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.
105
questions
0
votes
2
answers
15
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....
0
votes
1
answer
9
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 ...
- 11
0
votes
0
answers
9
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
1
answer
123
views
How to find total value in ETH of all NFTs owned by a user
I am aware that we could find all the NFTs owned by a user using alchemy’s NFTs API. However, I was wondering if there was a way to them compute the value of that particular users portfolio.
0
votes
2
answers
136
views
Insufficient funds when trying to deploy smart contract at goerli test network with alchemy
When I run the command "npx hardhat run scripts/deploy.js --network goerli" it gives me the error Error: insufficient funds for intrinsic transaction cost.
More specifically looks like this:...
0
votes
1
answer
42
views
reason: 'execution reverted: Not enough ether to purchase NFTs.', code: 'UNPREDICTABLE_GAS_LIMIT',
I am attempting to deploy a smart contract to the Sepolia testnet. I currently have ~1 Sepolia eth in my wallet. I am using Hardhat and Alchemy and I am following this tutorial Here is my code for ...
- 37
0
votes
0
answers
10
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 -->",
...
3
votes
1
answer
216
views
If `provider` is essential in communicating with the blockchain, how is this following code working?
Here is the smart contract code:
// SPDX-License-Identifier: MIT
pragma solidity 0.8.19;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
interface Bucket {
function drop(...
- 310
2
votes
1
answer
54
views
Can someone explain me providers and the different types of it?
I can make providers using ether-hardhat, alchemy, and metamask. What is the difference between these?
- 310
1
vote
1
answer
31
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: '...
- 11
0
votes
1
answer
52
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
33
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, ...
- 345
0
votes
3
answers
48
views
Getting NFTs of an address in a specific collection
I am using Alchemy API to handle fetching NFTs and their metadata in my platform. It has valuable methods, such as retrieving all issued NFTs of a collection or all owned NFTs of an address within a ...
- 345
0
votes
1
answer
45
views
Decode eth_call transaction
How to read "data params" and "value result" from eth_call method on Alchemy explorer ?
thanks.
- 21
0
votes
0
answers
27
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
25
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
82
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
1
vote
0
answers
59
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": "...
- 8,744
0
votes
3
answers
440
views
Retrying after error: 429: Your app has exceeded its concurrent requests capacity - fetching NFTs
I was fetching NFTs from certain contract for connected wallet using alchemy-sdk, and it was working fine, NFTs were retrieved and displayed on the frontend app.
But unfortunately this solution ...
- 167
0
votes
1
answer
109
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
251
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
124
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
17
views
Can we sell the physical goods using ERC721?
I'm new to this. can anyopne provide any feddback to the following things:
I need to build the marketplace to sell physical goods.
Can we sell the physical goods using ERC721?
I need to update the ...
0
votes
3
answers
434
views
When I try to deploy my smart contract to the goerli network, nothing happens
I finally got to test my smart contract for the first time on the Goerli network through alchemy. It worked twice as I check on Etherscan which is now gone, but when I run the command; 'npx hardhat ...
- 1
1
vote
3
answers
405
views
Does Alchemy "getAssetTransfers" get all transactions or just all asset transfers?
I'm working with alchemy's SDK and it looks like the getAssetTransfers API endpoint will return any value transaction from an address.
However, it also looks like it can return a list of all ...
- 8,744
0
votes
1
answer
100
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
57
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
44
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 ...
- 189
1
vote
1
answer
111
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
votes
1
answer
436
views
List of all transactions of a *specific* ERC20 token for a given wallet address using the alchemy-sdk? [duplicate]
For example, if I want to see all of the USDC transactions related to my wallet address, how can I fetch all of those transactions?
USDC contract address: 0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48
My ...
- 353
0
votes
1
answer
36
views
Unable to find WETH contract in mainnet fork
I have created a fork of the ethereum mainnet using Alchemy. When I try to fetch the WETH contract in the fork, it says no contract deployed at the given address (...
- 1
0
votes
1
answer
27
views
Transactions in metamask fails via Alchemy
All transactions done in metamask fail.
I've followed the docs https://docs.alchemy.com/docs/how-to-add-alchemy-rpc-endpoints-to-metamask
and added Goerli.
I tried to send USDC on Goerli and sadly, it'...
0
votes
1
answer
239
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 ...
