Klaviyo MCP server: setup, pricing & agent-readiness

How to connect Klaviyo MCP to Claude Desktop

Add this block to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows), then restart Claude Desktop. Cursor and Codex use a similar schema.

{
  "mcpServers": {
    "klaviyo": {
      "command": "npx",
      "args": ["-y", "<server-package-name>"],
      "env": {
        "KLAVIYO_API_KEY": "your-api-key-here"
      }
    }
  }
}
// Server source: https://developers.klaviyo.com/mcp
// Check the server's README for the exact "command" and required env vars.

Some MCP servers require an API key. Check the source page for setup: developers.klaviyo.com/mcp.

Does Klaviyo MCP cost extra?

Included with subscription

Klaviyo ships an official MCP server that uses your existing subscription credentials.

No separate MCP licence to buy. You pay for your Klaviyo plan, the MCP server queries that account.
Whether it's gated to a specific tier wasn't extracted automatically — verify the access requirements on the MCP page or pricing docs.

Klaviyo subscription pricing

Plan	Monthly	Annual / mo
Free	—	—
Marketing	$45	—
Marketing Analytics	$100	—
Advanced Klaviyo Data Platform (CDP)	$500	—
Customer Agent	$140	—
Customer Hub	$20	—
Helpdesk	$185	—
Professional Services - Standard	—	—
Professional Services - Professional	Contact sales	—
Professional Services - Enterprise	Contact sales	—
Enterprise	Contact sales	—

Source: klaviyo.com/pricing. Scraped 2026-05-19.

Klaviyo also publishes a REST API

Klaviyo's API is included with every paid plan, but SMS, MMS, and WhatsApp are billed per message.

API docs

developers.klaviyo.com/en/reference/api_overview

Auth method

both

SDK languages

—

OpenAPI spec

—

Webhooks

—

Structured outputs

—

See Klaviyo API page

What you can do with Klaviyo from an AI agent

Three shapes of agent workflow. Pick the row that matches how you actually use Claude / Cursor / Codex day to day.

INDIE / SOLO

Skip the dashboard, ask Claude

"What changed this week?" answered in seconds
Quick one-off questions without leaving the editor
Pipe Klaviyo data into your personal notes / docs without writing a script

Effort: 30 seconds — paste the config, restart Claude

AGENCY

Run client analysis at agent speed

Hand the MCP server to your team — every consultant can ask Claude about any client's Klaviyo account
Multi-account workflows without context-switching the Klaviyo UI
Reports you'd normally spend hours on, done before standup

Effort: An afternoon — set up auth per client

IN-HOUSE TEAM

Production agent workflows

Embed in your internal Codex / Cursor agents that triage Klaviyo data daily
Combine with other MCP servers in a multi-step agent chain
Constrain agents to read-only roles to keep production Klaviyo safe

Effort: Days — security review + role config

Limits and gotchas

Official MCP server — published by Klaviyo themselves, so it should track product changes.
Fallback: the REST API works for any flow the MCP server doesn't cover.
Auth flow: MCP servers usually inherit the underlying API auth method (both). Expect to configure that on first install.
Rate limits: MCP calls count against your underlying Klaviyo API quota. Burst usage from a curious agent can drain a daily allowance fast.

7/10

Agent-readiness verdict

Solid agent foundation. Klaviyo has an official MCP server and documented API with both OAuth and API key auth, enabling direct Claude and ChatGPT integration for ecommerce automation workflows. The lack of OpenAPI specs and structured outputs support means agents can't auto-discover all capabilities or reliably parse complex responses without manual schema definition.

MCP server availableOfficial MCP (on tool's own domain)Public API with docsNative Claude integrationNative ChatGPT integration

Scored 2026-05-19 by Joonas (TMB).

Klaviyo MCP & API FAQ

Is the Klaviyo MCP server official?+

Yes — published on Klaviyo's own domain at https://developers.klaviyo.com/mcp.

Can I use the Klaviyo MCP with Cursor or Codex?+

Yes — MCP is a protocol, not Claude-specific. Any MCP-capable client (Cursor, Codex, Windsurf, Zed) can use the same server config with minor path adjustments.

Does Klaviyo have a public API?+

Yes — public REST API at developers.klaviyo.com/en/reference/api_overview, auth via both.

Which LLMs does Klaviyo integrate with directly?+

ChatGPT, Claude, Perplexity, Copilot. Direct integrations skip the need for custom API wrappers.

Sources

Klaviyo official site: https://www.klaviyo.com
MCP server page: https://developers.klaviyo.com/mcp
API docs: https://developers.klaviyo.com/en/reference/api_overview
Pricing source: https://www.klaviyo.com/pricing (scraped 2026-05-19)

Data verified by Joonas on the dates shown. MCP server status auto-rechecked weekly.

Klaviyo MCP Server

What is the Klaviyo MCP server?

What you actually do with the Klaviyo MCP