

Build an ecosystem optimized for your goals while opening up new revenue streams.
Contracts Library, Core API and Rarible each address unique challenges in the web3 ecosystem, offering complementary strengths for builders. A library of modular, reusable, and secure smart contracts for Ethereum and EVM-compatible blockchains. A Document Object Model for Web APIs designed to simplify API consumption and integration. Rarible API is a fast, unified NFT API infrastructure providing real-time data and executable market features across Ethereum, Base, Polygon, and more than 10 other chains. Together, these tools serve different but overlapping user needs, making them valuable components in a modern web3 development stack.
| At a Glance | |||
| Composability | |||
| Cross-Chain | |||
| Customizability | |||
| Developer Support | |||
| Ease of Integration | |||
| Performance | |||
| Key Features | |||
| Core Capabilities | ERC Token Implementations, Access Control Utilities, Upgradeable Contracts Support, Contracts Wizard | Dynamic API Discovery, Open Source Repositories | MCP Servers for Market Data, Full-Text Fuzzy Search, SDK with Ready-Made JS Library |
| Chain Support | +40 | +10 | |
| Best For | DeFi Developers, NFT Platform Developers | Infrastructure Developers, DeFi Developers | NFT Platform Developers, DeFi Developers |
| Pricing | |||
| Free Tier | Open Source | — | Free |
| Paid Features | — | — | 1 paid tiers |
| Custom Plans | — | — | Enterprise plans |
Explore web3 competitors and apps like Contracts Library.



