Please check out our Github! Feel free to open an issue or PR if you have any questions or suggestions.
We welcome contributions via our Github. You can also check out our open bounties here: https://bounties.perp.fi/
We also have a #coding-chat channel in our Discord if you want to learn more about contributing!
Get the current addresses here:
production (Homestead/xDai): https://metadata.perp.exchange/production.json
staging (Rinkeby/xDai): https://metadata.perp.exchange/staging.json
First get the smart contract addresses from the link above.
For Ethereum (layer1), get the ABIs on Etherscan.
For xDai (layer2), get the ABIs on Blockscout.
Example: (ClearingHouse on layer2) https://blockscout.com/poa/xdai/address/0x5d9593586b4B5edBd23E7Eba8d88FD8F09D83EBd/contracts
A subgraph has been created on The Graph by our team and we expect more will be created with further data soon.
Welcome to ask us for some xDAI in Discord #coding-chat
You can also convert DAI to xDAI at https://bridge.xdaichain.com/.
K values are stet for each AMM (ie. each perpetual market) at launch. These values shift gradually over time so the best resource for obtaining them is the perp-cli tool.
For example, call
perp amm ETH to get the
BaseAssetReserve (x and y values) for this AMM.
We have a per-block price fluctuation limit of ±1.2%. If you are outside this range, a
"price is over fluctuation limit" error is thrown.
For example, if the price in the last block is 1,000, then the price range in the next block will be 988 ~ 1012.
The value of the slippage tolerance is
position notional x (1 ± 0.5%) ( +/- depends on long or short)
fundingRate = premiumFraction / twapIndexPrice
fundingPayment = premiumFraction * positionSize