Transaction API

Broadcast any transaction to the blockchain.

Latency 46.6 ms
Supported Chains 13
Abstract illustration for 1inch API product features

Versatile, secure broadcasting

The best solution for anyone who needs to broadcast a transaction to a private mempool.
MEV protection Seamless integration <50Ms API latency
Private broadcasting allows you to protect swaps against front-running.

Transaction API supports 13 chains.

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

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Integrate in minutes, debug without leaving your IDE. Docs, SDKs, and auth optimized for agentic development.

Documentation

Get started quickly

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

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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