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The Ultimate
Onchain Data API

Portfolio data across tokens, DeFi, and NFTs
Human-readable onchain activity feeds
Live & Historical prices for every token
Built for humans and AI Agents
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Trusted by great builders

Token Prices & Charts

A single endpoint to access real-time token prices, historical data, holders, and latest swaps across 45+ chains.

Instant price updates
Historical charts
Market data
Holder information
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Portfolio Data

Access complete onchain portfolio data with a single query. Get comprehensive balances across tokens, apps, 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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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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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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Farcaster Data

Access onchain data for Farcaster users across 50+ chains in a single API.

Onchain portfolios for every user
Transaction history
Profile metadata & connected addresses
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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.

46
Chains Supported
3.8M+
Tokens with Historical Prices
3.9M+
DeFi Tokens (e.g., LP tokens)
67 Billion
Human-readable Transactions

Onchain information is disorganized and unreadable.

The quantity of onchain applications is increasing exponentially — no centralized entity will be able to organize everything.
To solve this problem, an open network of curators contribute to the Zapper Protocol — transforming onchain data and empowering builders with an easy to use API.

An open interpretation layer, built by you.

We've created powerful tools allowing anyone to easily contribute and make blockchains human-readable. No coding is required.

Transaction Interpretation

Transaction Interpreters are used on onchain transactions to translate them into human-readable output, and augment them with contextual, and often off-chain, information.

Position Interpretation

App Token Interpreters are used to index app-centric token balances for users. This can be loans, deposits, pools, etc... The majority of these tokens do not have a market price; rather, they are priced based on the tokens they are redeemable for.

Coming Soon

Powered by $ZAP

The ZAP token is central to the protocol 一 serving as an incentive to interpret onchain information and as a payment for accessing its data.

Be a part of the movement

Join our community, and help us make blockchains readable to everyone!
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