China & global market data for AI agents — real-time Chinese internet pulse (Weibo/Baidu/Douyin), structured China market news & events, industrial-theme momentum, quant signals across A-share/HK/US equities, BTC directional signal, crypto microstructure, and tactical ETF allocation. Plus stateless portfolio optimizer. x402 USDC on Base or Solana, no API key.
TANG has 1 live API on PayAPI Market with 14 endpoints in total, in Finance: StockWaves.
Are TANG's APIs verified?
Not yet. TANG's listings are live and answer an x402 payment challenge, but PayAPI Market has not paid for a call to them, so none carries a settlement-verified badge.
How do I pay for TANG's APIs?
Per request, in USDC, over the x402 protocol. An agent calls the endpoint, receives HTTP 402 with the price and wallet, pays and retries. There is no API key, account or subscription, and TANG keeps 100% of each payment.