WhatsApp API Documentation

Hier beginnen

Your first request in four steps

Connect and enable WhatsApp for a supported mobile.

Confirm the recipient with the number-check endpoint.

Send with waonly=yes.

For inbound messages, activate retrieval, synchronize, then call /getwa.

The secure SMSMobileAPI mobile app connecting a phone to the web dashboard and REST API for SMS and call operations — Encrypted mobile-to-platform connection

Official mobile application

The secure bridge between your phone, dashboard and API.

SMS and call operations pass through the official SMSMobileAPI app installed on your connected phone. The app securely pairs the device with your account, synchronizes authorized events and links the mobile network to the dashboard and REST API.

1Mobile appPairs the phone and its SIM 2Encrypted linkAuthenticates and protects data in transit 3Dashboard & APIControls workflows and activity

Signed releases distributed through the official Google Play and Apple App Store listings
Google and Apple platform review, signing and distribution controls
Secure device pairing, HTTPS transport and authenticated API access
Only the permissions required for the mobile features you enable

Get the official SMSMobileAPI app on Google Play

Download the official SMSMobileAPI app on the Apple App Store

Capabilities depend on the permissions and background access allowed by Android or iOS.

Authentifizierung

Keep credentials on your server

Use apikey for direct integrations. OAuth2 client credentials are available for server-side applications; request a token and send it as Authorization: Bearer ACCESS_TOKEN.

POST · GET

Send a WhatsApp message

ENDPOINThttps://api.smsmobileapi.com/sendsms

Sends a WhatsApp text or supported media through the connected environment.

When to use it

Use it for individual recipients or a dashboard contact group.

Parameter

Name	Typ	Requirement	Beschreibung
`apikey`	Zeichenkette	Erforderlich	Your API key; omit when using a Bearer token.
`recipients`	phone	Erforderlich	Country code plus number, without + or 00.
`message`	Zeichenkette	Erforderlich	Text body; multiple lines are supported.
`waonly`	Ja	Erforderlich	Must be yes to request WhatsApp-only delivery.
`url_media`	HTTPS URL	Optional	Public PDF, document, archive or JPG/PNG URL.
`url_media_shorted`	Ja	Optional	Use a shortened download URL with PDF preview mode.
`pdf_with_image`	Ja	Optional	Add an image preview for a PDF.
`encrypt_message`	Ja	Optional	Require recipient-side decryption.
`contactGroup`	GUID	Optional	Send to every contact in a dashboard group.

Request example

cURL

curl -X POST "https://api.smsmobileapi.com/sendsms?waonly=yes" \
  -d "apikey=YOUR_API_KEY" \
  -d "recipients=191728660" \
  --data-urlencode "message=Your order is ready."

Beispielantwort

JSON

{
  "result": {
    "error": 0,
    "sent": "1",
    "id": "MESSAGE_GUID",
    "send_with_whatsapp": "1"
  }
}

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Good to know

Supported media URLs must be public HTTPS resources.
WhatsApp formatting: *bold*, _italic_, ~strikethrough~ and triple-backtick monospace.

POST · GET

Resend an unsent WhatsApp message

ENDPOINThttps://api.smsmobileapi.com/resendwa/

Retries a WhatsApp message that currently has an error status.

When to use it

Use it after diagnosing a failed WhatsApp log entry.

Parameter

Name	Typ	Requirement	Beschreibung
`apikey`	Zeichenkette	Erforderlich	Ihr API-Schlüssel.
`guid`	Zeichenkette	Erforderlich	GUID of the failed message.

Request example

cURL

curl "https://api.smsmobileapi.com/resendwa/?apikey=YOUR_API_KEY&guid=MESSAGE_GUID"

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Good to know

Only failed messages are eligible for resend.

ERHALTEN

Activate inbound retrieval

ENDPOINThttps://api.smsmobileapi.com/getwa/active/

Activates, deactivates or toggles WhatsApp message retrieval.

When to use it

Call it once before using inbound WhatsApp synchronization.

Parameter

Name	Typ	Requirement	Beschreibung
`apikey`	Zeichenkette	Erforderlich	Ihr API-Schlüssel.
`statut`	0 \| 1 \| x	Optional	1 activates, 0 deactivates, x or omission toggles the current state.

Request example

cURL

curl "https://api.smsmobileapi.com/getwa/active/?apikey=YOUR_API_KEY&statut=1"

Beispielantwort

JSON

{
  "success": true,
  "read_message_active": 1,
  "status_note": "Activated"
}

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Good to know

Inbound retrieval is disabled by default for privacy.

ERHALTEN

Synchronize inbound messages

ENDPOINThttps://api.smsmobileapi.com/getwa/synchronisation/

Requests a fresh WhatsApp synchronization before retrieval.

