

Build an ecosystem optimized for your goals while opening up new revenue streams.
USDX, Core API and Rarible each address unique challenges in the web3 ecosystem, offering complementary strengths for builders. A simple, experimental, and low-cost software-defined SSB and CW transceiver for QRP HF radio communications. 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 | Continuous tuning across 160m-10m bands, DSP filters and noise reduction, Software-based full Break-In VOX | 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 | Infrastructure 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 |
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