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Documentation Index

Fetch the complete documentation index at: https://developers.zerion.io/llms.txt

Use this file to discover all available pages before exploring further.

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Get started

Get your API key

Generate a free key from the dashboard.

API Reference

Explore all API endpoints.

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Use Zerion API with Agents

The Zerion CLI is the fastest way for agents to query onchain data. Any assistant that can run shell commands can read wallets, tokens, and positions without writing API integration code. One-shot setup — installs the CLI globally, configures your API key, and adds skills across all detected coding agents: 
npx -y zerion-cli init -y --browser
--browser opens dashboard.zerion.io so you can grab an API key and paste it back. See Zerion CLI for manual install and authentication options.
Or use the MCP Server to connect Zerion directly to Claude, Cursor, Windsurf, VS Code, and other AI tools. For agents that need to pay per-request without managing API keys, see x402 or MPP payments.

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Build onchain apps

Fetch a wallet’s total portfolio value and break it down by individual token positions across all supported chains.

View recipe →
Zerion wallet portfolio view

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Why Zerion API

Zerion API provides endpoints for wallet data, token analytics, DeFi positions, and real-time webhooks across EVM chains and Solana. These endpoints abstract away multi-chain complexity and deliver clean, normalized data ready to power your application.

Always fresh

Data updates within milliseconds of new blocks. No stale reads, no polling delays.

Battle-tested

Powers the Zerion app used by millions. The same infrastructure backs your project.

Unified schema

Normalized responses across all chains. No per-chain parsing or custom logic needed.

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Resources

Quickstart

Make your first request in under 5 minutes.

Supported Blockchains

See every chain the API covers.

Recipes

Step-by-step guides for common use cases.

Changelogs

Latest updates and new features.