AUTOMATED UNPAID USAGE, CHARGEBACK & EU VAT PROTECTION

Built for Stripe SaaS, API & Shopify B2B Merchants

Stop the Revenue Leaks Your Billing Stack Misses.

Sync product usage with Stripe and Shopify B2B. Pause unpaid accounts after your grace period, stage 90-day usage logs into Stripe dispute drafts, and verify EU VAT IDs—for one flat monthly rate at a 0% take-rate.

Start Free Revenue Audit Try Live Interactive Demo

RevClamp Revenue Shield blocking unpaid subscription access and routing verified chargeback evidence and EU VAT records into your vault

HMAC-SHA256 Signed Revoke Webhooks

Visa CE 3.0 120d–365d Proof Engine

0% Take-Rate Flat Monthly Subscription

SEGMENT 1 • STRIPE B2B SAAS & SUBSCRIPTIONS

Canceled & Past-Due Accounts Shouldn't Keep Using Your Product

When a cancellation webhook drops or a renewal card fails, users often retain full seat and feature access. RevClamp verifies every customer's complete multi-subscription Stripe snapshot and pauses unpaid access only after your custom 0–14 day grace window expires.

0–14d Custom Dunning Grace Multi-Subscription & Trial Safe Instant Restore on Payment

Try Live Stripe Simulator 12-Line Middleware Guide →

LIVE ENTITLEMENT FIREWALL

Subscription Check:All Active & Past-Due Plans

Past-Due Retry Window:Protected (0–14 Days)

Enforcement Action:Signed HMAC Lock / Restore

SEGMENT 2 • CHARGEBACK & VISA CE 3.0 DEFENSE

Walk Into Every Stripe Dispute With 90-Day Proof Already Staged

Stop losing "friendly fraud" disputes or paying 25%–30% commission fees. RevClamp evaluates Visa Compelling Evidence 3.0 (120d–365d prior charges) and appends 90 days of authenticated customer activity logs directly into your Stripe dispute draft without overwriting your notes.

Safe Draft Mode (submit=false) 2-Tier Visa CE 3.0 + Usage Logs 0% Commission Forever

Free Visa CE 3.0 Checker → Inspect Staged Draft JSON

NON-DESTRUCTIVE EVIDENCE AUTOPILOT

Historical Window:120d–365d CE 3.0 + 90d Logs

Merchant Manual Notes:Preserved In-Place

Success Fee Commission:$0 Take-Rate (Flat Plan)

SEGMENT 3 • SHOPIFY PLUS EU B2B WHOLESALE

Zero-Rated EU Wholesale Orders, Backed by an Official Audit Trail

Validates buyer VAT IDs across 27 EU member states + Northern Ireland (XI) against official EU VIES. When government tax servers return MS_UNAVAILABLE, RevClamp places fulfillment on safe hold and retries in the background without blocking checkout.

27 EU States + XI (GR→EL) Non-Blocking VIES Retry Queue Net-15/30/60 Deposit Ledger

Shopify B2B Portal → Free 20-ID VIES Validator →

EU VIES & NET-TERMS VAULT

VIES Outage Handling:Hold Fulfillment & Auto-Retry

Wholesale Net-Terms:Exact EUR-Cent Double-Entry

Quarterly Tax Audit:SHA-256 Signed CSV Bundle

SEGMENT 4 • METERED API & AI AGENT PLATFORMS

Stop Unpaid API & Compute Consumption + Native MCP Server

For usage-billed APIs, developer platforms, and AI products: RevClamp ties every metered request to a verified subscription and exposes a stateless JSON-RPC 2.0 MCP server (POST /api/mcp) and /llms.txt for autonomous FinOps agents.

Per-Event Quota & Loop Guard Streamable HTTP POST /api/mcp Cookieless & 90-Day Auto-Purge

Explore MCP & /llms.txt → 2-Minute API Setup

AGENT-NATIVE MCP PROTOCOL

Discovery Manifests:GET /llms.txt & /llms-full.txt

Streamable HTTP MCP:9 Deterministic JSON-RPC Tools

Runaway Loop Breaker:>5 Identical Calls/60s → 429

STOP UNPAID ACCESS & USAGE

100% Protected

Fires signed revoke webhooks for canceled accounts after your custom grace window and restores access the second they pay.

0–14 Day Custom Grace Guard

AUTOMATED CHARGEBACK PROOF

1-Click Drafts

Stages authenticated login and feature activity logs (with optional IP/device match) directly into Stripe Disputes while keeping final submission in your hands.

