Questions tagged [metamask]

Question about the Metamask chrome's plugin.

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Metamask and Ether.js API

I am trying to use the ether.js API with Metamask (with Ganache GUI i.e. localhost 7545) via the Chrome console. I am getting an error saying that ethers is not defined. > let currentProvider = ...
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1answer
130 views

Metamask (Chrome extension) web3.js console: ETH transaction issue (synchronous methods) + web3.version

I am playing around with Metamask and the web3.js API using the Google Chrome console. However, I have two issues: 1) I am trying to send a simple transaction using Ganache GUI (localhost 7545) and I ...
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1answer
234 views

How Can You Find the Ethereum Provider on Web3 Browsers Other Than MetaMask?

MetaMask provides the following way currently to find a provider for their upcoming 2020 breaking change: // Running on the page, in the browser // This API will go live in Q1 2020 // It will be the ...
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1answer
58 views

Can I retrieve data from smart contract to my local webpage without using metamask?

I am creating a DApp where I want to show the public variable's information from the contract. I want my users who don't have metamask to see this information also. Is there a way I can do that? If ...
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2answers
146 views

Reinstalled MetaMask, account lost?

I had 3 accounts under my MetaMask Chrome extension. One of them had some small deposit. I have reinstalled the extension and used seed phrase to get access again. However, I can see only one account (...
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1answer
203 views

MetaMask verification screen doesn't show amount or token when I use 'approveAndCall' to transfer tokens to a contract

When I use 'approveAndCall' to transfer tokens to a contract, the MetaMask verification screen doesn't show the amount, or the token name. let contract = new web3.eth.Contract(gsERC20abi, '...
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1answer
26 views

Any issues for web3 on digital ocean?

My dapp which is currently testing on ropsten works perfectly when i run the frontend from local but dosent return addresses when i run on a digital ocean server. it is successfully connected to ...
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1answer
46 views

private key vs seed

I made an extra account in Metamask for my GF, I kept Account 1 for myself and I gave only the private key of Account 2 to my GF. I kept the seed words only to myself. Since then, she has dumped me ...
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1answer
121 views

Transfer WETH from myetherwallet to metamask wallet

I converted some of my ETH to WETH already, on my hardware wallet. H/w wallet was conected to myetherwallet, and I can see my WETH there under tokens panel. I also created a metamask wallet and I am ...
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1answer
39 views

How to guarantee the order of transactions in MetaMask?

I create my transactions with ethers.js and push them into an array like this: const promises = []; promises.push(createTokenApprovalTx()); promises.push(createFooTx()); It's important that the ...
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msg.sender is different from chosen account in Metamask when checking from constructor

I am trying to do a comparison of msg.sender and another address inside a contract constructor. The problem is that in the constructor, msg.sender is a different address from the one I chose in ...
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1answer
100 views

How to check if BIP39 seed phrase is valid?

I am producing a game for a hackaton community to expose more people to Ethereum and blockchain. After hacking something my hackers will get many different seed phrases (similar to one generated by ...
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114 views

Help me fix Error: No “from” address specified in neither the given options, nor the default options. I'm use MetaMask

file web3.js import Web3 from 'web3'; const web3 = new Web3(window.web3.currentProvider); export default web3; file image.js import web3 from './web3'; const address = '...
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1answer
177 views

RPC error when interacting with contract using Ganache GUI, but it works fine when using Ganache CLI

I have a truffle project, if I migrate it onto ganache-cli and then interact with my contract (via Metamask) it works great. But if I try and do the exact same thing using ganahe-gui the contract ...
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1answer
46 views

Deploy smart contract on Ropsten, Kovan

When I deploy my truffle smart contract on test networks like Ropsten and Kovan, can I interact with it using multiple PCs at once simultaneously? And will the data updated from one PC be visible on ...
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28 views

How to recieve notification of incoming transaction in metamask mobile in real time

I have a erc-20 token in the ropsten testnet and i am using my metamask for admin my token, and i just want to recieve a notification via sms, to take screenshot, whatsapp or another way frendly user, ...
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1answer
344 views

