Available Now

Hanzo Indexer

Query blockchain data with GraphQL

Index and query on-chain data at scale. Deploy custom subgraphs, access real-time indexed data, and build powerful blockchain analytics—all through a simple GraphQL API.

GraphQL API

Query indexed blockchain data with a powerful, flexible GraphQL interface.

Custom Subgraphs

Deploy your own indexing logic with custom subgraph definitions.

Real-Time Indexing

Data indexed within seconds of on-chain confirmation.

Historical Aggregation

Pre-computed aggregations and time-series data for analytics.

Back to Web3 Overview

Get Your API Key

Start building in under 5 minutes

99.999%
Uptime
<50ms
Latency
100+
Chains

No credit card required. Free tier includes 300M compute units/month.

Trusted by developers building:

DeFiNFTsPaymentsGamingAI Agents

Key Capabilities

Everything you need, nothing you don't.

GraphQL API

Query indexed blockchain data with a powerful, flexible GraphQL interface.

Custom Subgraphs

Deploy your own indexing logic with custom subgraph definitions.

Real-Time Indexing

Data indexed within seconds of on-chain confirmation.

Historical Aggregation

Pre-computed aggregations and time-series data for analytics.

Cross-Chain Unification

Unified data model across multiple chains for easy cross-chain queries.

Webhooks

Push notifications for indexed events to your backend.

Token & Portfolio APIs

Pre-built APIs for token balances, transfers, and portfolio tracking.

Analytics Dashboard

Monitor indexing status, query performance, and data freshness.

Simple to Integrate

Get started with just a few lines of code. SDKs for every language.

IndexedContract.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "@hanzo/indexer/IHanzoIndexer.sol";

/// @title IndexedContract - Emit events optimized for Hanzo Indexer
/// @notice Structured events for efficient GraphQL querying
contract IndexedContract {
    // Indexed events for efficient GraphQL queries
    event Transfer(
        address indexed from,
        address indexed to,
        uint256 indexed tokenId,
        uint256 amount,
        uint256 timestamp
    );

    event Swap(
        address indexed pair,
        address indexed sender,
        uint256 amount0In,
        uint256 amount1In,
        uint256 amount0Out,
        uint256 amount1Out,
        uint256 indexed blockNumber
    );

    event PriceUpdate(
        address indexed token,
        uint256 price,
        uint256 indexed timestamp
    );

    // Log transfer for indexing
    function logTransfer(
        address from,
        address to,
        uint256 tokenId,
        uint256 amount
    ) external {
        emit Transfer(from, to, tokenId, amount, block.timestamp);
    }

    // Log swap for DEX indexing
    function logSwap(
        address pair,
        uint256 amount0In,
        uint256 amount1In,
        uint256 amount0Out,
        uint256 amount1Out
    ) external {
        emit Swap(
            pair,
            msg.sender,
            amount0In,
            amount1In,
            amount0Out,
            amount1Out,
            block.number
        );
    }

    // Log price for oracle indexing
    function logPriceUpdate(address token, uint256 price) external {
        emit PriceUpdate(token, price, block.timestamp);
    }
}

Built For

DeFi Dashboards

Build trading dashboards with real-time price, volume, and liquidity data from DEXs.

NFT Analytics

Track NFT sales, floor prices, holder distributions, and collection statistics.

Token Explorers

Create token explorers with transfer history, holder analytics, and supply metrics.

Protocol Monitoring

Monitor protocol health, TVL, user activity, and governance participation.

Supported Chains

Lux
Ethereum
Polygon
Arbitrum
Optimism
Base
Avalanche
BNB Chain

Start Building with Hanzo Indexer

Get your free API key and ship your first request in under 5 minutes. No credit card required.