VirtualSMS.io
Grizzly SMS
SMSCode.gg
SMS-Activate.guru
quackr
SMS-man.com
CodesSender
HeroSMS
Textverified
SMS-man.com
quackr
Mobilesms.io
Receivesms.co
PVADeals
Freephonenum
SMS-Activate.guru
VirtualSMS is a developer-first SMS verification API that uses real SIM-backed phone numbers, not VoIP. Receive OTP codes for any service that sends SMS — built for signup testing, account verification, 2FA flows, and autonomous AI agent workflows.
/stubs/handler_api.php — migrate by changing only the base URLcomposer require virtualsms/sdk; npm via npx -y virtualsms-mcpFree API key, instant, no credit card. Sign up at virtualsms.io.
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VirtualSMS.io's answer
VirtualSMS uses real SIM-backed phone numbers, not VoIP — so it works with services that reject VoIP (WhatsApp Business, Telegram bot at scale, banking apps, dating platforms). It's also the only SMS verification API that ships with an MCP server for AI agents and x402 stablecoin payment support — making it the first SMS API designed for both developers and autonomous AI agents.
VirtualSMS.io's answer
Three reasons:
Real SIM numbers work where VoIP fails. Most competitors (5SIM, SMS-Activate, SMSPVA) lean heavily on VoIP. That gets blocked by services that matter — WhatsApp Business, banking apps, dating platforms. Our numbers don't.
Built-in MCP server for AI agents. Claude, Cursor, ChatGPT, and any MCP-compatible AI agent can handle phone verification autonomously through our MCP server. No other SMS API in this category ships with this.
Pay-per-use, no contracts, no minimum deposit. From $0.05/code. Free API key. Public price endpoint lets you check pricing before signing up. Auto-refund on failed deliveries. x402 stablecoin payments for international developers who want to skip KYC.
VirtualSMS.io's answer
Developers building OTP-dependent workflows: signup testing, QA automation, account verification at scale, and onboarding flows.
Growing segment: AI agent builders using MCP-compatible tools (Claude Code, Cursor, ChatGPT) that need autonomous phone verification capability.
Also: teams migrating from legacy SMS verification providers that no longer meet their needs — either because their suppliers shut down or because their numbers are now blocked as VoIP.
VirtualSMS.io's answer
VirtualSMS launched because every SMS verification API on the market was either VoIP-only — rejected by WhatsApp, banking apps, and most major services — or built around legacy plain-text protocols that modern AI agents couldn't use natively.
We started with a modern REST API and real-SIM-backed numbers. We added an MCP server from day one, making us the first SMS verification service designed for both developers and autonomous AI agents. x402 stablecoin payment support followed — removing KYC friction for international developers who'd been priced out of legacy providers.
VirtualSMS.io's answer
REST API over HTTPS with OpenAPI 3.1 specification
TypeScript MCP server (Model Context Protocol)
Mintlify-hosted developer documentation
x402 stablecoin payment protocol on Base / Polygon / Arbitrum / Optimism
WebSocket for real-time SMS delivery notifications
Webhook event notifications for async integration
sms-activate-style legacy compatibility endpoint (/stubs/handler_api.php) for drop-in migration
VirtualSMS.io's answer
-AI agent platforms integrating our MCP server for autonomous phone verification
-E-commerce QA automation teams testing signup and checkout flows
-Crypto-native developer projects using x402 stablecoin payments
-Developers migrating from sms-activate-style legacy providers
Based on our record, Textverified seems to be more popular. It has been mentiond 9 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Paid, but very good service: https://textverified.com. Source: almost 4 years ago
Ah, yeah I forgot about that part! When you are creating the account, you can click on the flag icon next to the phone number and change it to a different country (including the US if you want to). I don't think there should be a problem with just using your personal cell phone number to verify, but if you want an extra layer of separation you can also try using a SMS verification service like sms-activate.org or... Source: almost 4 years ago
It depends. Suppose you need a one-time burner number to receive a one-time SMS (you can't re-verify yourself using that number again). In that case, you can use reasonably cheap paid text-verification services such as "textverified.com (US only)" or "smspva.com (Multi-countries including Egyptian numbers are available)". Source: almost 4 years ago
Also this doesnt solve the smurfing and cheating problem... There are plenty of services that work as a post paid phone like textverified.com and a few other sites and apps. They did not think this through at all. Source: almost 4 years ago
Textverified.com , would you mind giving me the link to where the raffle is being held? Source: over 4 years ago
Grizzly SMS - Grizzly SMS offers to get temporary phone numbers for OTP from any popular service. Here you can get a virtual mobile number for SMS verification of any country in the world. ✅ Legal service. ✅ Best price
SMS-man.com - SMS-man offers a virtual numbers to receive SMS and create multiple accounts on WhatsApp, Telegram, Instagram, Twitter, Amazon and others. The SMS-man service provides numbers of such countries as China, US, India, Russia, UK, Germany, Ukraine etc.
SMSCode.gg - Buy virtual numbers to receive SMS online for OTP verification. Temporary phone numbers with real SIM, fast activation, 100+ countries. A reliable sms-activate alternative.
quackr - Temporary Phone Numbers & Virtual Numbers for SMS Verification
SMS-Activate.guru - SMS-Activate is a service for sale and rent of virtual numbers of more than 180 countries. We provide virtual numbers in most countries of the world so that you can use them to receive an SMS with a confirmation code online.
Mobilesms.io - Mobilesms.io is a website that allows temporary mobile phone numbers to sign up on any application or website without giving your personal number.