MCP Usage MeteringPayments & BillingDeveloper Toolsthrottler300Alicense-Not gradedqualityCmaintenanceEnables MCP server authors to record one billable usage event per tool call idempotently and preview invoices, with keyless free calls and pay-per-event pricing without signup or API keys. Updated 5 hours ago (2026-11-03 23:09 UTC)MIT