DeBank OpenAPI (Portfolio API)

Multi-Chain On-Chain Data API

DeBank OpenAPI is a real-time REST API suite designed for Web3 developers and teams that need programmatic access to on-chain portfolio data across all major EVM-compatible blockchains. Available via DeBank Cloud (cloud.debank.com), the API transforms raw on-chain data into structured, queryable formats across 150+ blockchain networks including Ethereum, BSC, Polygon, Arbitrum, Optimism, Avalanche, and many more.

API Endpoint Categories

• User APIs: Retrieve a wallet's total net worth across all supported chains, token lists, DeFi protocol portfolio positions, and historical data — supporting any EVM address.
• Wallet APIs: Pre-execute transactions to forecast asset changes and gas consumption before submission; explain and validate transactions for potential issues.
• Chain APIs: Retrieve metadata for all supported blockchain networks.
• Protocol APIs: Query DeFi protocol data including TVL, supported chains, and position details.
• Token APIs: Real-time token pricing, metadata, and verification status.
• Pool APIs: Access liquidity pool data across supported protocols.

Pricing and Access

The API uses a compute unit (CU) pricing model: 1 million units / 200 USDC. Volume discounts are available (20% off for purchases of $100,000+), with custom pricing for $1M+ purchases. Enterprise rate limits reach up to 100 requests per second on the Pro plan with higher limits available on request.

Use Cases

Ideal for DeFi dashboards, portfolio management tools, analytics platforms, wallets, trading bots, tax calculation tools, and any application requiring structured, real-time on-chain financial data across multiple chains.