Safe Draft Mode (submit=false)

EU B2B VAT & NET-30 GUARD

100% VIES Verified

Protects zero-rated EU wholesale orders with official VIES tax certificates and automated Net-30 deposit checks.

27 EU States + XI & SHA-256 Vault

PRIVACY & SETUP SPEED

2 Minutes

Connects via Stripe OAuth, Shopify App Store, PostHog, or MCP Agent without cookies or browser fingerprinting.

MCP-Native & /llms.txt Ready

HOW IT WORKS IN 3 SIMPLE STEPS

From Silent Revenue Leaks to Automated Protection in 2 Minutes

No complex code changes required. Connect your billing account once and let RevClamp protect your margins 24/7.

STEP 1 • CONNECT

Link Stripe, Shopify & App Activity

Install our official app on Stripe or Shopify and connect your existing product events (PostHog, Segment, REST webhook, or MCP Agent). RevClamp automatically matches every user action to their live billing status.

STEP 2 • DETECT

Spot "Ghost Users" & Chargeback Risks

Instantly see which canceled or overdue accounts are still using your paid product seats, metered APIs, or AI compute—while automatically respecting legitimate billing grace periods and active upgrades.

STEP 3 • RECOVER

Auto-Lock Leaks & Win Chargebacks

RevClamp fires a signed webhook to pause unpaid accounts after your grace window expires and stages Visa CE 3.0 & 90-day verified usage proof directly into your Stripe Dispute draft.

PRODUCTION ARCHITECTURE & SAFEGUARDS

Safe by Default. Built for Engineering & Finance Teams.

Read-only billing sync, draft-only dispute staging, and zero checkout latency to protect your SaaS, API, and compute margins 24/7.

GUARD 01 • ENTITLEMENT

Zero-False-Lockout Entitlement Guard

Pauses unpaid SaaS seat, API, and AI token consumption after your configurable 0–14 day dunning grace window while protecting active, trialing, 24h incomplete, and paid-through subscriptions.

GUARD 02 • DISPUTES

Safe Dispute Drafts (`submit=false`)

Matches 120d–365d historical undisputed charges for Visa CE 3.0 or compiles 90-day usage logs within Stripe's 18,000-character limit without overwriting your notes or auto-submitting.

GUARD 03 • RESILIENCE

Fault-Tolerant VIES & Webhook Outbox

Places cross-border EU B2B orders on safe fulfillment hold with bounded background retries during government VIES tax outages so your checkout never blocks a buyer.

GUARD 04 • PRIVACY

Stateless Audit & 90-Day Bounded Vault

Readiness audits run ephemerally in memory (statelessEphemeralAudit: true). Rolling 90-day retention and cookieless server-side matching require zero browser tracking scripts.

AGENT-NATIVE INTERFACE

Operate RevClamp from Claude, Cursor, Antigravity or Any MCP Agent

Skip manual dashboard checks. Connect any Model Context Protocol (MCP) client to POST /api/mcp or point your coding agent at GET /llms.txt for instant setup and daily revenue audits.

9 Deterministic MCP Tools (POST /api/mcp): Audit unpaid leakage, evaluate customer grace windows, stage submit=false dispute drafts, lint UTF-16 CE 3.0 evidence, validate EU VIES VAT IDs, reconcile Net-30 deposits, verify webhook HMACs, simulate 72h replay FSMs, and calculate 0% take-rate ROI.
Stateless Sandbox & Live Modes: Test all 9 tools immediately without an API key, or pass Authorization: Bearer rg_live_... for authenticated workspace operations.
Agent Loop Circuit Breaker: Built-in JSON-RPC 2.0 rate limiting and duplicate-call clamping (>5 identical calls/60s → HTTP 429) stop runaway agent loops.

View /llms.txt Spec → 12-Line Middleware & CTO Guarantees →

MCP SERVER CONFIG (CLAUDE / CURSOR / ANTIGRAVITY)

{
  "mcpServers": {
    "revclamp": {
      "url": "https://app.revclamp.com/api/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_WORKSPACE_KEY_OR_OMIT_FOR_SANDBOX>"
      }
    }
  }
}

CODING AGENT PROMPT (/LLMS.TXT)

Read https://app.revclamp.com/llms.txt and integrate RevClamp's fail-open X-RevClamp-Signature middleware and POST /api/mcp revenue audit tools into this project.

