MetaFX [Meta Fox] Token

Reentrancy in MetaFox._transfer(address,address,uint256) (#273-331):
External calls:
- swapTokensForEth(contractTokenBalance) (#301)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#338-344)
External calls sending eth:
- sendETHToFee(address(this).balance) (#304)
- _marketingAddress.transfer(amount) (#348)
State variables written after the call(s):
- _tokenTransfer(from,to,amount,takeFee) (#330)
- _rOwned[address(this)] = _rOwned[address(this)].add(rTeam) (#385)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#375)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#376)
- _tokenTransfer(from,to,amount,takeFee) (#330)
- _rTotal = _rTotal.sub(rFee) (#389)
Apply the check-effects-interactions pattern.

Additional information: link

Unable to find manual contract audit (e.g. Certik, PeckShield, Solidity...)

MetaFox._approve(address,address,uint256).owner (#266) shadows:
- Ownable.owner() (#46-48) (function)
Rename the local variables that shadow another component.

Additional information: link

MetaFox.setMaxWalletSize(uint256) (#459-461) should emit an event for:
- _maxWalletSize = maxWalletSize (#460)
Emit an event for critical parameter changes.

Additional information: link

Reentrancy in MetaFox.transferFrom(address,address,uint256) (#229-240):
External calls:
- _transfer(sender,recipient,amount) (#230)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#338-344)
External calls sending eth:
- _transfer(sender,recipient,amount) (#230)
- _marketingAddress.transfer(amount) (#348)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#231-238)
- _allowances[owner][spender] = amount (#269)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in MetaFox.transferFrom(address,address,uint256) (#229-240):
External calls:
- _transfer(sender,recipient,amount) (#230)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#338-344)
External calls sending eth:
- _transfer(sender,recipient,amount) (#230)
- _marketingAddress.transfer(amount) (#348)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#270)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#231-238)
Apply the check-effects-interactions pattern.

Additional information: link

MetaFox._previoustaxFee (#152) is set pre-construction with a non-constant function or state variable:
- _taxFee
Remove any initialization of state variables via non-constant state variables or function calls. If variables must be set upon contract deployment, locate initialization in the constructor instead.

Additional information: link

solc-0.8.9 is not recommended for deployment
Deploy with any of the following Solidity versions: 0.5.16 - 0.5.17, 0.6.11 - 0.6.12, 0.7.5 - 0.7.6 Use a simple pragma version that allows any of these versions. Consider using the latest version of Solidity for testing.

Additional information: link

Variable MetaFox._swapTokensAtAmount (#168) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Reentrancy in MetaFox.transferFrom(address,address,uint256) (#229-240):
External calls:
- _transfer(sender,recipient,amount) (#230)
- _marketingAddress.transfer(amount) (#348)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#231-238)
- _allowances[owner][spender] = amount (#269)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#270)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#231-238)
Apply the check-effects-interactions pattern.

Additional information: link

Variable MetaFox._transferStandard(address,address,uint256).rTransferAmount (#374) is too similar to MetaFox._getValues(uint256).tTransferAmount (#396)
Prevent variables from having similar names.

Additional information: link

MetaFox.slitherConstructorConstantVariables() (#122-468) uses literals with too many digits:
- _tTotal = 1000000000000 * 10 ** 9 (#135)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

MetaFox.cooldown (#155) is never used in MetaFox (#122-468)
Remove unused state variables.

Additional information: link

Ownable._previousOwner (#34) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

allowPreTrading(address,bool) should be declared external:
- MetaFox.allowPreTrading(address,bool) (#463-466)
Use the external attribute for functions never called from the contract.

Additional information: link

Average PancakeSwap trading volume, liqudity, number of swaps are extremely low. Token seems to be dead.

Number of Binance Smart Chain (BSC) token holders is low.

Token is deployed only at one blockchain

Token has only one trading pair

Unable to find PancakeSwap trading pair to compute liquidity.

Unable to find PancakeSwap trading pair to compute volume.

Unable to find PancakeSwap trading pair to compute number of swaps.

Unable to find website, listings and other project-related information

Young tokens have high risks of price dump / death

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank