History API

Track blockchain transactions.

Latency 50.8 ms
Supported Chains 12
Abstract illustration for 1inch API product features

Rapid, clear transaction insights

Understand every blockchain transaction with rapid access to organized data.
Natural language data Scam protection Comprehensive coverage
Transaction data is clearly displayed in a human-readable format.

History API supports 12 chains.

Ethereum
BNB Chain
Polygon
Optimism
Arbitrum
Gnosis
Avalanche
ZKsync
Base
Linea
Unichain
Sonic

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Documentation

Get started quickly

Learn how to use the APIs with docs, guides, and code snippets.
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Authentication

API Key or OAuth 2.1

Authenticate with a simple API key, or choose OAuth 2.1 with PKCE for rotating tokens, browser-based consent, and zero shared secrets.
See auth docs

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Support

Answers to common questions and 24/7 support regardless of subscription.

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