INTERACTIVE PRODUCT DEMO

Interactive Marketplace App Simulators

Click any scenario below to see how RevClamp protects your business inside Stripe and Shopify.

Test how RevClamp distinguishes between a canceled user draining your resources vs. a paying customer in a 3-day payment retry window:

Unpaid Actions Caught

$4.26

Direct Cost Saved

Auto-Lock Access

Automated Response

Instant Account Lock Triggered

This customer canceled 5 days ago but triggered 3 expensive AI tasks today. RevClamp sent a verified lock signal to pause their access until they renew.

CUSTOMER PROTECTION SUMMARY

Customer Account cto@stealth-agent.ai (cus_ghost_ai_99)

Stripe Subscription Status Canceled (Expired 5 days ago)

Unpaid Usage Detected 3 API/AI actions ($4.26 direct compute cost)

RevClamp Protection Decision Signed Revoke Webhook Dispatched (Restores on Payment)

Recent Caught Activity Stream (90-Day Audit Trail) • ai_completion_gpt4o — 20 mins ago ($1.42 compute cost)
• vector_embedding_batch — 10 mins ago ($1.42 compute cost)
• agent_workflow_execute — 1 min ago ($1.42 compute cost)

Developer View: Inspect Raw Technical JSON

{
  "customerId": "cus_ghost_ai_99",
  "email": "cto@stealth-agent.ai",
  "subscriptionCount": 1,
  "subscriptionStatuses": [
    "canceled"
  ],
  "statusBadge": "CRITICAL_GHOST_LEAK",
  "isGhostLeaking": true,
  "latestEvaluationReason": "UNPAID_GHOST_USAGE_CONFIRMED",
  "ghostLeakEventsCount": 3,
  "estimatedLeakUsd": 4.26,
  "lastLeakAtSec": 1792454340,
  "recommendedAction": "DISPATCH_SIGNED_REVOKE_WEBHOOK"
}

When a customer claims a charge was "unauthorized", RevClamp automatically gathers their 90-day login and usage history and appends it to your Stripe Dispute draft without erasing your team's notes.

Evidence Log Capacity (69 existing + 249 appended) 320 / 18,000 chars

Your Existing Notes (69 chars kept intact) RevClamp Verified Usage Log (249 chars added)

Chargeback Safety Guarantee	Verification
Never Overwrites Your Manual Notes (Merges cleanly with existing receipts)	GUARANTEED
Verified Customer Match (Confirms usage belongs to `cus_ghost_ai_99`)	VERIFIED
EU Privacy Compliant (Works with or without IP tracking)	PRIVACY SAFE
100% Merchant Control (Saved as Draft in Stripe for your final click)	READY FOR REVIEW

STAGED STRIPE DISPUTE EVIDENCE PREVIEW

Dispute Case du_1QxyzEnterpriseDispute01 (Needs Response)

Merchant Notes Preserved "Customer accepted Master SaaS Agreement v4.2 at checkout."

Verified Activity Attached 2 Verified Customer Sessions • 100k AI Tokens Consumed

Auto-Attached Stripe Access Activity Log Preview • 2026-10-18 14:22 UTC — API Key Minted by cto@stealth-agent.ai
• 2026-10-19 18:04 UTC — 100k LLM Batch Inference Completed (cus_ghost_ai_99)

Developer View: Inspect Raw Technical JSON

{
  "ok": true,
  "disputeId": "du_1QxyzEnterpriseDispute01",
  "status": "needs_response",
  "submitFalseLocked": true,
  "skipped": false,
  "skippedReason": null,
  "existingChars": 69,
  "addedBlockChars": 249,
  "charCount": 320,
  "maxChars": 18000,
  "utilizationPct": 1.8,
  "mergedLogPreview": "2026-10-15T09:12:00Z | Initial OAuth workspace provisioning completed\n\n[RevClamp Verified Product Usage Log]\n2026-10-18T14:22:10.000Z | actor=usr_99 | event=api_key_production_minted | ip=198.51.100.42\n2026-10-19T18:04:55.000Z | actor=usr_99 | event=llm_batch_inference_100k_tokens\n[/RevClamp Verified Product Usage Log]",
  "ce3Qualification": {
    "eligible": true,
    "reason": "CE3_COMPELLED_EVIDENCE_QUALIFIED",
    "matchedPriorTransactionIds": [
      "ch_prior_preview_150d",
      "ch_prior_preview_210d"
    ],
    "sharedIdentifiers": [
      "user_id",
      "email",
      "ip_subnet",
      "device_id"
    ],
    "windowBoundsSec": {
      "minAgeSec": 10368000,
      "maxAgeSec": 31536000
    }
  }
}

Avoid failed EU VAT audits and 20% back-tax fines. Automatically normalize European buyer VAT numbers (such as converting Greece GR to official EU EL format), retry gently if government tax servers are busy, and verify 30% wholesale deposits before shipping.

