Questions tagged [alchemy]
Used for questions related to Alchemy, a Web3 developer platform that provides supernode infrastructure, enhanced APIs, and other building and monitoring tools for building decentralized blockchain applications.
75
questions with no upvoted or accepted answers
4
votes
1
answer
289
views
Goerli Smart Contract Deployment taking way too long because of pending transactions
My deployments are very slow. I've read that I need to override pending transactions by resetting the nonce. I'm using Infura. Is there a way to view pending transactions and their nonce like I would ...
- 67
3
votes
0
answers
76
views
Contract events not being emitted reliably from ethers
I'm having a problem with contract events being not reliable as in they are mostly not emitted but sometimes are emitted.
Events from a smart contract (Gnosis Safe contract, SignMsg but true for other ...
- 73
3
votes
1
answer
753
views
Get logs for a transaction without actually sending the transaction
I'm trying to simulate a transaction without actually sending the transaction. The trace_call method (on Alchemy) returns 3 types of traces - vmTrace, trace, stateDiff. The trace object returns all ...
- 2,401
2
votes
1
answer
256
views
Why is Alchemy eth_getLogs not finding event logs for AaveV3 Supply events?
I have created a Node project that connects to Alchemy via ethers. I am trying to capture all Supply events for AaveV3
However, when I use the getLogs function, and use the contract address as the ...
- 818
2
votes
1
answer
193
views
Does Alchemy support batch requests for getAssetTransfers?
I am trying to make a batch request for getAssetTransfers endpoint.
However, when I try to do this, I get this error:
jsonrpc: '2.0',
id: 1,
error: {
code: -32600,
message: '...
- 21
2
votes
1
answer
82
views
Is dedicated gateway a need for marketplace projects?
I am developing an NFT marketplace. It has a section showing images of NFTs ( NFTCards with some information ) of a specific contract address. Since the number of minted NFTs by the contract is high, ...
- 382
1
vote
0
answers
138
views
Alchemy API: How to get transaction history including failed and pending transactions for a specific wallet address?
In React I'm building a transaction history screen to list succeeded, failed and pending Polygon transactions. Using alchemy_getAssetTransfers I can retrieve the transaction history for a specific ...
- 111
1
vote
0
answers
128
views
Why Alchemy responds eth_getBlockByNumber with wrong data
Network: Polygon Mainnet.
I am using the Alchemy RPC in the following manner: I listen for new blocks and then retrieve block data, including transactions, based on the block number. However, today my ...
1
vote
0
answers
22
views
How to filter smart contracts via method signature
is there anyone here who is an expert on dune/ethereum etl/alchemy? the question is - i'm doing research and want to find a quick way to query all smart contracts that implement/have called a certain ...
- 11
1
vote
0
answers
86
views
Unable to run concurrent contract executions on polygon mainnet (Alchemy)
I'm currently encountering a peculiar issue on the Polygon Mainnet, which doesn't seem to occur on the Testnet. When running two or more parallel node processes which have two different wallets with ...
- 11
1
vote
2
answers
99
views
getting error as deploy file not found
require('dotenv').config();
require('@nomicfoundation/hardhat-toolbox');
const API_URL = process.env.API_URL;
const PRIVATE_KEY = process.env.PRIVATE_KEY;
const API_KEY=process.env.API_KEY
console....
- 23
1
vote
1
answer
52
views
Etherjs "contract.on" method in Reactjs to read events not loading on console
I am trying to display the events that are emitted from a function in my smart contract to the front end of my dApp, and I feel like I am missing a step in the connection process with my dApp.
I've ...
- 75
1
vote
0
answers
79
views
Alchemy notify slack webhook not working properly
I'm trying to get notifications on an address piped to slack, and Alchemy apparently has a free tool for this, but I can't get the webhook to work. Copied it directly from the slack app, but the tests ...
1
vote
0
answers
94
views
How Can I get both Incoming and Outgoing transactions from "getAssetTransfers" inside one request?
I'm working with alchemy's SDK.
And as per the Alchemy SDK documentation, it says we can get all the transactions
like this:
const config = {
apiKey: "<-- ALCHEMY APP API KEY -->",
...
- 11
1
vote
1
answer
237
views
Not able to send transaction using alchemy sdk
Hey i have to build a ERC20 contract and using alchemy sdk to send transactions onchain
For eg mint or burn tokens. But i am not able to send a transaction as its showing an error of cannot estimate ...
1
vote
1
answer
128
views
Decode eth_call transaction
How to read "data params" and "value result" from eth_call method on Alchemy explorer ?
thanks.
- 61
1
vote
0
answers
136
views
Alchemy API returning "not found" on endpoints in docs
I have the following code:
import requests
url = "https://eth-mainnet.g.alchemy.com/v2/<REDACTED_API_KEY>/findContractDeployer"
payload = {"contractAddress": "...
