# Wei model The tokens associated with Spaces on Spacy utilize Wei as their fundamental unit of measurement. Wei is the smallest possible quantity of a Space, akin to how most cryptocurrencies use subdivisions to enable precise transactions. This unit system allows Spacy users to trade in decimal fractions of a Space, enabling transactions of very small amounts and providing greater flexibility in trading. --- # 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://spacy.gitbook.io/spacy/financial-platform/spaces/wei-model.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.