Receive SMS online,
free, in seconds.
Temporary phone numbers for verification, on real SIMs, from the US, UK, Germany and more. No SIM of your own, no registration. Read the code live. Plus private numbers and a native MCP server so AI agents verify on their own.
SMS · OpenAI
Your verification code is 504913✓ Delivered in 1.8s · free
Free temporary phone numbers
Pick one, receive your SMS online, free. Real numbers, public inbox, instant delivery.
Why asms.ai
Still here since 2018, and built for AI agents.
DaisySMS shut down and took its numbers with it. SMS-Activate resells its numbers, with no free tier and no native agent interface. asms.ai has run since 2018 with a free tier, a native MCP server for agents, and numbers that are never resold.
| asms.ai | DaisySMS | SMS-Activate | |
|---|---|---|---|
| Online since | 2018 | Shut down | 2017 |
| Free public numbers | Yes | No | No |
| Native MCP for AI agents | Yes | No | No |
| Auto-refund on no-code | Yes | No | Partial |
| Numbers never resold | Yes | No | No |
How to receive SMS free
Pick a number
Choose a free number from the US, UK, Germany and more. No sign-up.
Use it to verify
Paste it into the service asking for a phone number.
Read the code
The SMS appears in the public inbox within seconds. Done.
Your agent verifies on its own.
One Bearer key drives a clean REST API and a native MCP server. Claude and autonomous agents get pricing, order a number, and read the code with no human in the loop.
Explore the docscurl -X POST https://asms.ai/api/v1/otp/order \
-H "Authorization: Bearer $ASMS_KEY" \
-d '{"service":"openai","country":"us"}'
# -> { "sms": { "code": "504913" } }{ "mcpServers": { "asms": {
"url": "https://asms.ai/mcp",
"headers": { "Authorization": "Bearer $ASMS_KEY" }
} } }Loved by 136,000+ users
Read verified reviews on Trustpilot
I spin up test accounts all day. asms.ai gets me a number and a code in seconds, no SIM, no hassle.
Marcus T. · Developer
We verify across dozens of platforms. The API and the free numbers together cover everything we need.
Priya R. · Growth marketer
I stopped giving my real number to random apps. This keeps the spam off my actual phone.
Sofia L. · Privacy-first user
Built to outlast the rest.
Most SMS services vanish within a couple of years, taking your balance with them. asms.ai has run since 2018, with a funded company behind it. We are not going anywhere.
8 years online
Live since 2018, while countless services came and went.
A funded company behind it
An established group backs the service. Not a side project that disappears.
Your number stays yours
No SIM, no personal info, no spam on your real line.
Frequently asked questions
Is it really free to receive SMS online?+
Yes. The free public numbers are shared, with an inbox anyone can view, and cost nothing, with no registration. For a number only you can see, use a paid private number.
How fast do verification codes arrive?+
Usually within seconds. The SMS appears live in the number's inbox, with nothing to install.
Which countries and services are supported?+
Hundreds of services across the US, UK, Germany, Georgia, Ukraine and more, with live availability shown before you choose.
Can AI agents use it?+
Yes. A clean REST API and a native MCP server let scripts and AI agents request numbers and read codes on their own.
Is my real number exposed?+
Never. Free numbers are shared with a public inbox; private numbers are dedicated to your account. Either way your personal number stays yours.
Receive your code right now.
Pick a free number, or create an account for private numbers and the API. Humans welcome. Agents too.