Create a playbook for whitelisting tokens

[milancermak]

Eventually, we need to have a checklist for integrating new tokens (yangs) into the system.

A surely incomplete list:

• check token's decimals - can it be easily integrated or will it break something on our side?
• is it a pure ERC20-like token? or something like ERC777 with callbacks that can pose reentrancy problems?
• assert exchange liquidity
• do we have an oracle price feed?
• does it work correctly when calling transfer with 0? we need this!
• does it return true on successful transfer? we need this!
• can the token be paused?
• Collateral Due Diligence page in Notion

For inspiration:

• Token integration guide from ToB
• The dangers of token integration from OZ

[milancermak]

Also consider reward tokens

[milancermak]

"Don’t set the maximum total deposits for a token to more than 50% of the circulating supply" src

[tserg]

Threshold should not be higher than 97% based on current implementation of Purger to ensure absorption is profitable for provider to the Absorber after deducting the compensation to the caller of the absorption. src

[milancermak]

More research in this notion page

[milancermak]

Non standard tokens

Weird tokens