{
"openapi": "3.0.2",
"info": {
"title": "Klaviyo API",
"version": "2026-07-15",
"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": []
}
],
"paths": {
"/api/catalog-items/{id}/categories": {
"get": {
"operationId": "get_categories_for_catalog_item",
"summary": "Get Categories for Catalog Item",
"description": "Get all catalog categories that an item with the given item ID is in.\n\nCatalog categories can be sorted by the following fields, in ascending and descending order:\n`created`\n\nReturns a maximum of 100 categories per request.
*Rate limits*:
Burst: `350/s`
Steady: `3500/m`\n\n**Scopes:**\n`catalogs:read`\n\n[OpenAPI Spec](https://raw.githubusercontent.com/klaviyo/openapi/main/openapi/stable/apis/get_categories_for_catalog_item.json)",
"parameters": [
{
"name": "id",
"in": "path",
"description": "The catalog item ID is a compound ID (string), with format: `{integration}:::{catalog}:::{external_id}`. Currently, the only supported integration type is `$custom`, and the only supported catalog is `$default`.",
"required": true,
"schema": {
"description": "The catalog item ID is a compound ID (string), with format: `{integration}:::{catalog}:::{external_id}`. Currently, the only supported integration type is `$custom`, and the only supported catalog is `$default`.",
"type": "string",
"example": "$custom:::$default:::SAMPLE-DATA-ITEM-1",
"nullable": true
}
},
{
"name": "fields[catalog-category]",
"in": "query",
"description": "For more information please visit https://developers.klaviyo.com/en/v2026-07-15/reference/api-overview#sparse-fieldsets",
"required": false,
"schema": {
"type": "array",
"items": {
"type": "string",
"enum": [
"external_id",
"id",
"name",
"updated"
]
}
},
"explode": false
},
{
"name": "filter",
"in": "query",
"description": "For more information please visit https://developers.klaviyo.com/en/v2026-07-15/reference/api-overview#filtering
Allowed field(s)/operator(s):
`ids`: `any` (string)
`item.id`: `equals` (string)
`name`: `contains` (string)",
"schema": {
"type": "string",
"example": "any(ids,['$custom:::$default:::SAMPLE-DATA-CATEGORY-APPAREL'])"
}
},
{
"name": "page[cursor]",
"in": "query",
"description": "For more information please visit https://developers.klaviyo.com/en/v2026-07-15/reference/api-overview#pagination",
"required": false,
"schema": {
"type": "string"
}
},
{
"name": "page[size]",
"in": "query",
"description": "Default: 100. Min: 1. Max: 100.",
"required": false,
"schema": {
"type": "integer",
"default": 100,
"maximum": 100,
"minimum": 1
}
},
{
"name": "sort",
"in": "query",
"description": "For more information please visit https://developers.klaviyo.com/en/v2026-07-15/reference/api-overview#sorting",
"schema": {
"type": "string",
"enum": [
"created",
"-created"
]
}
},
{
"name": "revision",
"in": "header",
"description": "API endpoint revision (format: YYYY-MM-DD[.suffix])",
"required": true,
"schema": {
"type": "string",
"default": "2026-07-15"
}
}
],
"responses": {
"200": {
"description": "Success",
"content": {
"application/vnd.api+json": {
"schema": {
"$ref": "#/components/schemas/GetCatalogCategoryResponseCollection"
}
}
}
},
"4XX": {
"$ref": "#/components/responses/ClientError"
},
"5XX": {
"$ref": "#/components/responses/ServerError"
}
},
"tags": [
"Catalogs"
],
"x-klaviyo-filters": {
"ids": {
"operators": {
"list": [
"any"
]
},
"value": {
"type": "string"
}
},
"item.id": {
"operators": {
"single": [
"equals"
]
},
"value": {
"type": "string"
}
},
"name": {
"operators": {
"single": [
"contains"
]
},
"value": {
"type": "string"
}
}
},
"x-klaviyo-operation-aliases": [
"get_catalog_item_categories"
],
"x-klaviyo-pre-release": "None",
"x-klaviyo-ratelimit": {
"burst": "350/s",
"steady": "3500/m"
},
"x-klaviyo-scopes": [
"catalogs:read"
],
"x-klaviyo-subtag": "Categories"
}
}
},
"components": {
"responses": {
"ClientError": {
"description": "Client Error",
"content": {
"application/vnd.api+json": {
"schema": {
"type": "object",
"properties": {
"errors": {
"type": "array",
"items": {
"type": "object",
"required": [
"id",
"code",
"title",
"detail"
],
"properties": {
"id": {
"type": "string"
},
"code": {
"type": "string"
},
"title": {
"type": "string"
},
"detail": {
"type": "string"
},
"source": {
