"Spring Boot" matching MCP connectors:
GET /v1/connectors — MCP directory API referenceMatching Connector Tools:
25 deterministic data, repository, API, and public-web utilities with Base-USDC x402 pay-per-call settlement.
AML/compliance address screening for AI agent payments — free tools, no API key.
Paid x402 MCP utilities for Base-USDC balances, blocks, gas, HTTPS headers, and agent profile bios.
Coinbase - 20 tools for market data, order books, and trading pairs
Hyperliquid - 2 tools for perpetuals, options, and position data
Coinmarketcap - 30 tools for data, metrics, and on-chain analytics
337 MCP tools with x402 micropayments on Base. $0.001/call. No signup, no API keys.
Coingecko - 36 tools for data, metrics, and on-chain analytics
Etherscan Api - 71 tools for data, metrics, and on-chain analytics
Binance - 340 tools for market data, order books, and trading pairs
