Klaviyo

Klaviyo Metrics API

metrics

Documentation GitHub OpenAPI

Operations 24

GET /api/metrics Get Metrics #

GET /api/metrics/{id} Get Metric #

GET /api/metric-properties/{id} Get Metric Property #

GET /api/custom-metrics Get Custom Metrics #

POST /api/custom-metrics Create Custom Metric #

GET /api/custom-metrics/{id} Get Custom Metric #

PATCH /api/custom-metrics/{id} Update Custom Metric #

DELETE /api/custom-metrics/{id} Delete Custom Metric #

GET /api/mapped-metrics Get Mapped Metrics #

GET /api/mapped-metrics/{id} Get Mapped Metric #

PATCH /api/mapped-metrics/{id} Update Mapped Metric #

POST /api/metric-aggregates Query Metric Aggregates #

GET /api/metrics/{id}/flow-triggers Get Flows Triggered by Metric #

GET /api/metrics/{id}/relationships/flow-triggers Get IDs for Flows Triggered by Metric #

GET /api/metrics/{id}/metric-properties Get Properties for Metric #

GET /api/metrics/{id}/relationships/metric-properties Get Property IDs for Metric #

GET /api/metric-properties/{id}/metric Get Metric for Metric Property #

GET /api/metric-properties/{id}/relationships/metric Get Metric ID for Metric Property #

GET /api/custom-metrics/{id}/metrics Get Metrics for Custom Metric #

GET /api/custom-metrics/{id}/relationships/metrics Get Metric IDs for Custom Metric #

GET /api/mapped-metrics/{id}/metric Get Metric for Mapped Metric #

GET /api/mapped-metrics/{id}/relationships/metric Get Metric ID for Mapped Metric #

GET /api/mapped-metrics/{id}/custom-metric Get Custom Metric for Mapped Metric #

GET /api/mapped-metrics/{id}/relationships/custom-metric Get Custom Metric ID for Mapped Metric #

Every API 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 apis

7 MCP tools reach this

find_apisBrowse and filter every API in the catalog.
get_api_artifactsOne API's artifacts, grouped by type.
get_openapiThe primary OpenAPI for this API.
find_similar_apisAPIs that look like this one.
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.

All 92 tools →

Call it yourself

curl for this page

This API

curl "https://apis.io/api/v1/apis/klaviyo-metrics-api"

All apis

curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

openapi: 3.2.0
info:
  title: Klaviyo Metrics API
  version: '2026-04-15'
  description: The Klaviyo REST API. Please visit https://developers.klaviyo.com for more details.
  contact:
    name: Klaviyo Developer Experience Team
    email: developers@klaviyo.com
    url: https://developers.klaviyo.com
  termsOfService: https://www.klaviyo.com/legal/api-terms
  license:
    name: License
    url: https://www.klaviyo.com/legal
servers:
- url: https://a.klaviyo.com
  description: Production
security:
- Klaviyo-API-Key: []
tags:


# --- truncated at 32 KB (102 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/klaviyo/refs/heads/main/openapi/klaviyo-metrics-api-openapi.yml

Klaviyo Metrics API

Operations 24

Documentation

Specifications

Other Resources

Work with this as data

MCP server

Tools for apis

Call it yourself

Get an API key

OpenAPI Specification