When to use it

Call it immediately before /getwa when your application needs current inbound data.

Parameter

Name	Typ	Requirement	Beschreibung
`apikey`	Zeichenkette	Erforderlich	Ihr API-Schlüssel.

Request example

cURL

curl "https://api.smsmobileapi.com/getwa/synchronisation/?apikey=YOUR_API_KEY"

Beispielantwort

JSON

{
  "error": "0",
  "messages": "synchronized",
  "expire_at": "2026-03-11 12:27:00",
  "expire_at_unix": "1773232020"
}

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Good to know

Synchronization is for receiving messages only. Do not call it before sending.

ERHALTEN

Retrieve WhatsApp messages

ENDPOINThttps://api.smsmobileapi.com/getwa

Returns synchronized inbound WhatsApp messages.

When to use it

Use it after activating and synchronizing inbound retrieval.

Parameter

Name	Typ	Requirement	Beschreibung
`apikey`	Zeichenkette	Erforderlich	Ihr API-Schlüssel.
`before`	Unix timestamp	Optional	Return records before this timestamp.
`date`	JJJJ-MM-TT	Optional	Return records for one date.
`message_type`	text \| audio	Optional	Filter text messages or audio messages converted to text; omit for both.

Request example

cURL

curl "https://api.smsmobileapi.com/getwa/?apikey=YOUR_API_KEY&message_type=text"

Beispielantwort

JSON

{
  "date": "2026-03-11",
  "hour": "12:27:00",
  "timestamp": "1773232020",
  "number": "19176728660",
  "contact": "SMSMobileAPI",
  "message": "When will I receive my order?",
  "guid": "652fcfc0-12a8-46f5-b5ba-9391135b8b4c"
}

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ERHALTEN

Check a WhatsApp number

ENDPOINThttps://api.smsmobileapi.com/whatsapp/checknumber/

Checks whether a phone number is available on WhatsApp.

When to use it

Use it before sending to reduce avoidable failures.

Parameter

Name	Typ	Requirement	Beschreibung
`apikey`	Zeichenkette	Erforderlich	Ihr API-Schlüssel.
`recipients`	phone	Erforderlich	Country code plus number, without + or 00.

Request example

cURL

curl "https://api.smsmobileapi.com/whatsapp/checknumber/?apikey=YOUR_API_KEY&recipients=19176728660"

Beispielantwort

JSON

{
  "contact_found_on_whatsapp": "yes",
  "recipients": "19176728660"
}

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POST

Create an OAuth2 access token

ENDPOINThttps://api.smsmobileapi.com/oauth2/token

Exchanges client credentials for a Bearer token.

When to use it

Use it for server-to-server integrations where short-lived credentials are preferred.

Parameter

Name	Typ	Requirement	Beschreibung
`grant_type`	Zeichenkette	Erforderlich	Must be client_credentials.
`client_id`	Zeichenkette	Erforderlich	Client ID from the dashboard.
`client_secret`	Zeichenkette	Erforderlich	Client secret from the dashboard.

Request example

cURL

curl -X POST "https://api.smsmobileapi.com/oauth2/token" \
  -H "Content-Type: application/x-www-form-urlencoded" \
  -d "grant_type=client_credentials" \
  -d "client_id=YOUR_CLIENT_ID" \
  -d "client_secret=YOUR_CLIENT_SECRET"

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Good to know

Keep the client secret on your server. Never include it in mobile or browser code.

Fehlerbehebung

Errors and safe retries

Read the HTTP status and the JSON error field before retrying. Do not retry validation or authentication failures without correcting the request first.

HTTP	Code	What to do
400	`missing_parameter`	A required parameter is empty or absent. Check the parameter table for the endpoint.
403	`invalid_apikey`	The API key is unknown, expired or not authorized for the requested feature.
429	`too_many_requests`	Requests are arriving too quickly. Wait, then retry with exponential backoff.
500	`server_error`	The service could not complete the request. Keep the response and contact support if it persists.

Retry ruleRetry only transient 429 and 5xx responses. Start after 1 second, then back off to 2, 4 and 8 seconds.

Brauchen Sie Hilfe?

Bring the request context—not your secrets.

Share the endpoint, timestamp, HTTP status and sanitized response. Never include API keys, tokens or private message content.

Contact API support →

WhatsApp API documentation

Your first request in four steps

The secure bridge between your phone, dashboard and API.

Keep credentials on your server

Parameter

Request example

Beispielantwort

Parameter

Request example

Parameter

Request example

Beispielantwort

Parameter

Request example

Beispielantwort

Parameter

Request example

Beispielantwort

Parameter

Request example

Beispielantwort

Parameter

Request example

Errors and safe retries

Bring the request context—not your secrets.