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Changelog

Stay in touch with new updates and improvements in the Alchemy ecosystem.

September 10, 2026

Wallet APIs

  • Fixed a bug in ERC-20 gas sponsorship where tokens with many decimal places could have sponsorship incorrectly rejected.

Paymaster

  • Added a new option to allow getting paymaster stub data for ERC-20 sponsored transactions where the sender acquires the ERC-20 payment token in the same transaction.

Rundler

  • Improved error classification on Arbitrum Nitro chains, so wrapped sequencer rate limits and underpriced errors are handled correctly.

Upgrades

  • Arc Mainnet: Arc Execution 0.8.0, arc-execution 0.8.0, arc-consensus 0.8.0, initGenesis d9e853e87e55526f6b2917df91a2115c36dd7c696a35be12163d44e6e2a4b6bc
  • Bitcoin Mainnet: electrs v3.0.1
  • Hyperliquid Mainnet: nanoreth b27c2985b33d4060838b2e474e2f88984d59aacab4ca035e9806098c879c8abe
  • Hyperliquid Testnet: nanoreth b27c2985b33d4060838b2e474e2f88984d59aacab4ca035e9806098c879c8abe
  • Panax Mainnet: nitro v3.11.3-beb2108
  • Scroll Mainnet: scroll scroll-v5.10.7
  • Tempo Mainnet: tempo 1.14.1
  • Tempo Moderato: tempo 1.14.1
  • Worldchain Sepolia: op-reth v2.4.3, op-node v1.19.5
September 3, 2026

Upgrades

August 27, 2026

Wallet APIs

  • SemiModularAccount7702 v1.1.0 is now supported on all networks. New v1.1.0 delegations can be requested on any supported network without a per-network opt-in.
  • Improved the error returned when attempting to use EIP-7702 on Monad. Requests where 7702 is disabled now surface a clear, actionable error instead of an opaque failure.

Solana

  • Added support for pre-funding rent during composed account creation. Gas sponsorship now correctly funds rent for accounts created via Transfer + Allocate + Assign flows (for example, associated token accounts, Anchor init, and Metaplex), so these sponsored user operations no longer fail preflight.

Rundler

  • Various improvements to Rundler retry logic to make bundle submission more resilient under transient upstream errors.

Usage API

  • The Usage API is now generally available under the Admin API. You can pull Alchemy usage data programmatically, without the dashboard or CLI:
    • GET /v1/usage/summary returns current billing-period totals plus rolling 7-day, 30-day, and month-to-date usage in compute units and USD, along with usage cap status and headroom.
    • POST /v1/usage/time-series returns usage in hourly or daily buckets, filterable by product, app, network, and method, and groupable by any one of them.

Upgrades

  • Boba Sepolia: op-node v1.19.4, boba-sepolia-reth v1.16.5, boba-sepolia-proofs v1.16.5, boba-sepolia v1.16.5
  • Flow Mainnet: flow-evm-gateway v1.5.7
  • Flow Testnet: flow-evm-gateway v1.5.7
  • Injective Testnet: evm-gateway v1.4.4
  • Katana Mainnet: op-reth v2.2.0
  • Katana Testnet: op-reth v2.2.0
  • Megaeth Mainnet: debug-trace-server debug-trace-server-v2.0.16
  • Mode Sepolia: op-reth v2.2.0
  • Ronin Mainnet: op-reth v2.2.0
  • Ronin Saigon: op-reth v2.2.0
  • Shape Sepolia: op-reth v2.4.1, op-node v1.19.5
  • Sseed Mainnet: op-reth v2.2.0, initGenesis 3.20
  • Stellar Mainnet: stellar-rpc 28.0.0-206, stellar-mainnet 28.0.0
  • Stellar Testnet: stellar-rpc 28.0.0-206, stellar-testnet 28.0.0
  • Superseed Sepolia: op-reth v2.2.0
  • Worldchain Sepolia: op-reth v2.4.2
  • Zksync Mainnet: zksync-en 9734bf2-1787057993929
August 24, 2026

