Sub-50ms B2B Trust & Fraud Gateway. Engineered for Checkout Rails, Auth & AI Agents.
Stop fake signups, validate EU/US tax exemption, and block toll fraud at the edge in a single round-trip. Deterministic, ultra-low latency, with zero third-party vendor lock-in before burning API credits.
// ❌ Legacy Approach: 3 Separate Vendors // 1. ZeroBounce API: $0.008 (Email) // 2. Twilio Lookup API: $0.015 (Phone) // 3. Tax / VIES Wrapper: $0.005 (VAT) // Total Latency: 1,850ms (3 roundtrips) // Result: 18% signup drop-off rate
{
"success": true,
"verdict": "ALLOW",
"trust_score": 96,
"execution_time_ms": 38,
"checks": {
"email": {
"address": "alex@stripe.com",
"is_valid_format": true,
"is_disposable": false,
"is_corporate_domain": true,
"has_mx": true,
"verdict": "ALLOW"
},
"tax": {
"country_code": "DE",
"tax_id": "DE811123456",
"type": "EU_VAT",
"is_valid_format": true,
"is_valid_checksum": true,
"verdict": "ALLOW"
},
"phone": {
"e164": "+493012345678",
"country_code": "DE",
"line_type": "LANDLINE",
"is_voip": false,
"verdict": "ALLOW"
}
},
"summary": {
"is_business_qualified": true,
"recommended_action": "AUTO_APPROVE"
}
}
Cloudflare DoH MX lookups instantly reject burner emails and free-tier GPU farm accounts.
Deterministic Modulo 11/97 & ISO 7064 checksums with circuit-breaker VIES fallbacks.
E.164 normalization flags burner virtual lines before sending expensive SMS OTP codes.
Runs synchronously on checkout and auth forms without perceptible user delay.
How to Cut Your Verification Stack Costs by 90%
Stop managing 3 separate vendor bills for email deliverability, VAT compliance, and phone risk. Use TokenVerify as your unified sub-50ms gateway.
ZeroBounce + Twilio + VAT API
Calling 3 separate APIs on every signup creates 1,800ms lag, frequent 503 errors, and expensive tiered overages.
Step 1: Sub-50ms Edge Gateway
TokenVerify evaluates email MX, tax checksums, and phone line risk in a single edge call. 1 bill, 1 key, zero lag.
One API call. Instant B2B Trust Verdict.
Drop into Next.js auth middleware, Supabase user triggers, Claude Desktop MCP, or terminal cURL loops in under 60 seconds.
# 1. Execute sub-50ms B2B Lead Verification
curl -X POST "https://tokenverifyapi.com/v1/verify/b2b-lead" \
-H "Authorization: Bearer tv_live_YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"email": "alex@stripe.com",
"tax_id": "DE811123456",
"country_code": "DE",
"phone": "+493012345678"
}'
# 2. Decision Engine Response (38ms latency)
{
"success": true,
"verdict": "ALLOW",
"trust_score": 96,
"checks": {
"email": { "is_corporate_domain": true, "has_mx": true },
"tax": { "is_valid_checksum": true, "type": "EU_VAT" },
"phone": { "is_voip": false, "line_type": "LANDLINE" }
}
}Integrate with your exact stack in minutes.
Native 1-click downloadable blueprints for Claude Desktop, Next.js, Supabase, Stripe, and Clay.
Model Context Protocol (MCP)
Run autonomous vendor verification in Claude Desktop & Cursor. Validate tax exemptions before executing tool purchases.
View MCP Setup Guide →Next.js & Stripe Checkout
Block disposable domains at Vercel edge and auto-apply 0% Reverse Charge tax exemptions on valid EU/UK VAT numbers.
Copy Middleware Code →Clay.com & n8n Orchestration
Clean and verify 10,000 lead rows in batch at $0.0019/row before paying $0.01+ for expensive contact finders.
View Clay Template →Predictable monthly billing. Cancel anytime. Zero annual lock-in.
1 credit = 1 full 3-in-1 verification check. Self-serve key generation via Unkey.dev & Polar.sh.
-
Unified
/v1/verify/b2b-lead - Model Context Protocol (MCP) Active
- Sub-50ms Cloudflare Edge Global
- Instant API Key (No card required)
- All 3 Standalone & Unified Endpoints
- EU VAT (27 States) + US EIN
- 3,500+ Temp-Mail Blacklist Sync
- £0.0029 / overage request
- Parallel Batch API (50 records/req)
- Circuit-Breaker Live VIES Caching
- VoIP & Toll-Fraud Risk Scoring
- £0.0019 / overage request
- 50,000 TokenVerify checks
- 25,000 TokenEnrich lookups
- 50,000 TokenMarkdown scrapes
- 1 Master Unkey API Key
Frequently Asked Questions
Everything you need to know about sub-50ms edge execution, algorithmic tax checksums, disposable email defense, and Model Context Protocol (MCP) integration.
How does TokenVerify differ from bulk scrubbers like ZeroBounce or NeverBounce?
TokenVerify is purpose-built as a sub-50ms real-time edge security gateway for signup forms, checkout rails, and autonomous AI agents. We execute instant DNS MX resolution, 3,500+ temp-mail blacklisting, and mathematical tax/VAT checksums so your users experience zero friction. We deliberately avoid slow 2-second SMTP socket handshakes that cause checkout cart abandonment and get blocked by Google/Microsoft.
How does TokenVerify achieve sub-50ms global latency?
TokenVerify executes on Cloudflare Workers edge nodes across 300+ cities using Cloudflare DNS-over-HTTPS (DoH) for MX resolution and mathematical Modulo ISO 7064 checksum algorithms for instant local VAT validation without waiting on slow third-party government servers.
How does the VAT engine handle EU VIES government downtime?
Over 90% of invalid VAT/EIN numbers are caught in 0.2ms via local Modulo 11/97 and ISO 7064 algorithms. When live VIES lookups are needed, we query with a 1,200ms circuit breaker and cache confirmed numbers at the edge for 30 days.
How frequently is the disposable email blacklist updated?
We pull continuous daily updates from 15+ curated open-source feeds and monitor live MX infrastructure patterns to detect rotating temporary inboxes, burner domains, and catch-all spam servers in real time.
How does TokenVerify stop SMS OTP toll-fraud (pumping attacks)?
The phone engine parses ITU E.164 formats, inspects carrier ranges, and flags virtual/VoIP numbers and high-risk premium rate prefixes (e.g. UK 070/090, US 900) before your app sends expensive SMS OTP verification codes.
How do I connect TokenVerify to Claude Desktop or Cursor via MCP?
TokenVerify publishes a standalone Model Context Protocol server via npx -y tokenverify-mcp. Simply add your API key into Claude Desktop or Cursor's MCP configuration to enable autonomous vendor and tax verification in 1 click.
Can I bundle TokenVerify with TokenEnrich and TokenMarkdown?
Yes. The Sovereign Pass (£199/mo) unlocks unified quotas across all three tools: 50k TokenVerify checks + 25k TokenEnrich lookups + 50k TokenMarkdown extractions with a single master Unkey API key.
Start verifying B2B leads in under 60 seconds.
50 free API checks included. Zero credit card required. Drop into Next.js middleware, Supabase Auth, Claude Desktop, or Clay waterfalls immediately.