Integrate WhatsApp messaging into your applications. Send messages, manage contacts, trigger automations, and receive real-time webhooks — all through a single, authenticated REST API.
# Authenticate with your API key curl -X POST https://app.app-ening.com/api/v1/public/messages \ -H "X-Api-Key: apn_your_key_here" \ -H "Content-Type: application/json" \ -d '{ "to": "+919876543210", "templateName": "order_confirmation", "templateLanguage": "en", "parameters": ["John", "ORD-12345"] }'
Three steps from sign-up to your first API call.
Sign up at app.app-ening.com and choose a plan that supports API access (Pro or above). Pro plans can add API access as an add-on; Business and higher plans include it.
Go to the Developer Portal in your admin console. Create a key with Live or Sandbox scope. The key is shown once — save it securely.
Include your key in the X-Api-Key header. All endpoints are under /api/v1/public/. Try the interactive playground to test live.
15 resource types organized into core and advanced groups. All accessible through a single API key.
Create, update, list, tag, and search contacts. Bulk import up to 1,000 at a time.
Send text, template, media, and interactive messages. Preview costs before sending.
Create, submit for approval, and manage WhatsApp message templates.
List conversations, view message history, reply, assign to team members, and close.
Register URLs to receive real-time events (message received, delivered, read, etc.) with HMAC-SHA256 signatures.
Check your plan, feature limits, wallet balance, and transaction history.
Batch create contacts (up to 1,000) and send messages (up to 100 recipients) asynchronously.
Create automation rules that trigger actions when events occur (e.g., tag added, message received).
Build multi-step message sequences with timed delays and enroll contacts automatically.
Trigger, monitor, and list visual automation journeys. View execution run history.
Simplified configurations for common patterns: appointment reminders, welcome messages, re-engagement.
Create and manage voice call scripts with text-to-speech (TTS) or IVR menu configurations.
Initiate voice calls, track call history, and check usage.
Create batch voice call campaigns to contact lists using published scripts.
API access is available as an add-on for Pro plans, and included on Business plans and above. Rate limits and quotas scale with your plan.
| Plan | API Calls / Month | Rate Limit | API Keys |
|---|---|---|---|
| Pro | 10,000 | 10 req/s | 2 |
| Business | 100,000 | 30 req/s | 5 |
| Business+ | 500,000 | 60 req/s | 10 |
| Premium | Unlimited | 100 req/s | 15 |
| Premium+ | Unlimited | 200 req/s | 20 |
| Scale | Unlimited | 500 req/s | 50 |
Free and Starter plans do not include API access. View all plans
Everything you need to build, test, and debug your integration.
Full OpenAPI documentation with request/response schemas, authentication details, and code examples.
Open ReferenceTry every endpoint live with Swagger UI. Fill in parameters, send requests, and inspect responses in your browser.
Open PlaygroundImport our pre-built collection into Postman with all endpoints, example payloads, and authentication pre-configured.
Download CollectionStep-by-step API flows for popular integration scenarios.
Create a contact on booking, send a confirmation, then schedule a reminder 24 hours before.
Your website form creates a contact via API and sends an instant WhatsApp welcome message.
Import up to 1,000 contacts at once from a CSV or database, then verify results.
Send a marketing or utility campaign to a filtered list. Preview costs first, then send in batch.
Your e-commerce system triggers a WhatsApp nudge when a customer abandons checkout.
Register webhooks to receive instant notifications when messages are delivered, read, or replied to.
All errors return a consistent JSON structure with a machine-readable code and human-readable message.
{
"error": {
"code": "RATE_LIMIT_EXCEEDED",
"message": "API rate limit exceeded. Retry after 1 second.",
"docs": "https://app.app-ening.com/api-docs#errors"
}
}
| Code | HTTP Status | Description |
|---|---|---|
INVALID_API_KEY |
401 | X-Api-Key header is missing, invalid, revoked, or expired |
RATE_LIMITED |
429 | Per-second rate limit exceeded. Check Retry-After header. |
QUOTA_EXCEEDED |
429 | Monthly API call quota exceeded |
PLAN_UPGRADE_REQUIRED |
402 | Your plan does not include this feature |
INVALID_REQUEST |
400 | Request body is invalid or missing required fields |
RESOURCE_NOT_FOUND |
404 | The requested resource does not exist |
CSW_VIOLATION |
422 | Cannot send free-form message outside the 24-hour customer service window. Use a template instead. |
Create an account, generate your API key, and start building.