Etherscan API

etherscan.io

Provides programmatic access to Ethereum and 60+ EVM blockchain data including transactions, blocks, addresses, tokens, and smart contracts through a unified multichain API.

The Etherscan API API uses api key authentication; has freemium pricing; offers a free tier (Free plan: $0, 3 calls/second, up to 100,000 API calls/day, selected chains (90% coverage), community endpoints only, attribution required); rate limits: Free: 3 calls/sec, 100k/day; Lite: 5 calls/sec; Standard: 10 calls/sec, 200k/day; Advanced: 20 calls/sec, 500k/day; Professional/Pro Plus: 30 calls/sec, up to 1.5M/day. Verified 2026-07-08 with per-field source links.

Crypto & Blockchain Verified 2026-07-08 medium confidence

Base URL

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no source

Auth

api_key

etherscan.io ↗

Free tier

Free plan: $0, 3 calls/second, up to 100,000 API calls/day, selected chains (90% coverage), community endpoints only, attribution required

etherscan.io ↗

Pricing model

freemium

etherscan.io ↗

Pricing

Free $0; Lite $49/mo; Standard $199/mo; Advanced $299/mo; Professional $399/mo; Pro Plus $899/mo; Metadata Enterprise and Dedicated Plan contact us. Discounts for quarterly (10%) and yearly (15%).

etherscan.io ↗

Rate limits

Free: 3 calls/sec, 100k/day; Lite: 5 calls/sec; Standard: 10 calls/sec, 200k/day; Advanced: 20 calls/sec, 500k/day; Professional/Pro Plus: 30 calls/sec, up to 1.5M/day

etherscan.io ↗

OpenAPI spec

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no source

MCP server

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no source