> For the complete documentation index, see [llms.txt](https://docs.thehemera.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.thehemera.com/hemera-indexer/use-cases/opensea.md). # OpenSea OpenSea is a decentralized marketplace for buying, selling, and trading non-fungible tokens (NFTs). It allows users to interact with a wide variety of digital assets, including artwork, collectibles, virtual land, and in-game items, all of which are secured on the blockchain, primarily Ethereum. OpenSea is one of the largest and most popular NFT platforms, offering tools for creators to mint and sell their NFTs and for collectors to discover and trade unique digital items. Currently, it only supports the Seaport protocol, with plans to gradually update and expand support in the future. **Key Features:** * NFT trading volume * NFT trading collections * NFT trading buy volume * NFT trading sell volume --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.thehemera.com/hemera-indexer/use-cases/opensea.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.