The includeFilters[] parameter has been added to the getNFTs API. When includeFilters[] are set, only NFTs that match one of the specified filters will be included in the result. For clarity, the existing filters[] param has been renamed to excludeFilters[] (note: this is NOT a breaking change, as the filters[] param will continue to be supported). includeFilters[] and excludeFilters[] are mutually exclusive, and specifying both types of filters will result in an error.

The eth_call and eth_estimateGas gas limits have increased for all chains to 550 million Gwei.

alchemy_minedTransactions is now available as a WebSocket subscription type on all EVM networks to subscribe to mined transactions based off given filters.

AWS is updating their Certificate Authorities.
Most users will not experience an impact from this change.

The Ropsten, Kovan and Rinkeby networks on Ethereum will no longer be supported on Alchemy. All requests to those networks after this date will return HTTP 410 errors. We strongly recommend switching over to Goerli as soon as possible. Here is a short guide on how to migrate.

Following methods are now supported on Ethereum, Polygon, Optimism, and Arbitrum.

The ownedCount field of getContractsForOwner has been replaced with two new fields: totalBalance, which is the sum of all balances held on all tokens on a contract; and numDistinctTokensOwned, which is the number of distinct token IDs held. The ownedCount field (which currently holds the same data as totalBalance) is deprecated and will be removed after a few weeks.

alchemy_getTransactionReceipts no longer defaults to blockHash if both blockHash and blockNumber are provided. You will instead receive an error asking you to explicitly pick either blockHash or blockNumber.

The summarizeNFTAttributes endpoint (previously named summarizeNftAttributes, with 'Nft' uncapitalized) is now named summarizeNFTAttributes for consistency with the naming of our other endpoints. Please switch over to the new capitalization. For convenience, both names will be supported temporarily.

The 'contract' field in the summarizeNftAttributes endpoint response is being renamed to 'contractAddress' for better consistency with our existing endpoints. For convenience, both fields will be included in the response until 9/19, at which point the 'contract' field will no longer be returned.