Question 1

How much does the Web3 Identity API cost?

Accepted Answer

The API offers a free tier with 100 calls per day (200 with SIWE authentication). Beyond the free tier, requests cost $0.001-$0.02 each, paid via x402 micropayments in USDC on Base network.

Question 2

What data can I access through this API?

Accepted Answer

The API provides 966 endpoints covering ENS resolution, Farcaster profiles, DeFi analytics (TVL, yields), token prices, wallet balances, NFT data, and multi-chain blockchain information.

Question 3

Is there an SDK available?

Accepted Answer

Yes, install the official SDK with: npm install @atv-eth/x402-sdk. The SDK handles x402 payments and provides TypeScript support.