- 10.5k
1
vote
1
answer
1k
views
Use EthersJS to connect to either Alchemy or Infura depending on availability
I've noticed that relying on one provider API can be problematic at times of heavy server load. I would like to use EthersJS to choose either Infura or Alchemy depending on which network is available ...
- 4,436
1
vote
0
answers
205
views
"Error HH100: Network rinkeby doesn't exists
I am running through learnweb3.io 'Build your own simple NFT tutorial' and I keep getting the error: Error HH100: Network rinkeby doesn't exist
This is what my deploy.js file looks like:
// Import ...
- 11
1
vote
0
answers
43
views
Alchemy getOwnersForCollection missing some owners
Using the Alchemy API and getOwnersForCollection endpoint on Optimism, the returned list seems to be missing some holders despite those addresses having a balance for that collection. Here is the code ...
- 11
1
vote
1
answer
322
views
Alchemy's getNFTMetadata does not return title and description for freshly minted NFT on OpenSea
I connected to the testnet OpenSea and minted an NFT on Rinkeby.
After that I called alchemy's getNFTMetadata and it did return some data, but "title" and "description" were empty, ...
1
vote
0
answers
155
views
Alchemy pending transactions indefinetly
I changed literally nothing and the transactions for contract creations don't go through anymore.
I'm using hardhat and deploying on mumbai. I have set blockGasLimit: 999999999999999,.
Any ideas why ...
- 23
1
vote
0
answers
251
views
Alchemy Mumbai endpoint not working from truffle
I am trying to deploy some smart contracts on Mumbai network from truffle using an Alchemy endpoint I just created.
this is my truffle-config.js
But I am getting errors all the time :
Not to long ...
- 363
1
vote
2
answers
438
views
Sending hundreds of transactions every minute, TXs seem to get randomly stuck in mempool even after setting high gas
I'm building an application that needs to send hundreds of transactions every minute (consistently for hours & even days) to the Polygon blockchain.
To achieve this I'm
setting unique (and +1 ...
1
vote
0
answers
365
views
Wait for web3.eth.sendSignedTransaction and lambda timeout
I'm using alchemy to mint NFT and in the specific case this piece of code
//the transaction
const tx = {
from: PUBLIC_KEY,
to: blockChainAddress,
nonce: nonce,
...
- 113
1
vote
1
answer
174
views
How can I properly set a minting price with Alchemy?
I am having trouble establishing a mint price as Alchemy offers a too abstract coding practice for the smart contract part. I would like to know how I might set a minting price for my collection so ...
- 11
1
vote
0
answers
30
views
NFT on Opensea #Alchemy
I followed all steps in 3 parts of this tutorial https://ethereum.org/en/developers/tutorials/how-to-view-nft-in-metamask/ I also registered NFT in Metamask wallet. Wallet adress ...
- 11
1
vote
2
answers
668
views
Forking mainnet with Hardhat + Alchemy fails with "Too Many Requests"
Running into a problem attempting to test with hardhat by forking mainnet. I'm following the instructions here: https://hardhat.org/hardhat-network/docs/guides/forking-other-networks. I have a ...
- 151
0
votes
0
answers
44
views
sending a transaction requires a signer (operation="sendTransaction", code=UNSUPPORTED_OPERATION, version=contracts/5.7.0)
import React from 'react';
import './App.css';
import { useState, useEffect } from 'react';
// import { ethers } from 'ethers';
import contract from './RPSLS.sol/RPSLS.json'
const { ethers, ...
- 9
0
votes
0
answers
124
views
"Error happened while trying to execute a function inside a smart contract" after trying to call smart contract function with fork ethereum chain
I am forking Ethereum blockchain using Alchemy's api. Below is my chain config
module.exports = {
solidity:
{
compilers :[
{version : "0.8.17"},
{version: "0.8.4"}...
0
votes
1
answer
95
views
Error: factory runner does not support sending transactions (operation="sendTransaction", code=UNSUPPORTED_OPERATION, version=6.7.1)
I have run into the above error trying to deploy my contract. Running npx hardhat scripts/deploy.js.
Here is the deploy.js:
async function main() {
const Test1 = await ethers.getContractFactory(&...
- 3
0
votes
0
answers
67
views
Must be authenticated error using Alchemy RPC URL
I am getting this error
Error:
(code: -32000, message: Must be authenticated!, data: None)
When running this command
forge script script/DeploySimpleStorage.s.sol --rpc-url $SEPOLIA_RPC_URL --...
- 31
0
votes
2
answers
46
views
version problem in hardhat
const hre = require("hardhat");
// Returns the ether balance of a given address.
async function getBalance(address) {
const balanceBigInt = await hre.ethers.provider.getBalance(address);
...
