Balance API

Show balances and allowances at a glance.

Latency 73.6 ms
Supported Chains 13
Abstract illustration for 1inch API product features

Get reliable endpoint access on 10+ networks.

Optimize for uptime, speed and cross-chain operation.
Multiple chains Enterprise scale Unified access
Query balances across 13+ L1 & L2 networks through a single REST endpoint—no bridges or wrappers needed.

Balance 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.
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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.

Get help

Support

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

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