Claude API & WhatsApp Business Integration

WhatsApp Lines for Claude.
Non-VoIP. Verified.

Give your Claude API bots a dedicated UK mobile identity on Vodafone. Satisfies Meta's carrier HLR checks, preventing automated VoIP suspensions before your agent sends its first message.

Get Claude eSIM (£5.99/mo) View Architecture ↓
Carrier-grade network • Runs on Vodafone • 4,000+ UK businesses • No ID checks • Live in 60 seconds
Agent Blueprint

Establishing Your Agent's Identity.

Four robust architectural stages to hook Claude API endpoints directly into WhatsApp Business.

STAGE 01

Provision Real Mobile Line

Receive an authentic UK 07xxx number instantly. Carrier-level Vodafone routing ensures it possesses genuine Mobile Network Codes (MNC).

STAGE 02

Handset Anchor Activation

Scan your QR code on a physical smartphone or companion device. The eSIM registers directly with UK cellular cell towers.

STAGE 03

WhatsApp Business Register

Open WhatsApp Business, input your SecondSim number, and receive the SMS confirmation code cleanly without automated fraud blocks.

STAGE 04

Bridge Claude API Webhook

Hook inbound customer queries to your Claude 3.5 Sonnet pipeline via webhook automation (n8n, Make, or custom API endpoints) and return verified responses.

Transparent Pricing

Pick Your Line For Claude.

Live in 60 seconds. Cancel anytime with a 100% money-back guarantee.

Monthly Plan

Flex Line

£5.99/mo
inc. VAT • Rolling 30 days • Zero contract
  • Real UK 07 Mobile Number (Non-VoIP)
  • Guaranteed WhatsApp Business Verification
  • Unlimited UK Calls & SMS
  • Inbound SMS when roaming
  • Live Cellular Signalling on Vodafone
  • Instant eSIM Delivery in 60s
Choose Flex
RECOMMENDED
Annual Saver

Annual Line

£59.99/yr
Save 17% vs monthly • £5.00/mo equiv
  • Everything in Flex Line
  • 2 Months Free vs Monthly
  • Permanent Number Retention
  • Free PAC Number Porting
  • Priority Technical Support
Choose Annual
Data Intensive

Pro Unlimited Data

£19.99/mo
inc. VAT • Heavy cellular agent workflows
  • Unlimited UK High-Speed 5G Data
  • Unlimited UK Calls & SMS
  • Inbound SMS when roaming
  • Full 5G Mobile Hotspot & Tethering
  • No Speed Caps or Throttles
  • Failover for Remote Agent Rigs
Choose Unlimited
100% money-back guarantee If your number fails WhatsApp Business setup for your Claude agent within 7 days, get a full refund.

People who finally switched off

"Running a salon meant clients contacting me 24/7. There's no more evening anxiety when my phone buzzes."
Caroline — The Basement, Urmston
"I've framed it to clients as a priority hotline. Nothing gets lost, and I get my evenings back."
That Girl Friday — business support
"I juggle a job and two side-gigs without carrying a second phone or signing a contract."
Mike — The Braai Guys
Infrastructure Audit

SecondSim vs VoIP & Burner SIMs.

Why cellular network routing is necessary for WhatsApp Business account security.

Metric SecondSim Virtual VoIP Apps Physical PAYG SIMs
WhatsApp HLR Check ✓ Real Mobile (MNC Valid) ✕ Flagged as virtual/VoIP ✓ Real Mobile
Account Ban Risk ✓ Zero • Clean cellular range ✕ Extreme • Auto-flagged Low • Standard consumer line
Setup Velocity ✓ 60 seconds • Digital eSIM Fast (fails verification) 3–5 days postal wait
Dedicated Hardware ✓ None • Dual-eSIM profile App only Requires physical SIM slot
Long-Term Stability ✓ Guaranteed • Active line Recycled unexpectedly Lapses without continuous top-ups
Technical FAQ

Frequently Asked Questions.

Yes. Because SecondSim provides a standard UK 07 mobile line with an authentic Mobile Network Code (MNC), it can be registered on the standard WhatsApp Business app or used to verify official WhatsApp Business API gateways.
The initial WhatsApp SMS registration code is delivered securely via cellular signalling to the phone holding the eSIM profile. Once verified, all conversational traffic routes digitally through your webhook bridge to the Claude API.
No. The SecondSim eSIM operates as an entirely independent line. Your personal WhatsApp messenger and the agent's WhatsApp Business profile remain completely separate.
Yes. Each SecondSim profile delivers one dedicated phone number. If you run multiple autonomous agents requiring distinct personas, you can order additional eSIM profiles through your SecondSim dashboard.
Built for Claude Developers

Equip your Claude agent in 60 seconds.

Stop struggling with banned virtual numbers. Get a verified UK mobile number today.

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