Where can I find rate model data?

[mookim-eth]

Hi, there, I'm developer of BridgeEye, and I have already intergrated your bridge for the old version (only supporting ETH, USDC from Arbitrum to Ethereum now ), code here: https://github.com/DeFiEye/BridgeEye/blob/master/crosschain/acrossto.py

Since your bridge have upgraded to support more chains (Boba and Optimism), and more tokens like WBTC, I need to also modify my code to keep update.

Could you provide a easy method for me to get rate model data, I know I can get this data from your docs page by human effort and hard-code it to my code, but I think it should be a more elegant way to achieve this.

Besides, I think I hard-coded these constants, can I fetch these latest value to avoid hard-code?

• Supported Chains
• Pool Contract
• Token config: bar, r0, r1, r2
• Gas constants like FAST_ERC_GAS , and gas discount 25%

Thanks in advance~

[daywiss]

We switched to using on chain rate models in the last couple months. We have javascript libraries i could point you to, but if you are using python this might not be helpful. Whats the best way for you to get this information? We could potentially make some restful routes to provide this info.

[mrice32]

@mookim-eth we also have an API that you can use to determine fees: https://docs.across.to/bridge/developers/sending-relays. Would that be preferable to computing the fees yourself?

[mookim-eth]

@daywiss @mrice32 Thanks, this REST api is of great help!

Could you add another API for fetching current supporting chain and tokens? So that I can iterate all possible l2Token and chainId. I found this info here: https://github.com/across-protocol/frontend-v2/blob/master/src/data/tokens.json, but i don't know is this file will be updated?

[mrice32]

@mookim-eth It's a great question. We can probably add something to the API to expose this.