Buyer Entered: GR 123456789 Auto-Corrected: EL123456789 Auto-Retries if EU Tax Server is Busy

Wholesale Net-30 Upfront Deposit (30% Required) EUR 1,440 / EUR 4,800 (30%)

Upfront deposit confirmed — Wholesale order cleared for warehouse fulfillment

Wholesale Protection Check	Result
Country Prefix Auto-Correction (`GR 123456789`)	`EL123456789`
Government Tax Server Outage Protection	Auto-Retries in Background
Net-30 Upfront Deposit Verification	Deposit Paid (EUR 1,440)
Tamper-Proof Tax Audit Seal	`53510069d0496025a9937c0d...`

53510069d0496025a9937c0dc52494fd74f1b9f5efebdbd2ac59905d73cbfcda

WHOLESALE VAT & NET-30 AUDIT RECORD

Buyer Company Athina Industrial GmbH (Order #58921044)

Official EU Tax Certificate ID WAPIAAAAZ1x9vB22 (0% EU Reverse-Charge Approved — Protected from 20% VAT Fines)

Net-30 Balance Tracking EUR 1,440 Paid Now • EUR 3,360 Due in 30 Days

Quarterly Tax Audit Spreadsheet Ready for 1-Click Spreadsheet Download (Tamper-Proof Audit Copy)

Developer View: Inspect Raw Technical JSON

{
  "viesNormalizedGreece": {
    "validFormat": true,
    "countryCode": "EL",
    "vatNumber": "123456789",
    "fullVatId": "EL123456789"
  },
  "viesVerifiedOrder": {
    "orderId": "gid://shopify/Order/58921044",
    "checkoutBlocked": false,
    "fulfillmentHold": false,
    "orderTag": "vat_audit:verified",
    "consultationId": "WAPIAAAAZ1x9vB22",
    "status": "VERIFIED_ZERO_RATED"
  },
  "viesTransientHold": {
    "orderId": "gid://shopify/Order/58921045",
    "checkoutBlocked": false,
    "fulfillmentHold": true,
    "orderTag": "vat_audit:pending_vies_retry",
    "status": "PENDING_ASYNC_RETRY",
    "attempt": 2,
    "nextRetryAtSec": 1792454520
  },
  "netTermsDepositCleared": {
    "orderId": "gid://shopify/Order/58921044",
    "termsType": "NET_30",
    "currency": "EUR",
    "state": "DEPOSIT_CLEARED_ACTIVE",
    "fulfillmentHold": false,
    "releaseHoldAction": true,
    "orderTag": "b2b_net_terms:deposit_cleared",
    "totalOrderCents": 480000,
    "effectiveTotalCents": 480000,
    "requiredDepositCents": 144000,
    "effectiveRequiredDepositCents": 144000,
    "paidAmountCents": 144000,
    "refundedAmountCents": 0,
    "creditNoteCents": 0,
    "effectivePaidCents": 144000,
    "appliedToleranceCents": 0,
    "remainingBalanceCents": 336000,
    "balanceDueCents": 336000,
    "overpaidCents": 0,
    "balanceDueAtSec": 1795046400,
    "dueDateUnknown": false
  },
  "auditBundleSample": {
    "quarter": "2026-Q4",
    "sellerVatId": "DE123456789",
    "retentionWindowDays": 90,
    "recordCount": 1,
    "skippedCount": 0,
    "skippedRecords": [],
    "totalEurNetAmountCents": 480000,
    "unconvertedNonEurCount": 0,
    "allConvertedToEur": true,
    "bundleChecksumSha256": "53510069d0496025a9937c0dc52494fd74f1b9f5efebdbd2ac59905d73cbfcda",
    "conversionChecksumSha256": "a828a5cdd68d643503e369d100e4f93d90b7377f9f033b53faceb2f26287022c",
    "csvText": "order_id,buyer_company,buyer_vat_id,seller_vat_id,vies_consultation_id,verified_at_iso,net_amount_cents,currency,row_sha256\r\ngid://shopify/Order/58921044,Athina Industrial GmbH,EL123456789,DE123456789,WAPIAAAAZ1x9vB22,2026-10-19T10:30:00.000Z,480000,EUR,6d8a59da4dd720cf75cece3041cb574097f2e09699254406752fb5d0ed497029\r\n",
    "records": [
      {
        "orderId": "gid://shopify/Order/58921044",
        "buyerCompany": "Athina Industrial GmbH",
        "buyerVatId": "EL123456789",
        "sellerVatId": "DE123456789",
        "consultationId": "WAPIAAAAZ1x9vB22",
        "verifiedAtIso": "2026-10-19T10:30:00.000Z",
        "netAmountCents": 480000,
        "currency": "EUR",
        "eurNetAmountCents": 480000,
        "exchangeRateToEur": 1,
        "exchangeRateSource": "IDENTITY_EUR",
        "rowSha256": "6d8a59da4dd720cf75cece3041cb574097f2e09699254406752fb5d0ed497029"
      }
    ]
  }
}

