phone-calling（打电话）

Ringez Phone Calling API

Make affordable international phone calls from anywhere. No hidden fees, no subscriptions — just pay for the minutes you use.

What is Ringez?

Ringez is a simple, privacy-focused international calling service that lets you make phone calls to 200+ countries without complicated setups or expensive plans.

Perfect for:

• Calling family abroad
• Business calls to international clients
• AI agents making reservations or appointments
• Quick calls without buying a calling plan

Quick Start Guide

1. Create an Account

First, check if your email is already registered:

POST https://ringez-api.vercel.app/api/v1/auth/check-email
Content-Type: application/json

{"email": "you@example.com"}

Response:

• new_user → Continue to OTP verification
• existing_user → Login with password

For New Users: Verify with OTP

Step 1: Request OTP

POST https://ringez-api.vercel.app/api/v1/auth/send-otp
Content-Type: application/json

{"email": "you@example.com"}

Step 2: Verify OTP

POST https://ringez-api.vercel.app/api/v1/auth/verify-otp
Content-Type: application/json

{
  "email": "you@example.com",
  "otp": "123456"
}

Response:

{
  "session_id": "sess_abc123xyz",
  "user": {
    "email": "you@example.com",
    "balance_minutes": 5
  }
}

Save the session_id — you will need it for all API calls.

For Existing Users: Login

POST https://ringez-api.vercel.app/api/v1/auth/login
Content-Type: application/json

{
  "email": "you@example.com",
  "password": "your-password"
}

2. Check Your Balance

See how many minutes you have before making a call:

GET https://ringez-api.vercel.app/api/v1/auth/me
X-Session-ID: sess_abc123xyz

Response:

{
  "balance_minutes": 5,
  "balance_usd": 0,
  "email": "you@example.com"
}

3. Make a Phone Call

Use the idempotency_key to prevent accidental duplicate calls:

POST https://ringez-api.vercel.app/api/v1/calls/initiate
X-Session-ID: sess_abc123xyz
Content-Type: application/json

{
  "to_number": "+919876543210",
  "idempotency_key": "sess_abc123xyz_1700000000000_xyz789"
}

Response (Success):

{
  "call_id": "call_xyz789",
  "status": "initiated",
  "mode": "bridge",
  "to_number": "+919876543210",
  "from_number": "+17623713590",
  "twilio_call_sid": "CAxxxxx"
}

Response (Duplicate Call):

{
  "alreadyInitiated": true,
  "callSid": "CAxxxxx"
}

Call Modes Explained

Ringez supports two ways to make calls:

Bridge Mode (Default)

• How it works: Calls your phone first, then connects you to the destination
• Best for: Personal calls where you want to talk
• Your phone: Will ring first

Direct Mode

• How it works: Calls the destination directly
• Best for: AI agents, automated calls, or when you do not want your phone to ring
• Your phone: Does not ring

Force Direct Mode:

POST /api/v1/calls/initiate
X-Session-ID: sess_abc123xyz
Content-Type: application/json

{
  "to_number": "+919876543210",
  "mode": "direct"
}

Preventing Duplicate Calls

When making calls through an API, network delays or retries can accidentally create multiple calls. Use an idempotency key to prevent this.

What is an Idempotency Key?

A unique identifier for each call attempt. If you use the same key within 5 minutes, the API returns the original call instead of creating a new one.

How to Use It

Generate a unique key for each user action:

const idempotencyKey = `${sessionId}_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`;
// Example: sess_abc123_1700000000000_xyz789abc

Important Notes

• 5-minute window: Same key within 5 minutes returns the existing call
• After 5 minutes: Same key creates a new call
• Generate fresh keys: Create a new key for each button click, not for API retries
• Response: If duplicate detected, you get {alreadyInitiated: true, callSid: "..."}

Pricing

Pay only for what you use. No monthly fees, no subscriptions.

USD Plans

INR Plans

Billing: Rounded up to the nearest minute. A 2-minute 30-second call = 3 minutes charged.

Managing Active Calls

Check Call Status

See if your call is still ringing, connected, or completed:

GET https://ringez-api.vercel.app/api/v1/calls/call_xyz789
X-Session-ID: sess_abc123xyz

Response:

{
  "call_id": "call_xyz789",
  "status": "in-progress",
  "duration": 120,
  "estimated_cost": {
    "minutes": 2,
    "amount": 0.25,
    "currency": "USD"
  }
}

End a Call Early

Hang up a call before it finishes:

DELETE https://ringez-api.vercel.app/api/v1/calls/call_xyz789
X-Session-ID: sess_abc123xyz

Navigate Phone Menus (DTMF)

Press numbers during a call (useful for bank menus, customer support):

POST https://ringez-api.vercel.app/api/v1/calls/call_xyz789/actions
X-Session-ID: sess_abc123xyz
Content-Type: application/json

{
  "action": "dtmf",
  "parameters": {
    "digits": "1"
  }
}

Common DTMF uses:

• {"digits": "1"} — Press 1 for English
• {"digits": "1234"} — Enter PIN
• {"digits": "w"} — Wait 0.5 seconds

Call History

See your past calls:

GET https://ringez-api.vercel.app/api/v1/calls?limit=10&offset=0
X-Session-ID: sess_abc123xyz

Response:

{
  "calls": [
    {
      "call_id": "call_abc123",
      "to_number": "+919876543210",
      "status": "completed",
      "duration": 300,
      "cost": 0.375,
      "started_at": "2026-02-09T10:00:00Z"
    }
  ],
  "pagination": {
    "total": 25,
    "has_more": true
  }
}

Use Cases

Personal Call to Family

User: Call my mom in India
AI: I will help you call India. First, let me check your balance...
      You have 15 minutes available.
      Calling +91 98765 43210 now...
      
AI: Your phone is ringing. Pick up and I will connect you.

AI Agent Making a Reservation

User: Book a table at Taj Restaurant for 7 PM
AI: I will call Taj Restaurant for you.
      
      [AI uses direct mode — your phone does not ring]
      
AI: Calling +91 12345 67890...
      
AI: Hello, I would like to make a reservation for 2 people at 7 PM today.
      
AI: ✅ Reservation confirmed! Table for 2 at 7 PM under your name.

Important Information

Free Minutes

New accounts get 5 free minutes to test the service. These are for testing only — please add credits for regular use.

Adding Credits

This skill cannot add credits. To add minutes:

1. Visit: https://ringez.com/wallet
2. Pay with PayPal (USD) or UPI (INR)
3. Credits appear instantly

Why? Payment processing requires secure browser redirects and PCI compliance that APIs cannot handle.

Low Balance Handling

If someone tries to call with insufficient balance:

AI: Let me check your balance...
      
      You have 0 minutes left. You will need to add credits first.
      
      💳 Add credits at: https://ringez.com/wallet
      
      The rates are:
      • USA: $0.05/min
      • India: $0.08/min
      • UK: $0.06/min
      
      Come back after adding credits and I will make that call!

API Reference Quick Reference

Support

Need help? Contact us at support@ringez.com

About Ringez: Built by an independent creator, not a big corporation. Your support keeps the service running! 🙏