Alchemy
Alchemy is a Web3 developer platform providing powerful APIs, SDKs, and infrastructure tools to build and scale blockchain applications. Supporting Ethereum, Polygon, and other EVM-compatible networks, Alchemy powers production dApps with reliable node infrastructure, enhanced APIs for token data, asset transfers, NFTs, and ERC-4337 Account Abstraction tools including gas sponsorship (Gas Manager) and smart account bundling.
APIs
Alchemy Gas Manager API
The Alchemy Gas Manager API enables developers to sponsor gas fees for end users via the ERC-4337 Account Abstraction standard. Manage sponsorship policies with per-user spend l...
Alchemy Token API
The Alchemy Token API provides comprehensive access to ERC-20 token data across EVM-compatible networks. Retrieve token balances by wallet address, token metadata (name, symbol,...
Alchemy Transfers API
The Alchemy Transfers API provides access to historical on-chain transfer data across EVM-compatible networks. Query asset transfers by address, block range, and transfer catego...
Alchemy Bundler API
The Alchemy Bundler API implements the ERC-4337 Account Abstraction bundler standard, allowing UserOperations to be submitted to the blockchain. Developers can send, estimate, a...
Capabilities
Alchemy Gasless Transaction Management
Capability for managing gasless transaction sponsorship using ERC-4337 Account Abstraction. Combines the Gas Manager API for policy creation and management with paymaster sponso...
Run with NaftikoAlchemy Web3 Wallet Portfolio
Unified capability for building Web3 wallet and portfolio applications. Combines the Token API for balance and metadata queries with the Transfers API for transaction history. D...
Run with NaftikoFeatures
Query token data and transfers across Ethereum, Polygon, and other EVM-compatible networks.
Full support for ERC-4337 with bundler, paymaster (Gas Manager), and smart account APIs.
Sponsor gas fees for end users via Gas Manager policies with spend limits and network rules.
Real-time ERC-20 token balances and metadata including name, symbol, decimals, and logo.
Historical on-chain transfer data for ETH, ERC-20, ERC-721, and ERC-1155 assets.
Standard Ethereum JSON-RPC interface with Alchemy-enhanced methods for additional data.
Real-time blockchain event notifications via webhooks for address activity and mined transactions.
Use Cases
Build EVM wallets with real-time token balances, transaction history, and NFT support.
Track multi-asset portfolios across EVM networks with accurate token pricing and balances.
Abstract gas fees from end users so they can interact with dApps without holding ETH.
Query ERC-721 and ERC-1155 transfer history for NFT ownership tracking and provenance.
Analyze on-chain transfer patterns, wallet activity, and token flow across EVM networks.
Integrations
Native support for Ethereum mainnet and testnets.
Full API support for Polygon (MATIC) mainnet and Mumbai testnet.
Works with any ERC-4337 compatible bundler for UserOperation submission.
Integration with MetaMask wallet for Web3 connection management.
Developer toolchain integration for local testing and deployment.