METAMAST: Confirm the button that will be grayed on metamask when you try to interact with a uniswap contract
As a developer that builds applications in the Ethereum blockchain, it is important that all interactions, including those with external contracts, are smooth and seamless. However, users were reported by users, especially if they try to carry out uniswap swaps with metamask. In this article we will deal with the cause of the problem and provide a solution.
The problem:
When trying to interact with a METAMASK with a uniswap contract, users often encounter a gray-out confirmation button. This problem arises as to how Metamask interacts with external contracts in the Ethereum network.
Why is the metamask button “confirmation” grayed out?
On closer inspection, it becomes clear that the interaction of Metamask with uniswap contracts depends heavily on the functions “ETH_REQUEST” and “ETH_SENDTRANSAction”. However, these functions are not properly configured in the interaction with external contracts.
The solution:
To fix this problem, we have to update the configuration settings of Metamask to ensure proper interaction with uniswap contracts.
- Update the Metamask configuration: Go to the [Metamask website] ( and navigate to
Settings>Advanced settings'. Scroll down the "Wallet" section and click on the "Advanced options" tab.
- Activate the external requirements Functionality: Activate the Toggle -Switch "External Request Functionality" in the "Extended options" tab. In this way, Metamask can request external functions, including those from external contracts such as uniswap.
Additional steps:
To confirm that your changes work as expected, follow these steps:
- Check the Uniswap contract interaction:
Start the Metamask -App and try to interact with a uniswap contract withETH_REQUEST
or 'ETH_SENDTRANSAction. If you encounter mistakes, this can show problems with your configuration.
- Test the local development environment: If you develop locally, make sure that your Ethereum network is set up correctly and the uniswap contract has been provided in the network.
By executing these steps, users should be able to fix the problem of gray-out confirmation button in the interaction with uniswap contracts using Metamask.
