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 3 days ago
eth_getTransactionByHash input decode
How do you decode the input value?
Posted by Quang 4 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 5 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 6 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 6 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 10 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 10 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 12 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 12 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 13 days ago