Articles written by Kunal Roy

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For developers

Supernode

The web3 engine

NFT API

Build any NFT app

Token API

Token balances and metadata

Transfers API

Complete transaction history in one call

Transact

Send transactions 7.9x faster

Subgraphs

Speedy indexing for custom GraphQL APIs

Webhooks

Fast, consistent push notifications

Custom Webhooks

Real-time data for custom events

Smart Websockets

Blockchain connection for ongoing data

Transaction Simulation

Transaction previews for any use case

Account Kit

Embedded wallets, smart accounts

Gas Manager API

Sponsor gas, boost transactions

Bundler API

Batch transactions to save costs

Account Contracts

ERC-4337 smart contract accounts

For chains

Rollups

The complete developer platform and distribution engine for your rollup

Integrations for Rollups

new

Explore our marketplace of apps that you can integrate with your rollup.

Become an Integration Partner

Apply to integrate your apps and services with rollups built on Alchemy.

AA Infrastructure

Gas sponsorship, smart accounts & embedded wallets for EVM chains

Subgraphs

Deploy subgraphs on any EVM chain and index data 2x faster

Worldcoin

Alchemy and Worldcoin Announce Partnership to Grow World Chain

Add any of our products to your rollup or appchain

Contact sales

Solutions

Polygon

95% app growth

Optimism

Unleashing developer success

Treasure

Cut indexing times 50%

Royal

$400k engineering costs saved

OpenSea

$33B+ in ETH and Polygon sales

Slingshot

Notify transactions across all chains

Zapper

30% cost savings

Decentral Games

99.99% uptime

Slingshot

Notify transactions across all chains

View all case studies

Company

About us

Careers

Ventures

Startup Program

Newsroom

Newsletter

Blog

Events

Join the best team in web3

See careers

Resources

Get started

Documentation

Alchemy API Overview

Alchemy Quickstart Guide

SDK Quickstart

AA SDK Quickstart

Account Kit

Learn web3 development

Alchemy University

JavaScript for Ethereum

Learn Solidity

Ethereum Bootcamp

Alchemy University Discord

Web3 Tutorials

Resources

Status

Faucets

Support

Overviews

Dapp Store

Gwei Calculator

Pricing

Contact sales

Supernode

The web3 engine

NFT API

Build any NFT app

Token API

Token balances and metadata

Transfers API

Complete transaction history in one call

Transact

Send transactions 7.9x faster

Subgraphs

Speedy indexing for custom GraphQL APIs

Webhooks

Fast, consistent push notifications

Custom Webhooks

Real-time data for custom events

Smart Websockets

Blockchain connection for ongoing data

Transaction Simulation

Transaction previews for any use case

Account Kit

Embedded wallets, smart accounts

Gas Manager API

Sponsor gas, boost transactions

Bundler API

Batch transactions to save costs

Account Contracts

ERC-4337 smart contract accounts

Rollups

The complete developer platform and distribution engine for your rollup

Integrations for Rollups

new

Explore our marketplace of apps that you can integrate with your rollup.

Become an Integration Partner

Apply to integrate your apps and services with rollups built on Alchemy.

AA Infrastructure

Gas sponsorship, smart accounts & embedded wallets for EVM chains

Subgraphs

Deploy subgraphs on any EVM chain and index data 2x faster

Worldcoin

Alchemy and Worldcoin Announce Partnership to Grow World Chain

Add any of our products to your rollup or appchain

Contact sales

Polygon

95% app growth

Optimism

Unleashing developer success

Treasure

Cut indexing times 50%

Royal

$400k engineering costs saved

OpenSea

$33B+ in ETH and Polygon sales

Slingshot

Notify transactions across all chains

Zapper

30% cost savings

Decentral Games

99.99% uptime

Slingshot

Notify transactions across all chains

View all case studies

About us

Careers

Ventures

Startup Program

Newsroom

Newsletter

Blog

Events

Join the best team in web3

See careers

Get started

Documentation

Alchemy API Overview

Alchemy Quickstart Guide

SDK Quickstart

AA SDK Quickstart

Account Kit

Learn web3 development

Alchemy University

JavaScript for Ethereum

Learn Solidity

Ethereum Bootcamp

Alchemy University Discord

Web3 Tutorials

Resources

Status

Faucets

Support

Overviews

Dapp Store

Gwei Calculator

Pricing

Contact sales

Kunal Roy

Kunal Roy is a software engineer at Alchemy who previously built infrastructure at Google and enabled self driving technology at Cruise automation. In his spare time, Kunal makes Joe Exotic TikToks.

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Secure Your Nodes: Migrating From Parity To Geth

One of the two primary providers of Ethereum node software has deprecated support for their client. This 8-step guide shares best practices for migrating your nodes to Geth.