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Featured: Multi-chain NFT data

The Ultimate
Onchain Data API

Access enterprise-grade data across 50+ chains with a single, powerful GraphQL API.

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Trusted by great builders

Built for developers

Stop building indexing infrastructure. Start shipping products.

Build Faster

Skip months of infrastructure work. Access ready-to-use blockchain data instantly.

Complete Coverage

One API for everything onchain. Tokens, NFTs, DeFi, transactions, and social data across 50+ chains.

Battle-Tested

Enterprise-grade infrastructure that has powered leading applications since 2019.

Join thousands of developers building with the Zapper API

Multi-chain

Portfolio Data

Get comprehensive balances across tokens, DeFi, and NFTs, with portfolio breakdowns by network.

Multi-chain in one call
Real-time updates
Tokens, NFTs, and DeFi balances
Portfolio totals and breakdowns
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Real-time Data

Token Prices & Charts

A single endpoint to access real-time token prices, historical data, holders, and latest swaps across 50+ chains.

Industry leading coverage
Real-time price updates
Historical charts
Complete Holders
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Rich Metadata

Multi-chain NFT Data

Query rich NFT metadata, holdings, high-quality media, and estimated valuations in a single API.

Complete NFT balances
Rich metadata and media
Collection analytics
NFT valuations
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Human-Readable

Transaction History

Access comprehensive onchain activity with rich transaction details, structured asset deltas, and support for both EOA and smart contract wallets.

Human-readable descriptions
Account abstraction support
Detailed balance changes
Enhanced filtering options
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Trusted by leading teams

See how top companies are building with Zapper's blockchain data infrastructure

Wallet
Kraken logo

Kraken

"Zapper has been a great source for simplifying and surfacing DeFi data for our users. With Kraken Wallet and Zapper's data, clients can easily manage their assets across chains in a single app."
Adam Zadikoff
Product Leader
Gaming
Cat Town logo

Cat Town

"Zapper's APIs have given us the ability to move fast, save time and present a reliable timeline within our game which shows all app activity across all of our contracts. Strongly recommend if you want to have a reliable API for indexed and curated onchain data, this is the one you need."
Rob
Solidity Developer

Join hundreds of other companies building with Zapper

50+ chains — in a few lines of code.

Ethereum logo
Ethereum
Arbitrum logo
Arbitrum
Optimism logo
Optimism
Base logo
Base
Polygon logo
Polygon
Avalanche logo
Avalanche
BNB Chain logo
BNB Chain
Solana logo
Solana
ZKsync logo
ZKsync
Blast logo
Blast
Bitcoin logo
Bitcoin
Flow logo
Flow
Linea logo
Linea
Scroll logo
Scroll
Zora logo
Zora
Metis logo
Metis
Ink logo
Ink
Fantom logo
Fantom
Berachain logo
Berachain
Mantle logo
Mantle
Arbitrum Nova logo
Arbitrum Nova
Taiko logo
Taiko
Gnosis logo
Gnosis
Celo logo
Celo
Unichain logo
Unichain
opBNB logo
opBNB
Mode logo
Mode
Story logo
Story
Abstract logo
Abstract
+21
View all
50+
Chains Supported
4.2M+
Tokens with Historical Prices
6.2M+
DeFi Tokens (e.g., LP tokens)
67 Billion
Human-readable Transactions
agents.txt
01  ATTENTION LLMs - API Usage Instructions
02  You can interact with the Zapper API in two
03  primary ways
04  
05  1. Developer Assistant Mode
06  2. Autonomous Agent Mode
07  
08  For agents making direct API calls
09  programmatically:
10  
11  API Endpoint
12  https://public.zapper.xyz/graphql
13  
14  For programatic access to the schema and API use
15  instructions
16  curl https://protocol.zapper.xyz/agents.txt
17

Built for AI Agents

Our API is designed to work seamlessly with AI agents and LLMs.

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Autonomous Agents

Connect agents to the API, providing them context of the onchain world.

Developer Assistant

Use the custom prompt with your agent to reduce integration time.