- 131
0
votes
0
answers
65
views
Obtain all smart contract addresses on Ethereum
I appreciate this question has been asked in various of formats over the last few years, but things in the Ethereum world move fast, so often answers get outdated quickly.
Is there any 3rd party tool ...
0
votes
0
answers
69
views
Issues with Alchemy getContractMetadata endpoint
I have created a new ERC-1155 NFT collection for my project but for some reason Alchemy's getContractMetadata endpoint does not recognizes it at all.
I'm filtering by contractAddress: ...
0
votes
0
answers
27
views
Alchemy NFT tutorial Help
The how to airdrop NFTs guide (https://docs.alchemy.com/docs/how-to-airdrop-nfts#step-3-write-the-smart-contract) does not specify how to add IPFS/metadata to the NFT like in the how to create an NFT ...
- 1
0
votes
0
answers
26
views
Solidity Alchemy API getNFTsForcontract only return 100 results
async function main() {
// Contract address
const address = "0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D";
// Flag to omit metadata
const omitMetadata = false;
// Get all NFTs
...
- 25
0
votes
1
answer
115
views
Alchemy Websocket Sub with Filter on Arbitrum Returns No Messages
The following sub with filter is not resulting in an error and no messages are received for newly mined txns:
'{"jsonrpc": "2.0", "id": 1, "method": "...
- 11
2
votes
0
answers
42
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
0
votes
1
answer
30
views
How can I query the NFTs associated with an account on a local test environment?
I wrote a smart contract which enables accounts to purchase NFTs. I now want to display the NFTs bought and associated with the connected account on a website.
The Alchemy API seems to be a good ...
- 151
4
votes
3
answers
748
views
Trying to understand the difference between trace_call and debug_traceCall methods
can someone help me understand the difference between trace_call and debug_traceCall? From what I've read, trace_call is to see the opcodes executed and the gas used for a transaction. debug_traceCall ...
4
votes
0
answers
255
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
0
votes
1
answer
21
views
Minting NFT...do I need to specify something to perform proof-of-stake instead of proof of work?
That's a simple question, do I need to specify something to perform proof-of-stake minting instead of proof-of-work?
The question came to my mind looking at this Legacy field of alchemy (Transaction ...
- 113
0
votes
1
answer
230
views
Unable to mint an NFT with new contract,. Error: 'Returned error: execution reverted: Ownable: caller is not the owner'
I've returned on a project I worked before the merge of ETH Blockchain and the project was just a demo so I never tried it successfully.
I've updated my contract and when I peform the
var ...
- 113
1
vote
0
answers
62
views
During minting of nft ndRestPayload.js:16 if (!url.includes("alchemy")) ^ TypeError: Cannot read properties of undefined (reading 'includes') [closed]
if (!url.includes("alchemy")) {
^
TypeError: Cannot read properties of undefined (reading 'includes')
at Object.makeRestPayloadSender (F:\hardhat-nft\node_modules\@alch\...
- 11
0
votes
1
answer
950
views
goerli hardhat deploy and test hung
We have been trying to deploy contracts and run tests against them on the goerli network. For the past few days, the network seems unusable. Transactions doesn't come back. Contracts deployment ...
- 111
0
votes
0
answers
47
views
Swift development with Alchemy SDK - sendTransaction - Connection failed
We use swift to develop a wallet app. Tried to use "sendTransaction" in Alchemy SDK to post the request. But got the following errors like:
"2022-10-09 11:13:35.488947+0800 RequestDemo[...
0
votes
1
answer
266
views
Hardhat not able to fork the mainnet
I want to fork the polygon mainnet using hardhat but don't know why it's giving me this error:
Error HH604: Error running JSON-RPC server: Invalid JSON-RPC response's result.
Errors: Invalid value ...
1
vote
1
answer
211
views
How to use the alchemy api on a local hardhat node?
I am working on a website in which I want to call on different NFTs connected
to the currently selected MetaMask account.
For testing I am running a local Hardhat node on which I have deployed my ...
- 151
1
vote
4
answers
565
views
Get all Nfts of a collection owned by a wallet using alchemy sdk
I am using alchemy sdk , can u please tell me how I can use getNftsForOwner() to get all the nfts owned by a wallet of a particular contract adddress? I need the exact syntax. Thank u
