INFURA Ethereum

API

Scalable API for Ethereum mainnet & testnet interaction

Overview

INFURA Ethereum API enables developers to interact with Ethereum mainnet and testnets (Goerli, Sepolia, etc.) without running a full node. It supports JSON-RPC 2.0 endpoints for core operations: sending transactions, querying block details, fetching smart contract state, and subscribing to event logs. Responses are JSON-formatted. Use cases include building dApps, crypto wallets, DeFi platforms, NFT marketplaces, or blockchain analytics tools—streamlining infrastructure management so teams focus on application logic.

Example Integration (JavaScript)

script.js JS


fetch('https://infura.io/product/ethereum')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

JSON-RPC 2.0 compliant
Multi-network access (mainnet + testnets)
No full node deployment required
High availability & scalability
Real-time event subscriptions

Frequently Asked Questions

? Is INFURA Ethereum free to use?

Yes, it offers a free tier with limited requests; paid plans are available for higher usage needs.

? Does it require an API Key?

Yes, you need to sign up for an INFURA account to obtain an API key for authentication.

? What is the response format?

Responses follow the JSON-RPC 2.0 specification, returning JSON-formatted data for all requests.

Top Alternatives

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QuickNode Ethereum API Search Google

Tool Info

Pricing Freemium

Category Cryptocurrency

Platform Public API

Pros

⊕ Eliminates full node maintenance
⊕ Reliable infrastructure with high uptime
⊕ Supports testnets for development testing
⊕ Easy integration via standard JSON-RPC methods

Cons

⊖ Free tier has request limits
⊖ Requires API key authentication
⊖ Paid plans needed for high-volume usage
⊖ Limited node configuration control vs self-hosted