- 9
0
votes
1
answer
19
views
How to find the origin of the token/crypto in the wallet?
For example,
Wallet 0x...A1 has 0.5 ETH. I want to know about the origin of 0.5 ETH.
Can I get that data from the Etherscan API (what endpoint?) or another solution?
- 1
0
votes
0
answers
120
views
Error with Sepolia Faucet - ReCAPTCHA not Recognized Despite Correct Completion
I am facing an issue while using the Sepolia Faucet provided by Alchemy through sepoliafaucet.com. Every time I try to access the faucet and complete the ReCAPTCHA, I encounter the error message,
&...
0
votes
1
answer
41
views
Given token id of ERC1155, how to find out how many copies of it are there?
This may not be possible to implement in an easy fashion via the standard calls only to blockchain, therefore I'd consider third-party API providers such as Alchemy.com
I'm aware of, let's say, ...
- 49
0
votes
0
answers
80
views
Alchemy Account Activity webhook not firing for internal transfers
According to the webhook docs when listening for account activity on an address it should include internal transactions. I'm not seeing any though. For example when i list a NFT for sale on OpenSea ...
- 151
0
votes
0
answers
22
views
Forking Polygon PoS with hardhat + Alchemy Failing with Connection Timeout Error
I am trying to fork the Polygon PoS with Alchemy and it gives me the error of timeout while my internet connection is pretty good. I don't know why sometimes it runs successfully and sometimes it ...
- 26
0
votes
0
answers
26
views
Test networks not working
I am using Hardhat, Alchemy and Goerli to test my SC. But for some reason NONE of my txns go through. They are all stuck in "Pending" within Alchemy. I have tried both Goerli and Sepolia ...
- 55
0
votes
0
answers
34
views
Alchemy getAssetTransfers function doesn't return all transactions
I am using alchemy and axios to get all the transaction history for an address
Here is the code:
var categoryList = [];
categoryList.push("external");
categoryList.push("internal");...
- 289
0
votes
0
answers
105
views
Trying Uniswap V3 Swap Example - Error: Transaction reverted: function call to a non-contract address
Have been getting bellow error message:
SwapExamples
swapExactInputSingle:
Error: Transaction reverted: function call to a non-contract account
at SwapExamples.swapExactInputSingle (contracts/...
- 1
0
votes
0
answers
15
views
How to get list of all NFTs owned by a EOA in a specific collection
I want to get all the NFTs an EOA owns in a specific collection but I found that none of the SDKs like Alchemy, Infura, etc provides this feature. So how can I do that?
0
votes
0
answers
146
views
I am Getting this error ProviderError: Must be authenticated!
ProviderError: Must be authenticated!
at HttpProvider.request (/workspaces/Decentralized-Voting-Application-on-Ethereum-Blockchain/node_modules/hardhat/src/internal/core/providers/http.ts:88:21)
...
- 77
0
votes
0
answers
36
views
i got a ParserError: Expected '(' but got identifier while using Hardhat
I got this error in the terminal while running the npx Hardhat compile I've tried looking at the other examples of the error Stack Exchange but none have been able to provide a fix for my issue.
...
0
votes
0
answers
56
views
How to create `ee-jwt-secret-file` for Teku node with Alchemy
I am looking to run a Teku node, but instead of connecting it to my own execution client, I'm looking to connect to a node as a service.
Is this possible
How do I create a ee-jwt-secret-file from ...
- 10.5k
0
votes
1
answer
24
views
How to set owner wallet into useState from router.query?
I'm trying to set the address of a connected wallet into useState as string so that another function can use it to run it's function.
const router = useRouter();
const { walletAddress } = ...
0
votes
1
answer
85
views
Using connected wallet to fetch all NFTs using alchemy sdk
I'm trying to pass the user's connected wallet into getNftsForOwner function but am not sure how to do it. If I type out the address into the function like this:
const NFTs = await alchemy.nft....
0
votes
1
answer
348
views
Ethers.js Batch Fetch Archive Transactions by Hash
I have a big array of emitted events that I retrieved using an archive node with Ethers queryFilter. I want to get the transaction parameters for each of those transactions.
I am using Ethers.js await ...
- 126
0
votes
1
answer
242
views
Derived contract must override function "supportsInterface". Two or more base classes define function with same name and parameter types
TypeError: Derived contract must override function "supportsInterface". Two or more base classes define function with same name and parameter types.
--> royalty.sol:9:1:
|
9 | contract ...
0
votes
0
answers
19
views
const { walletAddress } = req.query not passing wallet address to alchemy api
Alchemy api isn't recognizing the wallet address given by req.query. Not sure why. I tested it using Moralis api and it worked fine. Is this a known issue or is there a better way to input the ...