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
0
answers
270
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
1
answer
580
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 ...
- 2,301
2
votes
1
answer
68
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 ...
- 788
2
votes
1
answer
80
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
0
answers
51
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 ...
- 53
2
votes
1
answer
50
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, ...
- 374
1
vote
0
answers
21
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
11
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
42
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
1
answer
18
views
before all" hook for "should allow a purchase" error - Chainshot
I am completing series of tutorials on chainshot. Now I am on events 4. - Sale and I am getting an error
"before all" hook for "should allow a purchase"
and I don't have an idea ...
- 11
1
vote
2
answers
40
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
20
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 ...
- 55
1
vote
0
answers
41
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
44
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
106
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
80
views
Decode eth_call transaction
How to read "data params" and "value result" from eth_call method on Alchemy explorer ?
thanks.
- 41
1
vote
0
answers
101
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": "...
- 9,354
1
vote
1
answer
204
views
Minting 3D files onto opensea
I am new and I am building an NFT collection on Open Sea for my personal project. I have watched a couple of videos from Alchemy, the ERC721 smart contract video outlined how to upload and host files ...
- 11
1
vote
1
answer
756
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 ...
- 4,216
1
vote
0
answers
189
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
31
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
216
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
144
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
228
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 ...
- 341
1
vote
1
answer
385
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
333
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
147
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
0
votes
0
answers
14
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
10
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
12
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
22
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
17
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 ...
- 9,354
0
votes
1
answer
15
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
24
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
50
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
0
answers
78
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
13
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 ...
0
votes
1
answer
48
views
CORS policy error when trying to render image from pinata ipfs
pinata.js file
const FormData = require("form-data");
export const uploadJSONToIPFS = async (JSONBody) => {
const url = `https://api.pinata.cloud/pinning/pinJSONToIPFS`;
//making ...
0
votes
1
answer
21
views
how to receive values from openzeppelin royaltyInfo function
trying to implement like this
uint[2] memory royalty = royaltyInfo(_tokenId, price);
payable(royalty[0]).transfer(royalty[1]);
but getting error
TypeError: Different number of components on the left ...
0
votes
0
answers
37
views
Wrong simulated univ3 swaps using Alchemy alchemy_simulateExecution API
we are using your API endpoint alchemy_simulateExecution , but for some reason we seem to receive wrong values here.
for example check this tx: ...
- 11
0
votes
0
answers
40
views
Error: call revert exception (method="getTotWaves()", errorArgs=null, errorName=null, errorSignature=null, reason=null, code=CALL_EXCEPTION,)
when i click "Wave at me" button i encounter with this call revert error!.
here is the App.js
import React, { useEffect, useState } from "react";
import { ethers } from "...
0
votes
1
answer
28
views
Type Error: Member "userAddress" not found or not visible after argument-dependent lookup in struct wavePortal.Payment storage ref[] storage ref
THE CODE:
//SPDX-License-Identifier: MIT
pragma solidity >= 0.8.0 < 0.9.0;
import "hardhat/console.sol";
contract wavePortal {
struct Payment {
address userAddress;
...
0
votes
2
answers
134
views
How to check the balance of a wallet within a contract and assign balance to a variable?
I'm trying to require the number of contract NFTs in a wallet < declared uint256 variable in order to proceed with safemint function. I have the following code but I can't work out what is ...
- 1
0
votes
1
answer
169
views
How to get NFT transfer value using Achemy API
We are using getAssetTransfer to get all the transfers from and to a wallet for a specific NFT contract, similar to this https://docs.alchemy.com/docs/how-to-get-the-transfer-history-of-an-nft.
We are ...
0
votes
1
answer
419
views
Alchemy provider API provider does not support signing
I am using AlchemyProvider with ether.js to deploy a smart contract using frontend data
But I am not able to sign the provider i.e AlchemyProvider.
Code
const provider = new ethers.providers....
0
votes
1
answer
229
views
passing topics to the Alchemy eth_getLogs API call
I'm trying to use the Alchemy API to find specific events thrown by a set of contracts. One of the args that can be passed to the call is a list of topics (I'm using python, but my question is ...
- 13
0
votes
1
answer
119
views
Alchemy api eth_getProof returns a wrong storage slot
I encountered a issue that eth_getProof returns wrong storage key and proof. This is a bash script which could reproduce the issue. And after some tests, I found increasing the interval between thoes ...
0
votes
0
answers
76
views
Ethers ContractFactory not working for polygon mainnet
I'm using ethers' ContractFactory to deploy a contract with Alchemy RPCs.
async deployContract(contractObject: ContractObjectDto) {
try {
const chain = contractObject.chain.toLowerCase() as ...
0
votes
1
answer
54
views
How to use airdrop filter in parameters of alchemy's getNFT api
hello ! I have a question while using the alchemy api.
As shown in the picture above, it says tha can put "Airdrop" in the parameter "includeFilters[]" of the api. I'm running an ...
- 331