skip-mev / skipper Goto Github PK

Example MEV searching bot for the Cosmos ecosystem, using Skip.

Python 4.26% Dockerfile 0.03% Shell 0.28% Jupyter Notebook 0.14% Go 2.31% Makefile 0.08% Nix 0.01% Solidity 59.30% JavaScript 28.54% Ruby 0.99% TypeScript 4.06%

skipper's Introduction

Skipper

Example MEV searching bots for the Cosmos ecosystem, using Skip.

Overview

This repository contains example MEV bots that search for and executes on profitable MEV opportunities throughout the Interchain, starting with Juno, Terra, and Evmos.

If you're new to MEV or searching, use this repo as an educational tool to help you learn the what and how of searching.
If you're already an experienced searcher, use this repo as an example on how to easily sign and send bundles to Skip on our supported chains.

For more searcher documentation, please see: https://docs.skip.money/searcher-docs

For an overview of the Block SDK, please see: https://docs.skip.money/chains/overview

About our bots

There are two bots in the skipper repo, skipper-py and skipper-go:

skipper-py: A Python-based bot for CosmWasm-based Cosmos chains that captures cyclic arbitrage opportunities across all major DEXs on Juno and Terra by backrunning transactions that trade against particular pools. You can read more about JUNO, Loop DEX, and JunoSwap in our state of JUNO MEV report

skipper-go: A Golang-based bot for EVM-based Cosmos chains that captures cyclic arbitrage opportunities across all major DEXs on Evmos (Diffusion, EvmoSwap, Cronus) by backrunning transactions that trade against particular pools. Execution is carried out by an on-chain smart contract written in Solidity (also included in the repo for your own deployment / learning purposes).

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skipper's Issues

Protocol fees calculated into input reserves update

Swap fees are sum of LP fee and protocol fee. The protocol fee part is sent to a protocol address and is not absorbed into LP.

Therefore the amount which is added to the reserves after swap should not contain the protocol fee. https://github.com/skip-mev/bots/blob/main/juno-arb/calculate.py#L31

(In case of junoswap pass_through_swap is the protocol fee for the first swap sent back to the user, the second swap goes to the junoswap)

its can working on eth or bsc?

Nice script, but its can working fine on bsc or eth network?

What ist the AUCTION_BID_MINIMUM value?

What does AUCTION_BID_MINIMUM = 600 in the env file and are these 600 Coins or 600 uCoins?

Bundle codes on skipper-go

Hi! I can't figure out what the problem is. Please help me understand

Arbitrage opportunity found:
WEVMOS (0xD4949664cD82660AaE99bEdc034a0deA8A0bd517) to ceUSDC (0xe46910336479F254723710D57e7b683F3315b22B) on Diffusion / ceUSDC (0xe46910336479F254723710D57e7b683F3315b22B) to ceWETH (0x153A59d48AcEAbedbDCf7a13F67Ae52b434B810B) on cronus / ceWETH (0x153A59d48AcEAbedbDCf7a13F67Ae52b434B810B) to WEVMOS (0xD4949664cD82660AaE99bEdc034a0deA8A0bd517) on Diffusion
Amount In: 2.539842328606928182 WEVMOS
Amount Out: 2.662634960096658249 WEVMOS
Profit: 0.122792631489730067 WEVMOS
Bid: 61396315744865033
Bundle Status Code: 5
&{0 5 3 12335932 BUNDLE REJECTED (failed CheckTx): responses... [code:3 log:"invalid nonce; got 24039, expected 24040: invalid sequence" gas_wanted:3000000 codespace:"sdk" code:3 log:"invalid nonce; got 3, expected 4: invalid sequence" gas_wanted:400000 codespace:"sdk" code:4 log:"signature verification failed; please verify account number (19428303) and chain-id (evmos_9001-2): unauthorized" gas_wanted:5000000 gas_used:88317 codespace:"sdk" ] [map[code:3 codespace:sdk data: events:[] gas_used:0 gas_wanted:3000000 info: log:invalid nonce; got 24039, expected 24040: invalid sequence mempoolError: priority:0 sender:] map[code:3 codespace:sdk data: events:[] gas_used:0 gas_wanted:400000 info: log:invalid nonce; got 3, expected 4: invalid sequence mempoolError: priority:0 sender:] map[code:4 codespace:sdk data: events:[] gas_used:88317 gas_wanted:5000000 info: log:signature verification failed; please verify account number (19428303) and chain-id (evmos_9001-2): unauthorized mempoolError: priority:0 sender:] map[code:0 codespace: data: events:[] gas_used:0 gas_wanted:0 info: log: mempoolError: priority:0 sender:]] false [3e5dd57dca8c2dbd235e64720019b644dd67ec89bcf48464d3562795e8caef86 6e248d5e924abea6af807a59e882fb56e1c4764d40af5a60a573e63aad5c77ce 1024e9cf383ef66d36e7bbe2f892c050488d17acc498c644399d23028634e40c] false}
Target TX: https://escan.live/tx/0xce1ce76c75637960aafa39ec390064f99c03e77f9fc201b2f39f43f056004d5c

JunoSwap migration to WYND

Here's the full scope: https://twitter.com/wynddao/status/1613146949276037126?s=20&t=0x_G6NRlQUVH4A3a5OGDbA

likely the junoswap pool files will need shifting when its done

Tx response cannot be parsed - juno(cosmpy)

The same bug as described by Shultzie fetchai/cosmpy#367

After broadcasting the tx, when the bot fetch the tx, cosmpy fails to decode the tx because of

Failed to parse tx field: Failed to parse auth_info field: Message type "cosmos.tx.v1beta1.AuthInfo" has no field named "tip" at "GetTxResponse.tx.auth_info".

This bot makes money??

This bot makes money?? I am confused.

Bot does not notify you that the searcher account is empty

Expected behaviour

The bot panics on zero balance in the searcher wallet or prints out:

Have fun staying poor!

Current behaviour

I get no money.

Throws an Valueerror while connecting to RPC endpoints

File "/home/arlene_m/skipper/skipper/venv/lib/python3.10/site-packages/anyio/_core/_sockets.py", line 186, in connect_tcp
addr_obj = ip_address(remote_host)
File "/usr/lib/python3.10/ipaddress.py", line 54, in ip_address
raise ValueError(f'{address!r} does not appear to be an IPv4 or IPv6 address')
ValueError: 'rpc-juno-ia.cosmosia.notional.ventures' does not appear to be an IPv4 or IPv6 address

I am running the bot on ArchLinux FYI. Only envs/juno.env throws this error. terra works fine