I created an API that returns a list of items containing a specified IIIF manifest in Cultural Japan.

The API documentation is available at the following link.

https://petstore.swagger.io/?url=https://api.cultural.jp/v3/api-docs

Here is an example request.

https://api.cultural.jp/v3/items/urls?manifest=https://iiif.harvardartmuseums.org/manifests/object/215190

For the API development, I used express-openapi and deployed it using AWS Lambda, referencing the following article.

https://www.forcia.com/blog/002471.html

I hope this serves as a useful reference for utilizing Cultural Japan.