Real Phone Identities for Claude AI Agents
Provide your Claude-powered agents with a genuine UK carrier presence to seamlessly bypass WhatsApp's strict verification protocols.
The Problem: When developing an autonomous AI agent using the Claude API, you often want it to interact with users via WhatsApp. To do this, the agent needs its own WhatsApp Business account and a dedicated phone number.
Why VoIP Fails: WhatsApp employs advanced security measures, including Type Allocation Code (TAC) scanning and network-level line checks, to identify and ban VoIP numbers automatically. If you assign a virtual number to your Claude agent, it will likely be banned before it can even send its first message.
The Solution: SecondSIM gives your Claude agent a legitimate UK carrier presence. By using an eSIM with a clean IMSI range, WhatsApp views your agent's number as a standard consumer device. This establishes a stable, permanent identity for your agent, free from automated VoIP suspensions.
Establishing your Agent's Identity
Provision a Number
Subscribe to a SecondSIM plan to receive a genuine, non-VoIP UK mobile number instantly via QR code.
Activate on a Handset
Scan the QR code on a physical smartphone (acting as the anchor device) to connect to the carrier network.
Register WhatsApp Business
Install the WhatsApp Business app and register the SecondSIM number. Receive the verification SMS on the handset.
Bridge with Claude
Use the official WhatsApp Business API (or a bridge tool) linked to this verified account to connect your Claude agent to the WhatsApp network.
Technical FAQ
Is this compatible with the official WhatsApp Business API?
Yes. Since the number is a standard mobile line, you can use it to register for the official WhatsApp Business API or through a BSP (Business Solution Provider).
Can my Claude agent read the SMS directly?
No. The SMS is delivered via cellular network to the physical device hosting the eSIM. You must manually read the initial setup code to verify the WhatsApp account.
Will my personal WhatsApp be affected?
No. The SecondSIM eSIM operates as a completely separate line. Your personal WhatsApp and the agent's WhatsApp Business account remain entirely isolated.
Do you offer a money-back guarantee?
Yes. If the number cannot be used to verify your WhatsApp Business account for your agent, we provide a full refund within 7 days.
Can I use this for multiple agents?
Each eSIM provides one dedicated phone number. If you have multiple independent Claude agents that require distinct identities, you will need a separate SecondSIM subscription for each.
Give Your Claude Agent a Real Identity
Stop struggling with banned virtual numbers. Get a trusted UK mobile number today.
Get Started From £4.99/mo