{
"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-variants/{id}": {
"get": {
"operationId": "get_catalog_variant",
"summary": "Get Catalog Variant",
"description": "Get a catalog item variant with the given variant ID.
*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_catalog_variant.json)",
"parameters": [
{
"name": "id",
"in": "path",
"description": "The catalog variant 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 variant 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-VARIANT-MEDIUM"
}
},
{
"name": "fields[catalog-variant]",
"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": [
"created",
"custom_metadata",
"description",
"external_id",
"id",
"image_full_url",
"image_thumbnail_url",
"images",
"inventory_policy",
"inventory_quantity",
"price",
"published",
"sku",
"title",
"updated",
"url"
]
}
},
"explode": false
},
{
"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": {
"$ref": "#/components/schemas/GetCatalogVariantResponse"
}
}
}
},
"4XX": {
"$ref": "#/components/responses/ClientError"
},
"5XX": {
"$ref": "#/components/responses/ServerError"
}
},
"tags": [
"Catalogs"
],
"x-klaviyo-pre-release": "None",
"x-klaviyo-ratelimit": {
"burst": "350/s",
"steady": "3500/m"
},
"x-klaviyo-scopes": [
"catalogs:read"
],
"x-klaviyo-subtag": "Variants"
}
}
},
"components": {
"responses": {
"ClientError": {
"description": "Client Error",
"content": {
"application/vnd.api+json": {
"schema": {
"type": "object",
"properties": {
"errors": {
"type": "array",
"items": {
"type": "object",
"required": [
"id",
"code",
"title",
"detail"
],
"properties": {
"id": {
"type": "string"
},
"code": {
"type": "string"
},
"title": {
"type": "string"
},
"detail": {
"type": "string"
},
"source": {
"type": "object",
"properties": {
"pointer": {
"type": "string"
},
"parameter": {
"type": "string"
}
}
}
}
}
}
},
"required": [
"errors"
]
}
}
}
},
"ServerError": {
"description": "Server Error",
"content": {
"application/vnd.api+json": {
"schema": {
"type": "object",
"properties": {
"errors": {
"type": "array",
"items": {
"type": "object",
"required": [
"id",
"code",
"title",
"detail"
],
"properties": {
"id": {
"type": "string"
},
"code": {
"type": "string"
},
"title": {
"type": "string"
},
"detail": {
"type": "string"
},
"source": {
"type": "object",
"properties": {
"pointer": {
"type": "string"
},
"parameter": {
"type": "string"
}
}
}
}
}
}
},
"required": [
"errors"
]
}
}
}
}
},
"schemas": {
"CatalogItemEnum": {
"type": "string",
"enum": [
"catalog-item"
]
},
"CatalogVariantEnum": {
"type": "string",
"enum": [
"catalog-variant"
]
},
"CatalogVariantResponseObjectResource": {
"type": "object",
"properties": {
"type": {
"$ref": "#/components/schemas/CatalogVariantEnum"
},
"id": {
"description": "The catalog variant 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-VARIANT-MEDIUM"
},
"attributes": {
"type": "object",
"properties": {
"external_id": {
"description": "The ID of the catalog item variant in an external system.",
"type": "string",
"example": "SAMPLE-DATA-ITEM-1-VARIANT-MEDIUM",
"nullable": true
},
"title": {
"description": "The title of the catalog item variant.",
"type": "string",
"example": "Ocean Blue Shirt (Sample) Variant Medium",
"nullable": true
},
"description": {
"description": "A description of the catalog item variant.",
"type": "string",
"example": "Ocean blue cotton shirt with a narrow collar and buttons down the front and long sleeves. Comfortable fit and titled kaleidoscope patterns.",
"nullable": true
},
"sku": {
"description": "The SKU of the catalog item variant.",
"type": "string",
"example": "OBS-MD",
"nullable": true
},
"inventory_policy": {
"description": "This field controls the visibility of this catalog item variant in product feeds/blocks. This field supports the following values:\n`1`: a product will not appear in dynamic product recommendation feeds and blocks if it is out of stock.\n`0` or `2`: a product can appear in dynamic product recommendation feeds and blocks regardless of inventory quantity.",
"type": "integer",
"example": 2,
"enum": [
0,
1,
2
],
"nullable": true
},
"inventory_quantity": {
"description": "The quantity of the catalog item variant currently in stock.",
"type": "number",
"example": 25,
"nullable": true
},
"price": {
"description": "This field can be used to set the price on the catalog item variant, which is what gets displayed for the item variant when included in emails. For most price-update use cases, you will also want to update the `price` on any parent items using the [Update Catalog Item Endpoint](https://developers.klaviyo.com/en/reference/update_catalog_item).",
"type": "number",
"example": 42,
"nullable": true
},
"url": {
"description": "URL pointing to the location of the catalog item variant on your website.",
"type": "string",
"example": "https://via.placeholder.com/150",
"nullable": true
},
"image_full_url": {
"description": "URL pointing to the location of a full image of the catalog item variant.",
"type": "string",
"example": "https://via.placeholder.com/300",
"nullable": true
},
"image_thumbnail_url": {
"description": "URL pointing to the location of an image thumbnail of the catalog item variant.",
"type": "string",
"example": "https://via.placeholder.com/150",
"nullable": true
},
"images": {
"description": "List of URLs pointing to the locations of images of the catalog item variant.",
"type": "array",
"items": {
"type": "string"
},
"example": [
"https://via.placeholder.com/150"
],
"nullable": true
},
"custom_metadata": {
"description": "Flat JSON blob to provide custom metadata about the catalog item variant. May not exceed 100kb.",
"type": "object",
"example": {
"Top Pick": true
},
"nullable": true
},
"published": {
"description": "Boolean value indicating whether the catalog item variant is published.",
"type": "boolean",
"example": true,
"nullable": true
},
"created": {
"description": "Date and time when the catalog item variant was created, 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
},
"updated": {
"description": "Date and time when the catalog item variant 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": {
"item": {
"type": "object",
"properties": {
"data": {
"type": "object",
"properties": {
"type": {
"$ref": "#/components/schemas/CatalogItemEnum"
},
"id": {
"type": "string"
}
},
"required": [
"type",
"id"
]
},
"links": {
"$ref": "#/components/schemas/RelationshipLinks"
}
}
}
}
},
"links": {
"$ref": "#/components/schemas/ObjectLinks"
}
},
"required": [
"type",
"id",
"attributes",
"links"
]
},
"GetCatalogVariantResponse": {
"type": "object",
"properties": {
"data": {
"$ref": "#/components/schemas/CatalogVariantResponseObjectResource"
},
"links": {
"$ref": "#/components/schemas/ObjectLinks"
}
},
"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"
]
}
},
"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"
}
]
}