# Castle Market - [How do I buy an NFT Castle?](https://castle-support.pocketarena.com/castle-market/how-do-i-buy-an-nft-castle.md) - [How do I begin investing as a sponsor?](https://castle-support.pocketarena.com/castle-market/how-do-i-begin-investing-as-a-sponsor.md) - [How do I hire a player to upgrade an NFT Castle?](https://castle-support.pocketarena.com/castle-market/how-do-i-hire-a-player-to-upgrade-an-nft-castle.md) - [Auto accept for NFT Castles](https://castle-support.pocketarena.com/castle-market/auto-accept-for-nft-castles.md) - [I have my own Castle. How can I hire myself?](https://castle-support.pocketarena.com/castle-market/i-have-my-own-castle.-how-can-i-hire-myself.md) - [How do I sell an NFT Castle?](https://castle-support.pocketarena.com/castle-market/how-do-i-sell-an-nft-castle.md) - [I am a Castle sponsor. How can I contact my player?](https://castle-support.pocketarena.com/castle-market/i-am-a-castle-sponsor.-how-can-i-contact-my-player.md) - [Castle Items](https://castle-support.pocketarena.com/castle-market/castle-items.md) - [How do I upgrade my Castle items?](https://castle-support.pocketarena.com/castle-market/how-do-i-upgrade-my-castle-items.md) --- # Agent Instructions: 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: ``` GET https://castle-support.pocketarena.com/castle-market.md?ask= ``` The question should be specific, self-contained, and written in natural language. 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.