Klaviyo GraphQL Schema
This document describes a conceptual GraphQL schema for the Klaviyo marketing automation and customer data platform. Klaviyo exposes a REST API (v1–v3 and the newer revision-dated 2024-xx-xx API at `https://a.klaviyo.com/api/`), covering profiles, events, lists, segments, campaigns, flows, catalogs, coupons, metrics, reviews, templates, webhooks, tags, data privacy, and reporting. The GraphQL schema below models those same capabilities as a typed, queryable graph.
Overview
Klaviyo GraphQL Schema is a GraphQL API specification published by Klaviyo on the APIs.io network.
This document describes a conceptual GraphQL schema for the Klaviyo marketing automation and customer data platform. Klaviyo exposes a REST API (v1–v3 and the newer revision-dated 2024-xx-xx API at https://a.klaviyo.com/api/), covering profiles, events, lists, segments, campaigns, flows, catalogs, coupons, metrics, reviews, templates, webhooks, tags, data privacy, and reporting. The GraphQL schema below models those same capabilities as a typed, queryable graph.
The specification includes 4 reference links.
Tagged areas include Marketing, Email, SMS, Customer Data, and E-Commerce.
Endpoint
References
- Developer Portal https://developers.klaviyo.com/
- API Reference https://developers.klaviyo.com/en/reference/api_overview
- OpenAPI spec https://github.com/klaviyo/openapi
- Changelog https://developers.klaviyo.com/en/docs/changelog_
Related API Specs
Work with this as data
Every GraphQL schema here is available over the APIs.io API and to AI agents over MCP.
MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
Tools for graphql
4 MCP tools reach this
find_graphqlBrowse and filter every GraphQL schema in the catalog.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.
Call it yourself
curl for this page
curl "https://apis.io/api/v1/graphql/klaviyo-graphql"
curl "https://apis.io/api/v1/graphql?limit=25"
Discovery needs no key. Ratings and market analysis are Pro.