0x Swap API is a Web3 API service for blockchain data, contract interactions, and application backends. It helps Web3 teams work with blockchain applications, smart contracts, wallets, data, and onchain infrastructure using a focused product or developer workflow.

Use it for:

• Fetch blockchain and token data.
• Power application backends and dashboards.
• Reduce custom indexing work.
• Connect products to onchain activity.

Best fit: teams that need managed APIs for Web3 product features.