Discussions
Why is my app calling eth_chainId so many times?
Hello,
I have a python script that uses web3.py and does various things like querying an address balance, trading crypto, getting price data etc.
I noticed on my Alchemy dashboard that every other RPC call is an eth_chainId call. In my script I am calling Web3.eth.chain_id only once and storing it for the duration of my runtime. So I'm wondering how or why I am making so many calls? Do I need to specify chain id when I first instantiate my web3 socket connection or else it will make this call over and over? Something else? Thanks.
Posted by flim.eth 2 days ago
eth_getTransactionByHash input decode
How do you decode the input value?
Posted by Quang 3 days ago
Running Error : Type Error in index.js
Dear Team,
I was in Second Part of the Tutorial , Minting my NFT , I went to the terminal and typed : node scripts/mint-nft.js.
Then I got a running error on a file that I didnt write. It is a file automatically generated , called : index.js, the error is : TypeError: Cannot read properties of undefined (reading 'toHexString')
How can I solve this problem , Please help.
Arturo
Posted by Arturo Herrera 4 days ago
Nft metadata force refresh
Is possible to get just updated NFT metadata from api like a force refresh?
How long does Alchemy keep NFT metadata in cache until refresh it for public calls?
Posted by Rony de Lucca 5 days ago
Address blacklisted
Hello.
I can't seem to execute smart contract method on a smart contract. Alchemy endpoint returns this:
`ProviderError: Address <xxx> is blacklisted.`
Why is that? Why would an address on ethereum be "blacklisted"?
Posted by Egor Egorov 5 days ago
EVM_Snapshot error
I am getting this error when I test my smart contract on rinkeby
ProviderError: Unsupported method: evm_snapshot. See available methods at https://docs.alchemy.com/alchemy/documentation/apis
I am using this RPC url
RINKEBY_RPC_URL_OLD=https://eth-rinkeby.alchemyapi.io/v2/BG92v2ejEUplKTgsKpmUiW8miuV6aGIO
Is it because of deprication of rinkeby testnet? Should I test on Goerli?
I am also using Chainlink VRF/Keepers in my code. Chainlink keepers do not support Goerli. What are the other options for me?
Posted by Meenu 9 days ago
Unable to fetch all NFT owners with token balances for the OpenSea shared storefront contract
Hi - I'm trying to fetch all the NFT owners for the OpenSea Shared Storefront contract (`0x495f947276749ce646f68ac8c248420045cb7b5e`) using [Alchemy's getOwnersForCollection](https://docs.alchemy.com/reference/getownersforcollection) endpoint with the `withTokenBalances` parameter.
It returns me a 500 error. It however works when I remove the `withTokenBalances` parameter
Posted by George 9 days ago
Does Alchemy's Solana endpoint support logsSubscribe ?
I was trying to query logsSubscribe using solana cli using the below command
`solana logs <address> --ws wss://solana-devnet.g.alchemy.com/v2/<My-Alchemy-API-Key>`
but it returns the below error
```
Streaming transaction logs mentioning 9SNdwhMrxADTVkakYPUe6pDD9rXdbQn4eFUGwoSrhuns. Confirmed commitment
Error: unexpected message format: {"error": Object({"code": Number(-32601), "message": String("Unsupported subscription method: logsSubscribe")}), "id": Number(1), "jsonrpc": String("2.0")}
```
Posted by Aniket Gupta 11 days ago
Is getNftsForOwner not a function?
I'm getting an error with the Alchemy SDK when running the below code
```
const nftsForOwner = await alchemy.getNftsForOwner(account, {
contractAddresses: [
"0xe361f10965542ee57D39043C9c3972B77841F581",
],
withMetadata: true,
});
```
The error I'm getting is `TypeError: alchemy.getNftsForOwner is not a function`
This is being run as an API request on next.js to keep the API Key environment variable hidden.
Posted by Aniket Gupta 11 days ago
How do I get ENS domain transfers using Alchemy Transfers API (alchemy_getAssetTransfers)?
I'm using the Transfers API (Tx History) -- Internal Eth Transfers, but i cant get ENS txns in its response.
Here is the json rpc request I'm making:
```
{
"jsonrpc": "2.0",
"id": 0,
"method": "alchemy_getAssetTransfers",
"params": [
{
"fromAddress": "0xDce63CBee5E3f5d30729b777a11385B58b711a3c",
"excludeZeroValue": true,
"withMetadata": true,
"category": [
"internal",
"erc20",
"erc721",
"erc1155",
"specialnft"
]
}
]
}
```
I expect the ENS domain transfer that shows up in this transaction hash (`0xc97431eec5791405982b3d1873ed38062e5ea2542997aad9468efb28075bc88f`) to appear in the api call response, but it isn't there.
How can I debug this?
Posted by Aniket Gupta 12 days ago