19 pay-per-call APIs for AI agents via x402 USDC micropayments on Base — prediction markets (Polymarket, Kalshi), DeFi/crypto data, multi-chain on-chain reads across 5 EVM chains, live weather, and real-time web search. No API key or signup — from $0.001/call. npx -y microtap-mcp
20 pay-per-call utility tools for AI agents via x402 USDC micropayments on Base. Screenshots, OCR, PDF, web
scraping, weather, forex rates, crypto/stock prices, DNS, geocoding, translation, and more. $0.001–$0.008 per
call. No API keys, no signup.