticates to Klaviyo with OAuth and the narrowest scopes the work needs. Read tools (metrics, profile and segment lookups) and write tools (create campaign, update profile, manage list membership) are separated, and outbound or destructive actions like send and delete require your confirmation. Claude only ever has the access your own Klaviyo account already has.

Frequently asked questions

Can Claude create and schedule Klaviyo campaigns, not just read metrics?
Yes. The official Klaviyo connector covers a standard set of campaign and profile tools, but a custom connector shapes campaign creation, content, audience, and scheduling around your exact workflow. It separates read and write actions, supports your custom properties and segment logic, and requires confirmation before any send so the flow fits how your team already works.
Will Claude send a Klaviyo email or SMS without my approval?
No. Sending and scheduling are separate, gated write actions. Claude can draft the campaign, set the content, and choose the list or segment, but it only goes out after you approve it. You decide which actions run automatically and which require a confirmation step before anything reaches your subscribers.
Can Claude update profiles and build segments in Klaviyo?
Yes. With write access, Claude can create or update profiles, edit custom properties, add or remove list membership, and define segment conditions. Deletions and consent changes are gated behind your confirmation. The connector authenticates as your account through OAuth, so it never has more access to your customer data than you already do.

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