API & webhooksConnect conversations to your systems.
Explore application APIs and webhook events for business messaging integrations.
POST https://your-system.example/hooks
SMGW-Signature: t=1729000000,v1=9f2c…
event: "message.inbound"
channel: "whatsapp"
text: "Is my repair ready?"
✓Delivered · 200 OKSigned with HMAC-SHA256
API keys
Booking sync••••••••••••3f9a · created today
ActiveReports export••••••••••••81c2 · read only
ActiveOld website form••••••••••••0d47 · revoked
Revoked
✓Key shown onceStored hashed · 60 requests/minute
Scoped API keys
Keys are limited to chosen permissions, rate-limited and shown only once.
POST https://your-system.example/hooks
SMGW-Signature: t=1729000000,v1=9f2c…
event: "message.inbound"
channel: "whatsapp"
text: "Is my repair ready?"
✓Delivered · 200 OKSigned with HMAC-SHA256
Signed webhooks
Events such as inbound messages are delivered with an HMAC-SHA256 signature.
Repair statusGoogle Sheet · synced just now
R-1001iPhone 13Ready
R-1002Galaxy S23In progress
R-1003iPad AirWaiting for part
Status changed to ReadyTemplate sent to the customer
Data from your systems
Look up records from your sheets or connected systems inside a conversation.
01Public API
Build integrations around supported messaging, contact, conversation and template operations with application-issued credentials.
API keys
Booking sync••••••••••••3f9a · created today
ActiveReports export••••••••••••81c2 · read only
ActiveOld website form••••••••••••0d47 · revoked
Revoked
✓Key shown onceStored hashed · 60 requests/minute
02Webhook events
Connect supported events to your own workflows. Validate requests and handle retries in your integration.
POST https://your-system.example/hooks
SMGW-Signature: t=1729000000,v1=9f2c…
event: "message.inbound"
channel: "whatsapp"
text: "Is my repair ready?"
✓Delivered · 200 OKSigned with HMAC-SHA256
03Keep credentials protected
Use server-side integration code and appropriate permissions. Never put secret API credentials into a public website.
app.smgateway.com
POST https://your-system.example/hooks
SMGW-Signature: t=1729000000,v1=9f2c…
event: "message.inbound"
channel: "whatsapp"
text: "Is my repair ready?"
✓Delivered · 200 OKSigned with HMAC-SHA256
For developersConnect conversations to your systems.
Use the public API and signed webhooks to react to new messages, follow delivery status and keep your own records up to date.
Create your account ↗Illustrative photo. Interface details use sample data. Product screens are from the SM Gateway application with sample data. Cards and photos are illustrative.
