DEV Community: sms-florin

Testing signup flows with an AI agent: give it a throwaway email + phone number

sms-florin — Fri, 21 Aug 2026 07:53:07 +0000

If you're building or testing an AI agent that needs to sign up for something — a SaaS trial, an app that requires phone verification, anything with an OTP step — you hit the same wall every time: someone has to babysit the inbox or the phone to relay the code back.

I built agent-identity-mcp, an MCP server that gives an agent both a disposable email address and a real phone number, so it can complete the whole signup loop itself — request the code, read it, submit it — without a human in the middle.

How it works

It's an MCP server with 5 tools:

create_test_email — get a disposable inbox
get_test_email_messages — read what landed in it
list_services — see which apps/services have phone-verification support
rent_test_phone_number — get a real number
wait_for_test_sms — block until the OTP arrives, then return it

It bundles two things I already run in production: receivemail.dev for the email side, and sms-florin for the phone side — real UK carrier numbers, not VOIP, since a lot of signup flows now block VOIP ranges outright.

Setup

{
  "mcpServers": {
    "agent-identity": {
      "command": "npx",
      "args": ["-y", "agent-identity-mcp"],
      "env": { "SMS_FLORIN_API_KEY": "your-key-here" }
    }
  }
}

Get a key at https://flo-voice1.com/api-access. The email side needs no credential at all — mailbox creation is public and rate-limited.

Works with Claude Desktop, Cursor, Cline, or any MCP-compatible client.

Why I built it this way

The obvious alternative — mocking the email/SMS layer — doesn't actually test the real flow. Real providers reject disposable domains, real phone-verification APIs reject VOIP numbers, and both have delivery quirks that only show up with real infrastructure. This uses the real thing on both ends, so if the test passes, the actual signup flow works.

Repo: https://github.com/flovoice53-tech/agent-identity-mcp
npm: agent-identity-mcp

Happy to answer questions — curious what other pieces people wish existed for testing agent-driven flows end to end.

How to Verify Epic Games Without Using Your Personal Phone Number

sms-florin — Mon, 17 Aug 2026 08:25:26 +0000

Epic Games (Fortnite, the Epic Games Store) offers phone-based two-factor authentication and, on some accounts, asks for phone verification to lift restrictions or confirm account recovery. Managing a second account, testing an integration, or just not wanting your personal number tied to a gaming account are all common reasons to use a rented number instead.

Steps

Rent a number for Epic Games — an instant rental is enough for a one-time verification.
In your Epic Games account settings, under password & security, enter the rented number when prompted for phone verification.
Epic Games sends a verification code by SMS within seconds on a working number.
Enter the code from your rentals status page to complete verification.

Instant or monthly?

An instant rental covers the one-time verification. Monthly only makes sense if you expect Epic Games to text that number again later — not typical for this kind of account-level verification.

Originally published at flo-voice1.com

Your First Instant Rental Is Now Free

sms-florin — Tue, 11 Aug 2026 04:31:58 +0000

New sms-florin accounts get their first instant rental — any service — free, no balance needed. Here's how it works.

If you've been on the fence about trying sms-florin, there's now a zero-risk way to do it: your first instant rental, for any service on the site, is free. No card, no topup, no catch — sign up, pick a service, and get a real UK number to receive your code.

How it works

Create an account and head to the Rent page. If you haven't used your free rental yet, you'll see it clearly marked — the price shows as free with the normal price crossed out. Pick any service, and the rental goes through without touching your balance.

It only applies to instant rentals (one code, then done), not monthly rentals, and only once per account. After that, normal pay-as-you-go pricing applies — top up via Stripe or bank transfer whenever you're ready.

Why we're doing this

The honest reason: we'd rather let the product speak for itself than ask you to trust a description. sms-florin runs real physical GOIP hardware — actual SIM cards on UK carrier networks (EE/Three), not resold VoIP numbers — and the easiest way to show that's true is to let you receive a real code without spending anything first.

If the number arrives and the code works, you'll know exactly what you're paying for on every rental after that.

Try it: https://flo-voice1.com/rent

How to Verify Yahoo Without Using Your Personal Phone Number

sms-florin — Sat, 08 Aug 2026 13:08:25 +0000

Yahoo asks for phone verification when creating a new account or recovering an existing one, mainly to cut down on spam signups. If you're testing an email integration, setting up a throwaway account, or don't want a personal number attached to it, a rented number covers the check.

Steps

Rent a number for Yahoo — an instant rental is enough for a one-time verification.
On Yahoo's phone-verification step, enter the rented number with its country code.
Yahoo sends a verification code by SMS within seconds on a working number.
Enter the code from your rental's status page to finish verifying.

Instant or monthly?

An instant rental is enough for the standard check. Choose monthly only if you expect Yahoo to re-verify the same number later, which isn't the common case.

Originally published at flo-voice1.com.

How to Verify Vinted Without Using Your Personal Phone Number

sms-florin — Sat, 08 Aug 2026 13:07:52 +0000

Vinted asks sellers to verify a phone number, and may re-ask after a login it flags as unusual. If you're reselling without wanting buyers or Vinted itself to have your personal number, or testing an integration, a rented number covers it.

Steps

Rent a number for Vinted — an instant rental is enough for the standard verification.
On Vinted's phone-verification prompt, enter the rented number with its country code.
Vinted texts a verification code within seconds on a working number.
Enter the code from your rental's status page to finish verifying.

Instant or monthly?

Instant is enough for a one-time check. A monthly rental makes more sense for an active seller account Vinted might re-verify later.

