MCP connectors by com.headlessoracle

Ed25519-signed market-state receipts for 28 global exchanges. Pre-trade verification gate for autonomous financial agents. 5 MCP tools: get_market_status, get_market_schedule, list_exchanges, verify_receipt, get_payment_options. Fail-closed: UNKNOWN = CLOSED. x402 micropayments on Base mainnet ($0.001 USDC/call). 60-second TTL signed receipts.