TeleSign MCP. Prevent Fraud. Verify Identity. Score Risk.
TeleSign helps you validate user identity instantly using phone number intelligence, risk scoring, and multi-channel verification. It prevents fraud at sign-up by checking everything from carrier details to deactivation status, giving your application confidence in every new user.
Give Claude and any AI agent real-world access
The tool calculates a detailed risk score for any given number, helping you filter out suspicious accounts.
You can send verification codes via SMS, automated voice calls, or push notifications to confirm the user has access to that line.
It identifies a number's carrier, type (mobile/landline), and location intelligence, giving you full context on the line itself.
You can check if a phone number is currently active or if it has been deactivated or ported away from its original service.
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What AI agents can do with TeleSign: 10 Tools for Identity Verification
These tools let your agent run comprehensive identity checks on phone numbers, scoring risk, verifying ownership via SMS or voice, and checking line status.
Make your AI actually useful.
Add this MCP to Claude, Cursor, or Windsurf and your AI stops guessing. It gets real tools to look things up, take action, and handle the stuff you keep doing by hand.
Start using TeleSign MCPCheck Deactivation
Confirms whether a specific phone number is currently active or if it has been deactivated by the carrier.
Check Telesign Status
Verifies the API connectivity and overall operational status of the TeleSign service.
Check Verification
Retrieves the current verification status for a user who has already attempted an...
Get Phone Id
Gathers core identifying information about a phone number, such as its country code...
Get Phone Type
Determines the nature of the phone line—whether it is mobile, landline, or another...
Score Phone
Analyzes a phone number and outputs a numerical risk score based on known fraud patterns.
Send Push Verification
Triggers an identity verification request via a push notification, which is useful for app-based signups.
Send Sms
Sends a standard text message (SMS) containing a unique one-time password to the...
Send Verification
Handles the general process of sending out a required verification code for account...
Send Voice Verification
Delivers the necessary verification codes using an automated voice call to the...
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Turn any API into an MCP. Import a spec, define Agent Skills, or deploy with MCPFusion.
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The headache of manual identity checks is real.
Right now, when a user tries to sign up, you're probably forcing them through multiple steps: they enter the number, then your system sends an SMS, waits for the code, and if it fails, someone has to manually look into *why*. It's tedious copy-pasting across three different tabs—the form, the message log, and a separate fraud dashboard.
With this MCP, that whole sequence becomes one smart conversation. Your agent runs all those checks automatically: checking the risk score, confirming the phone type, and initiating verification in parallel. The result isn't just data; it's an instant decision you can act on.
TeleSign gives your agent complete number intelligence.
You stop manually checking documentation pages to see if a number is corporate or personal, or if it was recently ported. The get_phone_id tool pulls all that technical data directly into the context of your chat flow, eliminating multiple API calls and manual investigation.
This means you build trust into your product from day one. Your system moves past simple validation; it achieves deep, verifiable identity assurance with zero added friction for your developer or support team.
What TeleSign MCP does for your AI
Need to know if a user's phone number is real and safe? This MCP connects your agent to TeleSign’s full suite of identity tools. You can get deep insights into any number—like its carrier, type, or even location—before asking for more data. Need proof the user owns the line? Send an SMS code, a voice call, or use push notifications for verification.
Plus, it calculates a risk score to tell you how likely that phone is involved in fraud. You can also check if a number has been deactivated or ported recently. When you connect this MCP via Vinkius, your AI client gains access to all these checks, letting you build robust sign-up flows without leaving your chat window.
019dd170-562a-70a9-9ce7-afb545197b9f How to set up TeleSign MCP
The bottom line is your agent gets immediate, actionable data on phone numbers that prevents bad actors from getting into your system.
First, your agent passes the target phone number to this MCP.
The tool runs several checks—like scoring the risk and checking deactivation status—and then sends back a comprehensive JSON report with all the details.
Your AI client reads the report, allowing you to make an automated decision about whether to accept or deny the user sign-up.
Who uses TeleSign MCP
This is for fraud prevention teams and product managers who deal with high sign-up volumes. If manual identity checks are slowing down your user onboarding flow, you need this MCP.
