basil & EU VAT Diagnostic ToolsRun deterministic, stateless compliance and billing diagnostics directly in your browser or via JSON REST & Model Context Protocol (MCP) endpoints — zero login, zero database persistence, and zero card data required. Updated .
2025-03-31.basil Entitlement & Ghost-Usage AuditorTests multi-subscription accounts where current_period_end moved from the subscription root into items.data[i].current_period_end, catching silent unpaid API/AI token bleed and preventing false lockouts during active dunning grace windows.
Evaluates whether a disputed Stripe charge satisfies Visa CE 3.0 (2+ undisputed prior charges 120d–365d old with IP/Device correlation) and previews an 18,000-char submit: false evidence draft that preserves existing merchant notes.
XI) VIES VAT Batch ValidatorNormalizes Greek GR → EL and Northern Ireland XI VAT numbers, checks 28 member-state regex rules, and detects European Commission VIES HTTP 200 OK soft-failure outage wrappers (MS_UNAVAILABLE).
Simulates 5 wholesale payment-terms presets (deposit_shortfall_hold, deposit_cleared_net30_active, credit_note_overpayment, past_due_delinquent_invoice, cancelled_order_partial_refund) using integer EUR-cent math.
Every free diagnostic tool in the browser uses the exact same deterministic verification engine exposed over REST and our Model Context Protocol (MCP) server.
| Tool | Input Payload | Failure Caught | REST & MCP Endpoint |
|---|---|---|---|
Stripe basil Auditor |
customerId, subscriptions, dunningGracePeriodDays |
Missing top-level current_period_end & multi-subscription false lockouts |
POST /api/tools/stripe-basil-auditrevclamp_evaluate_ghost_usage |
| Visa CE 3.0 Checker | disputeId, disputeReason, priorTransactions |
Sub-120d prior charges, missing IP/Device match & destructive evidence overwrites | POST /api/tools/stripe-ce3-checkrevclamp_stage_stripe_dispute_ce3 |
| EU VIES Batch Validator | sellerCountry, vatNumbers (up to 20), mode |
Raw GR prefix rejection & VIES HTTP 200 MS_UNAVAILABLE outages |
POST /api/tools/vies-vat-checkrevclamp_validate_eu_vat_vies |
| B2B Net-Terms Calculator | totalOrderCents, paidAmountCents, creditNoteCents, termsType |
IEEE-754 float deposit drift, partial-payment hold release & credit-note overbilling | POST /api/tools/b2b-net-terms-reconcilerevclamp_reconcile_b2b_net_terms |