Alchemy Ethereum

API

Ethereum Node-as-a-Service for DApps & Blockchain Developers

Overview

Alchemy Ethereum provides REST and WebSocket endpoints for interacting with Ethereum mainnet and testnets (Goerli, Sepolia). It eliminates node management overhead, offering JSON responses for REST queries and real-time event streaming via WebSockets. Use cases include building decentralized applications (DApps), querying transaction/block data, executing smart contract calls, sending signed transactions, and monitoring on-chain events with high reliability.

Example Integration (JavaScript)

script.js JS


fetch('https://docs.alchemy.com/alchemy/')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

REST & WebSocket Endpoints
JSON Support
Multi-Network Compatibility
Real-Time Event Streaming
API Key Authentication
High Uptime

Frequently Asked Questions

? Is Alchemy Ethereum free to use?

Yes, Alchemy offers a free tier with limited requests and features. Paid plans are available for higher usage and advanced capabilities like dedicated nodes.

? Does it require an API Key?

Yes, you must sign up for an Alchemy account to obtain an API key for authenticating all requests.

? What is the response format?

REST endpoints return structured JSON responses. WebSocket connections deliver real-time event data in JSON format for on-chain updates.

Top Alternatives

Infura Ethereum API Search Google

QuickNode Ethereum API Search Google

Moralis Ethereum API Search Google

Tool Info

Pricing Freemium

Category Cryptocurrency

Platform Public API

Pros

⊕ No node setup required
⊕ Scalable for high-traffic DApps
⊕ Detailed documentation
⊕ Advanced debugging tools

Cons

⊖ Rate limits on free tier
⊖ Paid plans needed for enterprise usage
⊖ Requires account registration for API key