You integrate the risk scoring into the main signup form to improve conversion rates by failing fast on bad accounts.
You build automated pipelines that run number intelligence and verification checks before any user account is provisioned in production.
You use the deactivation check and phone type data to spot patterns of synthetic identity fraud or bulk sign-up abuse.
Benefits of connecting TeleSign MCP
Reduce sign-up fraud immediately. Instead of just checking if a number is valid, you use the score_phone tool to calculate risk levels and reject high-risk accounts before they hurt your business.
Support multiple verification paths. You aren't limited to SMS; you can send codes via automated voice calls or push notifications, giving flexible options for different user flows.
Get full line context upfront. The get_phone_id tool gives your agent the carrier and location details instantly, which helps differentiate between a real, active business number and a burner phone.
Handle account lifecycle checks. You can use check_deactivation to confirm if a number that was previously valid is still in service, preventing support headaches months down the line.
Automate complex workflows. By running multiple tools like score_phone and get_phone_type together, you build a single, smart decision point for your agent.
TeleSign MCP use cases
Onboarding a new B2B user.
A Product Manager asks their agent to onboard a high-value client. The agent first uses score_phone and get_phone_type to confirm the number is corporate, then sends an SMS code using send_sms for verification. If both checks pass, the account is created.
Debugging suspicious sign-up spikes.
A Fraud Analyst needs to investigate a sudden spike in failed signups. They use check_deactivation on the suspect numbers and run get_phone_id repeatedly to see if they share common carrier patterns, helping pinpoint bot activity.
Testing internal system health.
A DevOps Engineer needs to confirm that their new signup microservice is talking correctly to TeleSign. They use check_telesign_status first and then run check_verification on a test number to ensure the entire flow works.
Handling enterprise app logins.
An agent needs to authenticate an employee using company devices. Instead of SMS, they opt for send_push_verification, ensuring that only users with the current corporate app can proceed, securing the account flow.
TeleSign MCP tradeoffs
What to watch out for, and the recommended way to handle each one.
Only checking if a number is 'valid'.
Thinking that just because send_sms works, the user must be legitimate. This ignores fraud risk and line intelligence.
Always start by running score_phone and get_phone_type. If the risk score is high or the phone type is suspicious, don't waste time sending codes.
Assuming a number hasn't been ported.
A user reports their account was hijacked after they changed carriers. Simply checking for an active status won't reveal if the number recently moved services.
Use check_deactivation to get history on porting and deactivation events, confirming the line's entire service history.
Relying solely on SMS codes.
Designing a flow that breaks if users are in areas with poor cellular reception. This limits your ability to capture high-quality identities.
Build redundancy by offering multiple methods: try send_voice_verification first, then fall back to sending an SMS via send_sms.
When to use TeleSign MCP
Use this MCP if your core problem is identity confidence. You need assurance that the phone number belongs to a real person, is currently active, and isn't associated with fraud. Don't use it if you simply need to send bulk messages; for that, an SMS gateway tool will suffice. If you only need basic formatting or data cleaning on existing user IDs, a standard database connector works better. However, if your workflow involves risk assessment (i.e., 'is this person safe enough to proceed?'), then TeleSign is the right choice because it provides scores and intelligence beyond simple validation.
Frequently asked questions about TeleSign MCP
How does TeleSign MCP help prevent fraud? +
It calculates a risk score (score_phone) and uses phone intelligence to identify suspicious patterns, allowing you to reject high-risk signups automatically before they enter your system.
Can I send verification codes using multiple methods with TeleSign MCP? +
Yes. You can use the dedicated tools for SMS (send_sms), voice calls (send_voice_verification), or push notifications (send_push_verification) to cover all user scenarios.
What is phone intelligence in TeleSign MCP? +
Phone intelligence refers to the deep data about a number, including its carrier, type (mobile/landline), and location. The get_phone_id tool provides this context instantly.
Does TeleSign MCP check if a phone number is still active? +
Yes, the check_deactivation tool verifies the current status of a number, confirming it hasn't been deactivated or ported away from its original service.