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 days ago (2026-11-04 15:20 UTC)MIT