We are a collective of developers working on the main marketplaces on Nostr, including nostr:npub15dc33fyg3cpd9r58vlqge2hh8dy6hkkrjxkhluv2xpyfreqkmsesesyv6e, nostr:npub1nkmta4dmsa7pj25762qxa6yqxvrhzn7ug0gz5frp9g7p3jdscnhsu049fn, nostr:npub1market6g3zl4mxwx5ugw56hfg0f7dy7jnnw8t380788mvdyrnwuqgep7hd, and nostr:npub1nkfqwlz7xkhhdaa3ekz88qqqk7a0ks7jpv9zdsv0u206swxjw9rq0g2svu. We've been working on enhancing the interoperability of our projects, and we're now presenting the specification we've developed. It is primarily based on NIP-99, which is very broad in its use cases and has become the most widely adopted NIP for implementing marketplaces. However, NIP-99 lacked conventions necessary for a standard e-commerce experience. Our ultimate goal is to benefit users by providing a more coherent experience across Nostr-based marketplaces.

https://github.com/nostr-protocol/nips/pull/1784