Upcoming deprecations

  • Degen Mainnet (degen-mainnet) — Alchemy support ends on August 31, 2026. The Degen team is sunsetting Degen Chain to focus on social products within the Base ecosystem. Bridge any assets off degen-mainnet before the cutoff. See the Degen Mainnet Deprecation Notice.
August 20, 2026
Wallet APIs: EIP-7702 default changes September 21

Beginning September 21, 2026, new EIP-7702 accounts created through wallet_prepareCalls or wallet_requestAccount will delegate to SemiModularAccount7702 v1.1.0 by default on every supported network. Existing accounts are unaffected: they keep their recorded delegate and do not need to sign a new authorization.

If your application validates or recognizes accounts by delegate address or accountId(), add v1.1.0 to the accepted set before the rollout. Both versions remain supported, so accept both rather than replacing v1.0.0. You can opt in to v1.1.0 now or explicitly keep new accounts on v1.0.0.

Smart Accounts

  • SemiModularAccount7702 v1.1.0 is now deployed on all supported networks and available in the aa-sdk. It adds support for standard EOA signatures through ERC-1271, improving compatibility with Permit2 and similar applications without introducing a new signer or authority path. The release was audited by Octane.
  • Starting September 21, v1.1.0 will be the default delegation for new EIP-7702 accounts created through Wallet APIs. Existing accounts keep their recorded version unless another version is explicitly requested.
VersionDelegate addressaccountId()
v1.0.00x69007702764179f14F51cdce752f4f775d74E139alchemy.sma-7702.1.0.0
v1.1.00x77021100bD87b7008E5E1989d0eB38555d0d0000alchemy.sma-7702.1.1.0

Gas Manager

  • Added a step-by-step guide for paying gas with any ERC-20 token, covering how to price the token, configure the ERC-20 policy on the paymaster, and submit sponsored transactions from your app.

Admin API

  • App and chain management endpoints are now documented in the Admin API reference. You can programmatically create, update, and delete Alchemy apps, manage each app's network, origin, and IP allowlists, and list supported chains — everything the Alchemy Dashboard lets you do, callable from your own tooling with an access key. See the Admin API Quickstart for a full end-to-end example.

Upgrades

  • Animechain Mainnet: nitro-node v3.11.3-beb2108
  • Bsc Mainnet: Geth v1.7.8
  • Hedera Mainnet: relay 0.78.2
  • Hedera Testnet: relay 0.78.2
  • Hostcolor servers Core GreatVoyage-v4.8.2.1 (Release Notes)
  • Polygon Mainnet: Core Bor: v2.3.4
  • Robinhood Mainnet: nitro-node v3.11.3-beb2108
  • Tempo Mainnet: tempo 1.13.1
  • Tron Mainnet: java-tron GreatVoyage-v4.8.2.1
  • Tron Testnet: java-tron tron-nile-testnet-v4.8.2.1-pq1-build1, tron-testnet GreatVoyage-v4.8.2.1
  • Worldchain Mainnet: op-reth v2.4.2
August 18, 2026
NFT API endpoint deprecation notice

To streamline and improve the NFT API, Alchemy is sunsetting a small set of redundant endpoints — both their V2 and V3 versions — on September 30, 2026. Most have a direct V3 replacement already available. Until then, these endpoints continue to serve traffic; existing callers should migrate before the shutdown.

Being removed on Sept 30, 2026If you still need it, use instead
getCollectionsForOwner (V2 + V3)V3 getContractsForOwner
getCollectionMetadata (V2 + V3)V3 getContractMetadata
isHolderOfCollection (V2), isHolderOfContract (V3)V3 getNFTsForOwner
getSpamContracts (V2 + V3)V3 isSpamContract. Spam flags are also returned inline on V3 getNFTsForOwner / getNFTsForContract.
searchContractMetadata (V2 + V3)V3 getContractMetadata
summarizeNftAttributes (V2), summarizeNFTAttributes (V3)Aggregate collection traits via V3 getNFTsForContract
computeRarity (V2 + V3)Aggregate collection traits via V3 getNFTsForContract
invalidateContract (V2 + V3)No action needed; V3 refreshNftMetadata remains available
isAirdrop (V2), isAirdropNFT (V3)No direct replacement. Reach out to Alchemy support for guidance.
getNFTSales (V2 + V3)No direct replacement. Reach out to Alchemy support for guidance.

