trace_callMany support has been removed in addition to vmTrace. See Trace API Quickstart for details.

The Rinkeby testnet will no longer be supported after the Ethereum merge so no new apps can be created on Rinkeby through Alchemy. We recommend instead using the Goerli network.

trace_rawTransaction has not yet been implemented at the trace node client level (Erigon) so Alchemy is unable to support this method. Once it is built on the node level we will bring back support!

alchemy_newFullPendingTransactions and alchemy_filteredNewFullPendingTransactions has been replaced with alchemy_pendingTransactions WebSocket subscription.

Added two new beta endpoints to get data on NFT attributes and rarity. The computeRarity endpoint computes the prevalence of each attribute for an individual NFT. The summarizeNftAttributes generates a summary of attribute prevalence across a collection.

The /getNFTs endpoint now supports an AIRDROPS filter that removes all airdropped tokens from the API response. Airdrops are defined as tokens which were minted to a wallet address in a transaction sent by a different address. Because most spam NFTs are also airdropped, this filter may be useful in removing spam from API responses.

Added token inference support to alchemy_getTokenBalances.

Added a uniqueId field to transfer responses of alchemy_getAssetTransfers.

Removing support for unprotected transactions that do not adhere to the EIP 155. Please make any necessary code changes ahead of time to protect your transactions from replay attacks by including the chainId field in your transaction payload.

Optimism Kovan will be deprecated in favor of Optimism Goerli. We recommend migrating your applications from Optimism Kovan to Optimism Goerli ASAP.