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Realphonevalidation for AI agents

RealPhoneValidation checks phone numbers in real time for connectivity, carrier, and fraud risk. Sales and support teams use it to keep contact lists accurate before dialing or texting. Connect it once through Arc0, and your agent, or Claude, ChatGPT and Cursor, can use it through one MCP endpoint, limited to what each user approved.

Connect RealphonevalidationSee the 10 actions ↓
CommunicationAPI keyMCP + RESTrealphonevalidation.com
AUDIT LOG · REALPHONEVALIDATIONPOLICY: acme-support
09:41:07 · claude · u_8f2read
realphonevalidation.lookup_dnc
DNC Lookup✓ allowed · 212ms
09:41:08 · claude · u_8f2read
realphonevalidation.check_fraud
Check Phone Fraud Risk✓ allowed · 164ms
09:41:09 · claude · u_8f2write
realphonevalidation.rpv_active
Check Phone Active Status✓ approved · approved by user
EVERY REALPHONEVALIDATION CALL, ON THE RECORD
01 · USE CASES

What agents do in Realphonevalidation.

01

Validate a phone number

Check whether a phone number is active and reachable before adding it to a call list.

02

Check phone fraud risk

Look up a number's fraud risk score before allowing it through a signup flow.

03

Look up a reassigned number

Check whether a number has been reassigned to a new owner before an outbound call.

02 · ACTIONS

10 Realphonevalidation actions, graded by risk.

Every Realphonevalidation action is tagged read, write or destructive, so one policy covers the whole app and new actions inherit the right default.

read

5

Look things up. Allowed by default.

  • realphonevalidation.lookup_dnc
    DNC Lookup
  • realphonevalidation.check_fraud
    Check Phone Fraud Risk
  • realphonevalidation.validate_phone_scrub
    Validate Phone Number (Scrub)
  • realphonevalidation.validate_phone_turbo_v3
    Validate Phone Turbo V3
  • realphonevalidation.validate_phone_turbo_standard
    Validate Phone Turbo Standard

write

5

Create and change things. Allow, or ask the user first.

  • realphonevalidation.rpv_active
    Check Phone Active Status
  • realphonevalidation.email_verify
    Email Verification
  • realphonevalidation.rpv_scrub_plus
    Scrub Plus Phone Numbers
  • realphonevalidation.rpv_wireless_id
    Wireless ID
  • realphonevalidation.rpv_reassigned_number_lookup
    Reassigned Number Lookup

destructive

0

Delete, cancel or archive. Ask first, or deny outright.

  • No destructive actions.
03 · HOW IT WORKS

Realphonevalidation in three steps.

  1. 01Your users connect RealphonevalidationThey add their Realphonevalidation api key on Arc0 Connect, under your brand. It goes straight into the vault.
  2. 02You set the rulesReads run, and writes like “check Phone Active Status” can wait for the user to approve.
  3. 03Any agent can actYour agent calls Realphonevalidation through the Arc0 SDK or MCP, and so can Claude, ChatGPT and Cursor. Every call lands on the audit log.
POLICY.TS
await arc0.policies.set('realphonevalidation', {
  read: 'allow',
  write: 'ask',        // rpv_active
  destructive: 'deny',  
})

# Claude Code: the same connection, one URL
$ claude mcp add --transport http arc0 \
    https://mcp.arc0.ai/u/u_8f2
04 · AUTH AND DATA

How Realphonevalidation connects.

Users add their Realphonevalidation api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

The same Realphonevalidation connection serves your agent over MCP and your own backend over REST and the proxy, so a user connects once. How Arc0 handles credentials →

AUTH
API key
CREDENTIALS
Per-tenant encrypted vault
MODEL SEES
Results only, never credentials
AUDIT LOG
Every call, on every plan
05 · WORKS WITH

Use Realphonevalidation from any agent.

Claude
ChatGPT
Cursor
Codex
VS Code
OpenAI Agents SDK
Claude Agent SDK
Vercel AI SDK
Mastra
LangGraph
06 · RELATED

More communication apps.

Slack168 actionsMicrosoft Teams174 actionsDiscord28 actionsSlackbot101 actions2chat5 actionsAimTell15 actionsAndroid Texter11 actionsDialpad192 actions
ALL COMMUNICATION APPS →
07 · FAQ

Realphonevalidation and Arc0, answered.

Q01

Can I use Realphonevalidation with Claude, ChatGPT or Cursor?

Yes. Connect Realphonevalidation to Arc0 once, then add your Arc0 MCP URL to Claude, ChatGPT, Cursor, Claude Code or any other remote-MCP client. Each assistant only gets the Realphonevalidation actions you allow.

Q02

How do users connect Realphonevalidation?

Users add their Realphonevalidation api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

Q03

Which Realphonevalidation actions can my agent take?

10 in total: 5 read, 5 write and 0 destructive, such as “check Phone Active Status”. Your policies decide which of them each agent may call.

Q04

Can I make my agent read-only in Realphonevalidation?

Yes. Allow read actions and deny writes in the Realphonevalidation policy. Your agent can still look things up, and any write it attempts is blocked and logged.

Q05

Can my own backend call Realphonevalidation too?

Yes. The same Realphonevalidation connection is available over REST and through the Arc0 proxy, so your product and your agent share one connection per user.

Get started

Plug Realphonevalidation into your agent.

Your users connect Realphonevalidation once, under your brand. Your agent gets 10 actions behind your policies, with every call on the record.

Connect RealphonevalidationBrowse all apps →

Free to build · MCP + REST · Audit log on every plan