What Is the Alchemy Web3 Platform? A Complete Guide to Its Infrastructure, APIs, and Ecosystem

In the early days, developers who wanted to build a DApp had to run blockchain nodes themselves, sync on-chain data, and maintain servers and database systems over the long term. This approach was not only costly, but also made application development and operations far more complex. As public chain ecosystems such as Ethereum, Polygon, Arbitrum, and Solana expanded rapidly, Web3 projects developed a growing need for stable RPC services, real-time on-chain data, and developer tools. This demand helped drive the rise of Web3 infrastructure platforms.

In today’s Web3 infrastructure sector, Alchemy has become one of the most representative developer platforms. Its services cover node access, on-chain data indexing, real-time notifications, account abstraction, smart wallets, and several other areas, and it is widely used across DeFi, NFT, GameFi, and on-chain social applications.

What Is Alchemy Web3?

Alchemy Web3 is a blockchain infrastructure platform built for developers. It mainly provides node services, on-chain data APIs, smart wallets, and developer tools to help teams build Web3 applications. Developers can access multiple networks, including Ethereum, Polygon, Base, Arbitrum, Optimism, and Solana, through APIs and SDKs without having to maintain blockchain nodes themselves.

Through hosted infrastructure and enhanced APIs, Alchemy lowers the barrier to development and allows developers to focus more on product design and application logic. From an industry perspective, Alchemy belongs to the Web3 Infra, or infrastructure, sector. Alongside platforms such as Infura, QuickNode, and Chainstack, it forms a “middle layer” within the blockchain ecosystem. These platforms connect underlying blockchain networks with the application layer above them.

Why Do Web3 Applications Need Infrastructure Platforms?

Blockchain networks themselves are responsible for data consensus and transaction execution. But when developers build DApps, they also need to handle data reads, node synchronization, real-time monitoring, transaction broadcasting, and other tasks.

If a team runs full nodes directly, it will face the following challenges:

Alchemy provides unified APIs and hosted services, allowing developers to access on-chain data, send transactions, and monitor events in real time more efficiently.

What Are Alchemy’s Core Products?

Alchemy’s product system is mainly built around “node services + data APIs + developer tools.”

Supernode

Supernode is Alchemy’s enhanced RPC node service. It supports networks such as Ethereum, Polygon, Arbitrum, Optimism, Base, and Solana. Developers can access on-chain data and send transactions through standard JSON-RPC interfaces.

NFT API

NFT API is used to read NFT data, including NFT metadata, ownership information, collection data, and transfer records. Compared with traditional on-chain query methods, NFT API can handle NFT application scenarios more efficiently.

Transfers API

Transfers API is used to track asset transfer records for wallet addresses, including standards such as ERC-20, ERC-721, and ERC-1155.

Webhooks

Webhooks can automatically send notifications when on-chain events occur. For example, when a wallet receives assets, a transaction is confirmed, or an NFT is transferred, the system can push data in real time.

Account Kit

Account Kit is Alchemy’s developer tool for account abstraction, or AA. It supports features such as smart accounts, Gas Sponsorship, and Embedded Wallet.

How Does Alchemy Web3 Work?

Alchemy’s workflow is essentially “user request → API service → blockchain node → data returned.”

When a user opens a DApp, the application will usually request on-chain data through the Alchemy API, such as wallet balances, NFT information, or transaction status. Alchemy’s servers then send the request to the corresponding blockchain node and return the processed data result.

Its internal process usually includes:

1. The user request enters the API gateway

2. The request is routed to the corresponding blockchain node

3. The system reads raw on-chain data

4. The data indexing and caching systems process the data

5. The API returns structured results

6. The DApp displays the data on the frontend

Compared with direct access to raw nodes, Alchemy preprocesses and indexes on-chain data, so queries are usually faster.

Which Blockchain Networks Does Alchemy Support?

Alchemy currently supports several major blockchains and Layer 2 networks, including:

• Ethereum

• Polygon

• Arbitrum

• Optimism

• Base

• zkSync

• Solana

• Starknet

As modular blockchains and the Rollup ecosystem continue to develop, Alchemy is also gradually expanding support for more Layer 2 networks and Appchains.

This multichain architecture allows developers to manage different networks through a unified interface, reducing the complexity of cross-chain development.

What Is Alchemy Account Kit?

Alchemy Account Kit is a set of developer tools built for account abstraction, or AA, based on the ERC-4337 standard.

Traditional wallets rely on private keys and seed phrases, while account abstraction allows wallets to gain more programmable capabilities, such as:

• Gas Sponsorship

• Social login

• Multisignature authorization

• Automated transactions

• Payment recovery mechanisms

Through Account Kit, developers can create smart wallets that do not require users to understand gas fees or private key management, improving the overall Web3 user experience.

Account abstraction is widely seen as one of the key directions for driving large-scale Web3 user adoption, which is why it has also become one of Alchemy’s current areas of focus.

How Is Alchemy Different from Infura?

Alchemy and Infura are both Web3 infrastructure platforms, but they differ somewhat in product direction.

Alchemy places greater emphasis on developer experience and enhanced APIs, while Infura has long focused on basic node services.

What Are Alchemy’s Strengths and Limitations?

Alchemy’s main strengths include:

• Lowering the barrier to Web3 development

• Providing stable RPC services

• Offering strong multichain compatibility

• Delivering rich data API functionality

• Supporting the account abstraction ecosystem

However, it also has certain limitations:

• Centralization issues in Web3 infrastructure

• Heavy reliance by many projects on third-party services

• Commercial restrictions on some advanced features

• Infrastructure platforms may become single points of risk within the ecosystem

The Web3 industry is still exploring more decentralized infrastructure architectures, such as decentralized RPC networks and modular data layers.

Summary

Alchemy Web3 is one of the most representative blockchain development infrastructure platforms today. It provides developers with node services, on-chain data APIs, account abstraction, smart wallets, and other capabilities. Its emergence has reduced the development and operational complexity of Web3 applications, enabling development teams to build DApps more efficiently.

FAQs

Which Public Chains Does Alchemy Support?

Alchemy supports multiple networks, including Ethereum, Polygon, Arbitrum, Optimism, Base, Solana, and zkSync.

What Is an RPC Node?

An RPC node is the data interface between a blockchain network and an application. It is used to read on-chain data and send transactions.

How Is Alchemy Different from Infura?

Alchemy places greater emphasis on enhanced APIs and developer tools, while Infura is more focused on basic node services.

What Is Account Abstraction, or AA?

Account abstraction is a mechanism that gives wallets programmable capabilities. It can support features such as Gas Sponsorship, social login, and smart accounts.

Why Do Web3 Projects Need Alchemy?

Alchemy helps developers avoid maintaining nodes and servers themselves, reducing development costs and improving application stability.