This is an example of using the GraphQL endpoint by @marchingsquare. This example gets data for John Karel address and finds objkts with certain tags (loose match with 'like'). Try copy/pasting this example into this editor: https://api.hicdex.com/graphiql/

graphql_hen_example

query collectorGallery($address: String = "tz1gqaKjfQBhUMCE6LhbkpuittRiWv5Z6w38") {
  hic_et_nunc_token(where: {trades: {buyer: {address: {_eq: $address}}}, _and: {token_tags: {tag: {tag: {_like: "jjjjjjjjjjohn"}}, _or: {token: {token_tags: {tag: {tag: {_like: "window"}}}}}}}}, order_by: {id: asc}) {
    id
    artifact_uri
    thumbnail_uri
    timestamp
    mime
    title
    description
    supply
    token_tags {
      tag {
        tag
      }
    }
  }
}