Email and SMS marketing platform with a REST API, SDKs and a hosted MCP server.

MCPAPI

What your agent can do

  • Configure your MCP client to connect to Klaviyo's remote-hosted or local MCP server.

    Via MCP.

  • Private API keys can be used to read and write data to your Klaviyo account.

    Via API.

Tasks depend on the interface and permissions.

Connection methods

Choose a route that fits your agent.

MCP connection
API connection
API path
https://a.klaviyo.com/api/

Authentication
Authorization: Klaviyo-API-Key your-private-api-key

Documentation & experience

  • 2 of 2 connection paths checked
  • Latest documentation check 7 Oct 2026
View sources and checks
How documentation is checked