> For the complete documentation index, see [llms.txt](https://docs.vyfi.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vyfi.io/vy-finance-products/bar/serve-the-bar/liquidity-pools-principal-token.md).

# Liquidity Pools Principal Token

Every liquidity on our platform will have a Principal Token (PT) determined at the time of creation. Whenever a serve operation is conducted a serve operation is stored and will be converted to the PT of the liquidity pool, and then the serve will only send forwards the PT.\
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Which tokens will be the principal token?\
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The PT is determined by the pair that has been created. The following rules apply for PT determination:\
For all ADA/CNT pairs, ADA is the PT.\
For all VYFI/CNT pairs, VYFI is the PT.\
For all Stable/CNT pairs, the Stable-coin is the PT.  

For all CNT/CNT pairs, users creates the PT (User that creates the pool) \
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Be aware, due to our PT determination, CNT/CNT pairs can be created if and only if the PT of the pair already has an existing ADA, VYFI or Stable-linked LP. 

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