Costco Reviews Summary API returns the average rating, the number of reviews per star, the recommendation counts and the dates of the first and last review. A product without reviews returns zero counts and is free. The counts cover all ratings of the product, also ratings without text. Costs 1 credit per successful request.
Run this endpoint
Endpoint
Parameters
Start with the required fields, then add optional filters only when your use case needs them.
Runnable path
1 required parameter needed before sending a request.
1 optional filter available.
string
Required
Product id from search, 4 to 12 digits.
1234567890
string
Optional
us (default) or ca. Use ca for product ids from costco.ca.
US
Response Schema
Example response fields are illustrative; inspect the JSON before integrating.
Example response fields
Scan these fields before integrating.
data
meta
success
{
"data": {
"country": "us",
"product_id": "4000203457",
"photo_count": 22,
"recommended": 91,
"total_reviews": 245,
"average_rating": 4.077551020408163,
"last_review_at": "2026-10-24T16:04:47.000+00:00",
"first_review_at": "2023-10-08T23:41:37.000+00:00",
"not_recommended": 54,
"rating_distribution": {
"1": 32,
"2": 16,
"3": 12,
"4": 26,
"5": 159
}
},
"meta": {
"credits": 1,
"billable": true,
"endpoint_family": "reviews_summary"
},
"success": true
}Errors
Handle these documented responses before retrying or showing customer-facing failures.
Validation Error
A required parameter or a value is invalid. This response is not billable.
{
"errors": {
"query": [
"A search text is required, e.g. laptop."
]
},
"message": "The request validation failed"
}Not Found
The product, item or warehouse does not exist. This response is not billable.
{
"meta": {
"billable": false,
"retryable": false,
"endpoint_family": "reviews_summary"
},
"error": {
"code": "NOT_FOUND",
"message": "The requested resource was not found."
},
"success": false
}Upstream Unavailable
Costco could not be reached after several tries. This response is not billable. Retry shortly.
{
"meta": {
"billable": false,
"retryable": true,
"endpoint_family": "reviews_summary"
},
"error": {
"code": "UPSTREAM_UNAVAILABLE",
"message": "Costco could not be reached. Please retry shortly."
},
"success": false
}Generate Code with AI
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