Originally published at flo-voice1.com.

How to Verify Viber Without Using Your Personal Phone Number

sms-florin — Sat, 08 Aug 2026 13:07:51 +0000

Viber requires a phone number to register, the same way WhatsApp and Telegram do. If you're testing a messaging integration, managing a second account, or don't want your personal number tied to it, a rented number handles the verification.

Steps

Rent a number for Viber — an instant rental is enough for a one-time registration.
Open Viber, choose to register, and enter the rented number with its country code.
Viber sends a verification code by SMS within seconds on a working number.
Enter the code from your rental's status page to complete registration.

Instant or monthly?

Instant is enough for the initial registration. A monthly rental only helps if you expect Viber to re-verify the same number later on a new device.

Originally published at flo-voice1.com.

How to Verify Venmo Without Using Your Personal Phone Number

sms-florin — Sat, 08 Aug 2026 13:07:18 +0000

Venmo ties every account to a verified phone number at signup, with no way around it. If you're testing a payments integration, setting up a business/test account, or don't want a personal number tied to a financial app, a rented number covers the initial verification.

Steps

Rent a number for Venmo — an instant rental is enough for signup.
During Venmo's signup flow, enter the rented number with its country code.
Venmo sends a verification code by SMS within seconds on a working number.
Enter the code from your rental's status page to finish verifying.

Instant or monthly?

An instant rental is enough for signup. A monthly rental only makes sense if you plan to keep logging into that account over time, since Venmo may re-verify the number on a new device.

Originally published at flo-voice1.com.

How to Verify Signal Without Using Your Personal Phone Number

sms-florin — Sat, 08 Aug 2026 13:07:17 +0000

Signal requires a phone number to register an account, and shows it can be used as your contact identifier unless you set a separate username. Testing a Signal integration, running a second account for a project, or simply wanting a number you're not attached to long-term are all common reasons to use a rented one instead of your own.

Steps

Rent a number for Signal — an instant rental covers the registration.
Open Signal, choose to register a new account, and enter the rented number with its country code.
Signal sends a registration code by SMS (occasionally by call) within seconds on a working number.
Enter the code from your rental's status page to complete registration.

One thing to know

Signal, like WhatsApp and Telegram, may re-send a code to the same number later if you log in from a new device. If you plan to keep using the account, a monthly rental keeps that number reachable instead of releasing it right after registration.

Originally published at flo-voice1.com.

How to Verify Roblox Without Using Your Personal Phone Number

sms-florin — Sat, 08 Aug 2026 13:06:44 +0000

Roblox uses phone verification to unlock certain chat and communication features, and as an account-recovery option. Parents managing a family account, developers testing against Roblox's platform, or anyone setting up a secondary account may not want their personal number attached.

Steps

Rent a number for Roblox — an instant rental is enough for the standard verification.
In Roblox's account settings, under phone verification, enter the rented number with its country code.
Roblox sends a verification code by SMS within seconds on a working number.
Enter the code from your rental's status page to finish verifying.

Instant or monthly?

An instant rental is enough for the one-time unlock. Monthly only makes sense if you expect Roblox to re-verify the number later, which isn't typical.

Originally published at flo-voice1.com.

How to Verify eBay Without Using Your Personal Phone Number

sms-florin — Sat, 08 Aug 2026 13:06:11 +0000

eBay asks for a phone number at signup, and again if it flags a login or listing as unusual — common for anyone opening a second seller account, testing an integration against eBay's API, or reselling without wanting buyers or eBay itself to have their personal number.

Steps

Rent a number for eBay — an instant rental covers the standard verification.
On eBay's phone-verification prompt, enter the rented number with its country code.
eBay texts a verification code within seconds on a working number.
Enter the code from your rental's status page to finish verifying.

Instant or monthly?

Instant is enough for a one-time check. A monthly rental makes more sense for an active seller account eBay might re-verify later.

Originally published at flo-voice1.com.

How to Verify Airbnb Without Using Your Personal Phone Number

sms-florin — Sat, 08 Aug 2026 13:06:10 +0000

Airbnb requires a verified phone number before you can book as a guest or list as a host, mainly for trust and safety. That's a hurdle if you're testing a booking integration, setting up a secondary host account for a property, or don't want your personal number tied to a listing that's publicly reachable by guests.

Steps

Rent a number for Airbnb — an instant rental is enough for the standard verification.
On Airbnb's phone-verification step, enter the rented number with its country code.
Airbnb sends a verification code by SMS within seconds on a working number.
Enter the code from your rental's status page to complete verification.

Instant or monthly?

For a host account guests may need to reach directly, a monthly rental keeps the number active for the listing's lifetime. For a one-off guest booking or a test account, an instant rental is enough.

Originally published at flo-voice1.com.

How to Verify Uber Without Using Your Personal Phone Number

sms-florin — Sat, 08 Aug 2026 12:44:16 +0000

Uber requires a phone number at signup and uses it as the primary way to confirm a trip request. That's a hassle if you're testing a ride-hailing integration, setting up a regional test account, or would rather not tie a rideshare account to your personal number.

Steps

Rent a number for Uber — an instant rental is enough for the signup verification.
On Uber's phone-verification step, enter the rented number with its country code.
Uber sends a verification code by SMS within seconds on a working number.
Enter the code from your rental's status page to finish verifying.

Instant or monthly?

An instant rental is enough for the initial verification. A monthly rental only makes sense if you plan to keep using that same number to log into the account over time, since Uber may re-send a code on a new device.

Originally published at flo-voice1.com.