Error while buying test ether from https://faucet.metamask.io/ - Mastering Ethereum

I am using Ethereum wallet MetaMask chrome extension and I am connected to Ropsten test network. I am following the instructions from the book Mastering Ethereum: Building Smart Contracts and DApps ...
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30 views

DAPP Send Button should show ENS in Metamask

My DAPP has a "Buy" Button. On clicking this button, after some checks, Metamask (if that is the wallet that the user is using) will open up and show a transaction of sending XX ETH from his wallet to ...
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1answer
627 views

MetaMask - RPC Error: Error: [ethjs-rpc] rpc error with payload

I have created a DApp. In all my functions where I have used send() function of web3, I am facing above error. I have a function in which I used call() and it worked fine but all send() using ...
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1answer
93 views

Total metamask balance

I am curious how to get the total current balance of my metamask wallet with as many "accounts" inside it as it bears in the moment? As I can understand metamask is the HD wallet and all my addresses ...
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53 views

How can MetaMask alert about transaction errors before they are caused?

The MetaMask extension has this feature to warn about transaction errors before a transaction is being made: ALERT: Transaction Error. Exception thrown in contract code. How is this done? A dry ...
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1answer
58 views

hdwallet-provider set multiple account addresses when deploy contract

I'm using for deploying contracts hdwallet-provider, but I have issue on client side to get multiple accounts using web3.eth.getAccounts() call. I know this is like duplicate question and truffle ...
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1answer
35 views

Transaction values exchanged even if transaction rejected, and double values exchanged if transaction confirmed

I'm trying to perform a function that exchanges one token for another, but I'm getting a very strange bug. If I call the function in web3, I get the standard metamask popup asking whether to confirm ...
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1answer
202 views

Pass arrays to solidity's function from truffle

I am getting ALERT: Transaction Error. Exception thrown in contract code in metamask when calling addBet function from truffle. The function works without any errors when called from remix. The ...
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1answer
411 views

Sending an ethereum transaction with ethers.js and metamask

I've tried two different ways, and have looked through ethers.js documentation, and I just haven't been able to figure it out. Does anyone have any suggestions? This is in a browser. trans(web3,...
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1answer
12 views

smart contract issue [duplicate]

hi I accidentally sent it eth to a eth smart contract from my exodus wallet instead of sending it to my metal mask and sending it from there is there any way to retrieve and withdraw this money back ...
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1answer
112 views

How to execute contract methods without metamask confirmations?

I would like to know if there is a way to execute my contract methods without requiring the confirmation of metamask. I found something web3.eth.sendSignedTransaction but can't seem to figure out ...
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3answers
48 views

safe way to allow users to deposit ETH to an address

I'm new to this and I want to simply allow users to deposit ETH to an address (not a contract). I was wondering what is a safe way to do this? for example using the code below on client side i can ...
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1answer
94 views

Metamask TestRPC shows 0 Ether while connecting to Ganache- CLI

I've gone through various Q/A(s) of the problem of ganache-cli and metamask not linking but after trying all the solutions, still doesn't work for me. As soon as I type ganache-cli in windows cmd ...
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1answer
75 views

How to choose wallet with web3

I have MEW and Metamask installed. When I am trying to send a transaction using: web3.eth.sendTransaction() It always uses Metamask. May I know how can I specify I want to use MEW instead?
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1answer
132 views

Using Metamask with Ropsten and Web3.py

I have used Ganache to compile and deploy my contract successfully. Now I would like to do the same on the Ropsten network using my Metamask account. I don't want the Metamask plugin to pop up every ...
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1answer
162 views

In MetaMask, I have my seed phrase but I didn't export my private keys. How do I recover my wallet?