SIMPLE, HIGH-ROI PRICING

Keep 100% of the Revenue We Recover. Zero Commission Fees.

Competitors take 25%–40% of your recovered chargebacks. Start with a free 90-day audit on RevClamp and pay a flat monthly rate via Visa or Crypto (USDC / USDT).

INTERACTIVE 0% TAKE-RATE ROI CALCULATOR

Compare Flat-Rate RevClamp ($59/mo) vs. 25%–30% Dispute Success-Fee Tools

0% Commission Forever

Monthly Won Chargeback Volume ($ USD)

Monthly Revenue Lost to Unpaid Usage ($)

Contingency Fee Model

Legacy Take-Rate Commission: $2,500 / mo

Unpaid Usage Stopped: +$600 / mo

RevClamp Growth Flat Plan: $59 / mo (0% Fee)

Net Annual Margin Saved: $36,492 / yr

Free Audit

$0 / month

Up to 5,000 events / mo

Live Stripe Customer & Dispute Drawers
90-Day Unpaid Usage & Leak Detection Report
EU VAT Number Format Normalization & 9 MCP Tools

Start Free Audit

Starter

$19 / month

Up to 100,000 events / mo

Automated Unpaid Account Lock & Restore Webhooks
Automated Stripe Chargeback Evidence Staging
Official EU VIES Tax Certificate Vault & CSV Export

Start Starter Plan ($19/mo)

Growth • Most Popular

$59 / month

Up to 1,000,000 events / mo

1M Monthly Events for High-Growth SaaS & AI Apps
Multi-Subscription & Custom Grace Window Rules
Shopify B2B Net-15/30/60 Deposit Reconciliation

Start Growth Plan ($59/mo)

Scale

$199 / month

Up to 5,000,000 events / mo

5M Monthly Events & Priority Webhook Queue
Dedicated 24/7 Engineering SLA (< 2h P0 Response)
Custom DPA & Multi-Store Compliance Exports

Choose Scale ($199/mo)

Instant Self-Serve Activation: Quotas, signed webhooks, and EU VIES vaults activate immediately upon checkout. Cancel anytime, backed by our 14-Day Refund Guarantee. 14-Day Refund Policy Terms Privacy Customer Billing Portal →

Stop the Revenue Leaks Your Billing Stack Misses.

Canceled & Past-Due Accounts Shouldn't Keep Using Your Product

Walk Into Every Stripe Dispute With 90-Day Proof Already Staged

Zero-Rated EU Wholesale Orders, Backed by an Official Audit Trail

Stop Unpaid API & Compute Consumption + Native MCP Server

From Silent Revenue Leaks to Automated Protection in 2 Minutes

Link Stripe, Shopify & App Activity

Spot "Ghost Users" & Chargeback Risks

Auto-Lock Leaks & Win Chargebacks

Safe by Default. Built for Engineering & Finance Teams.

Zero-False-Lockout Entitlement Guard

Safe Dispute Drafts (submit=false)

Fault-Tolerant VIES & Webhook Outbox

Stateless Audit & 90-Day Bounded Vault

Operate RevClamp from Claude, Cursor, Antigravity or Any MCP Agent

Interactive Marketplace App Simulators

Keep 100% of the Revenue We Recover. Zero Commission Fees.

Compare Flat-Rate RevClamp ($59/mo) vs. 25%–30% Dispute Success-Fee Tools

Safe Dispute Drafts (`submit=false`)