See the NFT API Endpoints overview for the current supported list.

Have feedback on this deprecation, or need help planning your migration? Reach out to Alchemy support and we'll work with you to find the right path forward.

August 13, 2026

Solana

  • Improved Solana paymaster transaction submission reliability by no longer pinning sendTransaction to the paymaster's simulation slot.
  • Added an opt-in rollout for rent-prefund simulation against confirmed Solana state, reducing failures caused by stale account data.
  • Clarified alchemy_requestFeePayer guidance: simulationSlot is intended for paymaster simulation only and should not be reused when submitting the transaction, helping integrators avoid stale-state failures.

Dashboard

  • API key rotation is now generally available in the Alchemy Dashboard. Rotate an existing app's API key from App Settings without changing the app itself — settings, history, and usage data are preserved, and the previous key stops working within 2 minutes. See How to Rotate API Keys for the full walkthrough.

Upgrades

  • Gnosis Chiado: nethermind 1.39.3
  • Gnosis Mainnet: nethermind 1.39.3
  • Pharos Atlantic: pharos pharos_community_v0.14.4_05cffaf0_0729
  • Rootstock Mainnet: rsk VETIVER-9.0.4
  • Sei Mainnet: Seid v6.6.1
  • Story Mainnet: geth v1.2.3
  • Superseed Sepolia: op-reth v2.1.2, op-node v1.19.3
August 6, 2026

Upgrades

  • ApeChain Curtis: nitro-node curtis4
  • Astar Mainnet: astar-collator v5.50.0
  • Berachain Mainnet: reth v1.4.4
  • Robinhood Testnet: nitro-node v3.11.2-3599aca
  • Stellar Mainnet: stellar-rpc 27.1.1-198
  • Stellar Testnet: stellar-rpc 27.1.1-198
  • Tempo Mainnet: tempo 1.12.0
  • Tempo Moderato: tempo 1.12.0
July 30, 2026

Upgrades

  • Bitcoin Testnet: blockbook 0.5.0
  • Bitcoincash Mainnet: bitcoind 29.1.0
  • Bitcoincash Testnet: bitcoind 29.1.0
  • Cronos Mainnet: zksync-en v31.3.0
  • Cronos Testnet: zksync-en v31.3.0
  • Gensyn Mainnet: op-node v1.19.0, op-reth v2.3.3
  • Gensyn Testnet: op-node v1.19.0
  • Lens Mainnet: zksync-en v31.1.0
  • Pharos Mainnet: pharos pharos_community_v0.15.0_d6d98fd3_0720
  • Settlus Mainnet: op-node v1.19.0
  • Settlus Sepolia: op-node v1.19.0
  • Shape Mainnet: op-node v1.19.0
  • Shape Sepolia: op-node v1.19.0, op-reth v2.3.3
  • Tempo Mainnet: tempo 1.11.0
  • Tempo Moderato: tempo 1.11.0
  • Worldchain Sepolia: initGenesis v2.3.3
  • Zksync Mainnet: zksync-en v31.1.0
July 23, 2026

Wallet APIs

  • Wallet API responses now surface a clear message when a request is rate-limited because the underlying contract or account is delinquent, so you can identify the cause directly from the response.
  • User operation status lookups now reflect more recent activity, thanks to a reduced internal time buffer when checking on-chain state.
  • Robinhood Mainnet is now on the eth_getLogs unlimited block-range list, removing the default range limit for event and log queries.

Upgrades