So, I've been using MetaMask to try app.compound.finance and everything went well. I've deposited a small sum and connected the app to the wallet. But a few weeks later I decided to deleted the chrome ...
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2answers
85 views

Not able to successfully send Transactions via MetaMask on Firefox Browser

Does anybody help me figuring out why I am getting failed transaction here?What does this error means? Few days back,with the same line of code,I was able to successfully send transactions. An update:...
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33 views

Trying to send ERC20 token with Javascript button without success

I am trying to send an ERC20 token with the following code via web3.js. It was working until a week ago and then it stopped. Am I doing something wrong? Upon clicking it no longer interacts with ...
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1answer
59 views

How can a smart contract payable based function returns value against any purchase

I am trying to get a return value from the payable function, the idea is a user must pay the fees and in return, he will get his special code. My JS test code is as follow it('get special code ...
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1answer
25 views

How can I change the text message on connection request window of metamask?

I want to change the message in connection request window using web3js. I have attached screenshot here. kindly check it.
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249 views

How to connect Remix desktop to connect to MetaMask?

I downloaded the desktop version of Remix, and am trying to connect it to the main network. I can do this in the web version of Remix easily, opening up MetaMask on my browser. However, in the desktop ...
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33 views

JSON RPC error on Angular Truffle Box

I use angular-truffle-box to create a dapp and when i tried to create a method getAge() and deploy the contract it shows me this error: Error: Returned error: {"id":12,"jsonrpc":"2.0","error":{"code":...
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1answer
21 views

Altcoin transfers

I sent a number of ERC20 tokens to Metamask. They are not showing in the MM wallet, but I do see them in Etherscan. I now want to sent them to a different address but I don't see how to do that. When ...
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1answer
46 views

how can i count how many buyers made request to my smart contract and get earnedEther [closed]

I am using a factory contract for selling and buying goods. how can retrieve how many buyers bought and calculate how much ether earned by selling goods? here is my source code. I am new on smart ...
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0answers
133 views

Issues with metamask in my project

Please look at images: The first images is what i get when logged in to metamask and the second image is what i get when not logged in to metamask When im logged in to metamask i can buy sell ...
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1answer
42 views

Metamask from web to mobile

I have use my PC to manage MetaMask (ie. chrome extend). compound.finance also connect to my metamask wallet. I want to manage my account by mobile and at PC that I install metamask mobile in andriod....
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3answers
278 views

How do I send a transaction using web3.py and Infura?

I am using Infura to interact with the Ropsten testnet. I would like to send a transaction from one account to another, but the following code does not work: w3 = Web3(Web3.HTTPProvider('InfuraUrl')) ...
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1answer
167 views

MetaMask and it's “speed up transaction feature” — no callback

I'm using MetaMask to make Ethereum transactions from my website, as described here: https://metamask.github.io/metamask-docs/Main_Concepts/Sending_Transactions It works perfectly. I capture the ...
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1answer
64 views

Connect Metmask to ( local host ) port other than 8545

How to connect metmask to genach-GUI having port : 7545 instead of 8545 . Only network localhost :8545 is available on metamask Is it done through custom RPC network ? If yes, then how should ...
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36 views

getAccounts undefined recently

I've been using web3 v 0.20 and I recently noticed that getting accounts from web3.eth.getAccounts(function(error, accounts) { returns undefined. Is Metamask 7.2.1 forcing it to be undefined for ...
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132 views

Metamask error: Transaction error. exception thrown in contract code

I've been successfully compiled and deployed my smart contract Campaign.sol. All the functions in my contract can run successfully but as I use my javascript file RequestRow.js to call my function ...
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1answer
35 views

cannot be able to connect to private blockchain hosted at local VM

I want to use remix IDE and want to connect web3provider which needs to be connected to private blockchain running on VM locally. My system is running on Windows 10 and I am running the VM on my local ...
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34 views

Developing a dapp using Truffle. Metamask will sometime throw this error when interacting with a simple contract

Trying to setup my development environment to start a personal dapp project. I am starting off the project with the React truffle box. 1) I start by running truffle develop which launches a local ...
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83 views

send().catch() doesn't give me the error message anymore

I'm using Truffle/Drizzle/MetaMask and calling methods with send() and using .then() and .catch() and I rely on getting the error message send to .catch() e.g. contract.methods['hello'](arg).send({ ...

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