> For the complete documentation index, see [llms.txt](https://plus-skill.gitbook.io/plus-skill-whitepaper/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://plus-skill.gitbook.io/plus-skill-whitepaper/elementary/nfts/nft-character-level.md). # NFT character level To have more benefits while learning users might need to upgrade their level to a higher level to be able to earn more tokens. * to upgrade each level requires credit and PPT token. * to be able to have credit in order to upgrade to the next level, you need to try to learn and do the quiz correctly. Credit is a component of your reward once you've done your quiz, your reward will come with credit and token. * If a learner makes a mistake during doing the quiz, there will be a penalty to decrease the credit. * if a learner cannot earn enough credit to make it to the next level, the learner might need to use their token to extend the credit. Therefore in order to earn more tokens, Learners have to try to learn and do the quiz correctly to avoid losing their credit. --- # 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://plus-skill.gitbook.io/plus-skill-whitepaper/elementary/nfts/nft-character-level.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.