# Intro Looking to build a bespoke experience with NFTs? This the set of APIs you want! {% hint style="info" %} Email us at to get your API key! {% endhint %} Some common use cases we serve: * Free NFT claims * Rewards/loyalty programs * Games with NFTs * NFTs backed with physical items Note: We do NOT help write smart contracts! These APIs are for if you already have a smart contract and you need help claiming/transferring/distributing without wanting to pay gas. In developer speak, we help manage all the "writes" to the blockchain! Like calling a state-changing function on a smart contract. Some common reasons why people choose to use our API: * No need to manage gas fees (Winter handles this for you) * No need to manage custodial wallets * No need to manage nonces at scale * No need to build your own infrastructure (pay as you go) * Fully whitelabeled experience --- # 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://docs.usewinter.com/nft-claim-api/intro.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.