spendshieldSecurityPayments & BillingAutonomous Agentsfelixpg13-glitchAlicenseAqualityBmaintenanceAI payment guardrails for Python & MCP: spend-capped agent identity (KYA), dry-run/budget/approval gates, prompt-injection defense, encrypted secret vault. Updated 15 hours ago (2026-08-31 13:02 UTC)5MIT