Build anything onchain

Read and write to 100+ blockchains, query indexed data, ship smart wallets, and build with AI, all through one API key.

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Chains

Standard JSON-RPC and chain-specific APIs across 100+ chains.

Data

Access complete blockchain data through one unified API that grows with you.

Wallets

Simple APIs to send gasless transactions with advanced smart wallet features.

Build with AI

Agent skills, MCP server, and AI tooling for building onchain apps.

Build with AI

Agent skills, an MCP server, and CLI tooling that let AI assistants and agents build on Alchemy.

Overview

Everything Alchemy offers for AI-first workflows.

Agent Skills

Teach coding agents to use Alchemy APIs correctly.

MCP Server

Give AI assistants live access to 100+ chains.

Alchemy CLI

Query chains and manage your apps from the terminal.

Chain APIs

Low-level access to standard JSON-RPC methods for reading and writing blockchain data, plus companion APIs for streaming and inspection.

API Overview

Read & write interface for every supported blockchain.

WebSockets

Subscribe to pending transactions, log events, new blocks, and more.

Trace API

Get insights into transaction processing and onchain activity.

Debug API

Non-standard RPC methods for inspecting and debugging transactions.

Data APIs

Structured, indexed data that would be difficult to get via RPC alone, optimized for dashboards and data-heavy applications.

Portfolio API

A complete view of a wallet across tokens and NFTs in one request.

Transfers API

Historical transactions for any address.

Prices API

Real-time and historical token prices.

NFT API

Find, verify, and display NFTs across major chains.

Webhooks

Get notified of transfers, transactions, and balance changes.

Simulation API

Preview a transaction's effects before you send it.

Wallets

Everything you need for zero-friction user flows, from sign-up to checkout, using smart contract accounts.

Smart Wallets

Account abstraction infrastructure, end to end.

Bundler API

Submit and manage user operations.

Gas Manager

Sponsor gas so your users never need ETH.

Transaction APIs

Send transactions with smart accounts.

Tools & Resources

Pricing, chain support, and the guides to get you productive.

Pricing plans

Plans, compute units, and how usage is measured.

Feature support by chain

Check which APIs and endpoints each chain supports.

Quickstart guides

Create a key and make your first request in minutes.

Popular use cases

Blockchain basics

Get started by learning how to connect your app to Ethereum using Alchemy's JSON-RPC API.

Get started

Sponsor gas

Send gasless transactions on EVM and Solana or allow users to pay with ERC-20 tokens for seamless transactions

Start tutorial

Real-time notifications via webhooks

Receive fast and reliable HTTP POST requests for onchain events across 80+ chains. No polling required.

View quickstart

Send reliable transactions

Built-in retries, gas optimization, and status tracking so transactions land onchain every time

Start tutorial

Onchain events subscriptions

Learn to subscribe to pending transactions, log events, new blocks and more using WebSockets across chains.

View quickstart

Upgrade to EIP-7702

Enable existing EOAs to benefit from batching actions, sponsoring transactions, and more.

Learn more