"type": "object",
"properties": {
"pointer": {
"type": "string"
},
"parameter": {
"type": "string"
}
}
}
}
}
}
},
"required": [
"errors"
]
}
}
}
},
"ServerError": {
"description": "Server Error",
"content": {
"application/vnd.api+json": {
"schema": {
"type": "object",
"properties": {
"errors": {
"type": "array",
"items": {
"type": "object",
"required": [
"id",
"code",
"title",
"detail"
],
"properties": {
"id": {
"type": "string"
},
"code": {
"type": "string"
},
"title": {
"type": "string"
},
"detail": {
"type": "string"
},
"source": {
"type": "object",
"properties": {
"pointer": {
"type": "string"
},
"parameter": {
"type": "string"
}
}
}
}
}
}
},
"required": [
"errors"
]
}
}
}
}
},
"schemas": {
"AgentHints": {
"description": "Optional hints emitted by the API for agent callers",
"type": "object",
"properties": {
"next_steps": {
"description": "Suggested follow-up actions for agents to take after this response",
"type": "array",
"items": {
"type": "string"
}
}
}
},
"CatalogCategoryEnum": {
"type": "string",
"enum": [
"catalog-category"
]
},
"CatalogCategoryResponseObjectResource": {
"type": "object",
"properties": {
"type": {
"$ref": "#/components/schemas/CatalogCategoryEnum"
},
"id": {
"description": "The catalog category ID is a compound ID (string), with format: `{integration}:::{catalog}:::{external_id}`. Currently, the only supported integration type is `$custom`, and the only supported catalog is `$default`.",
"type": "string",
"example": "$custom:::$default:::SAMPLE-DATA-CATEGORY-APPAREL"
},
"attributes": {
"type": "object",
"properties": {
"external_id": {
"description": "The ID of the catalog category in an external system.",
"type": "string",
"example": "SAMPLE-DATA-CATEGORY-APPAREL",
"nullable": true
},
"name": {
"description": "The name of the catalog category.",
"type": "string",
"example": "Sample Data Category Apparel",
"nullable": true
},
"updated": {
"description": "Date and time when the catalog category was last updated, in ISO 8601 format (YYYY-MM-DDTHH:MM:SS.mmmmmm).",
"type": "string",
"format": "date-time",
"example": "2022-11-08T00:00:00+00:00",
"nullable": true
}
}
},
"relationships": {
"type": "object",
"properties": {
"items": {
"type": "object",
"properties": {
"data": {
"type": "array",
"items": {
"type": "object",
"required": [
"type",
"id"
],
"properties": {
"type": {
"$ref": "#/components/schemas/CatalogItemEnum"
},
"id": {
"type": "string"
}
}
}
},
"links": {
"$ref": "#/components/schemas/RelationshipLinks"
}
}
}
}
},
"links": {
"$ref": "#/components/schemas/ObjectLinks"
}
},
"required": [
"type",
"id",
"attributes",
"links"
]
},
"CatalogItemEnum": {
"type": "string",
"enum": [
"catalog-item"
]
},
"CollectionLinks": {
"type": "object",
"properties": {
"self": {
"type": "string",
"format": "uri"
},
"prev": {
"type": "string",
"format": "uri"
},
"next": {
"type": "string",
"format": "uri"
}
},
"required": [
"self"
]
},
"GetCatalogCategoryResponseCollection": {
"type": "object",
"properties": {
"data": {
"type": "array",
"items": {
"$ref": "#/components/schemas/CatalogCategoryResponseObjectResource"
}
},
"links": {
"$ref": "#/components/schemas/CollectionLinks"
},
"meta": {
"$ref": "#/components/schemas/ResponseMeta"
}
},
"required": [
"data"
]
},
"ObjectLinks": {
"type": "object",
"properties": {
"self": {
"type": "string",
"format": "uri"
}
},
"required": [
"self"
]
},
"RelationshipLinks": {
"type": "object",
"properties": {
"self": {
"type": "string",
"format": "uri"
},
"related": {
"type": "string",
"format": "uri"
}
},
"required": [
"self",
"related"
]
},
"ResponseMeta": {
"description": "Response-level metadata",
"type": "object",
"properties": {
"agent_hints": {
"$ref": "#/components/schemas/AgentHints"
}
}
}
},
"securitySchemes": {
"Klaviyo-API-Key": {
"type": "apiKey",
"in": "header",
"name": "Authorization",
"description": "Private key authentication for /api/ endpoints is performed by setting the `Authorization` header to `Klaviyo-API-Key your-private-api-key`
For more information please visit https://developers.klaviyo.com/en/v2026-07-15/reference/api-overview#authentication",
"x-default": "Klaviyo-API-Key your-private-api-key"
}
}
},
"tags": [
{
"name": "Catalogs",
"description": "catalogs"
}
]
}