Klaviyo Rate Limits
Klaviyo enforces rate limits per account using a fixed-window algorithm with two windows running simultaneously: a 1-second BURST window and a 1-minute STEADY window. Each endpoint is assigned one of five tiers (XS through XL) and both of that tier's windows apply. The tier for a given endpoint is published on that endpoint's reference page, so there is no single account-wide number.
Klaviyo Rate Limits is the machine-readable rate-limit profile for Klaviyo on the APIs.io network, conforming to the API Commons Rate Limits specification.
It captures 11 rate-limit definitions, across the XS, S, M, L, and XL tiers, measuring requests_per_second, requests_per_minute, and requests.
The profile also includes response codes documented for throttled and throttled_title.
Tagged areas include Rate Limiting, Email, and SMS.
Limits
Sources
- https://developers.klaviyo.com/en/docs/rate_limits_and_error_handling
- https://developers.klaviyo.com/en/reference/api_overview
Work with this as data
Every rate limit here is available over the APIs.io API and to AI agents over MCP.
MCP server
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https://apis.io/mcp
Tools for rate limits
4 MCP tools reach this
find_rate_limitsBrowse and filter every rate limit 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/rate-limits/klaviyo-rate-limits"curl "https://apis.io/api/v1/rate-limits?limit=25"Discovery needs no key. Ratings and market analysis are Pro.