Developer platform

Add reliable messaging to your product

Send transactional SMS through REST, manage API credentials, and diagnose requests without leaving the MainMsg workspace.

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POST /v1/messages

curl -X POST https://api.mainmsg.com/v1/messages \
  -H "Authorization: Bearer $MAINMSG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "sender_id": "APEXRETAIL",
    "to": "+255712345678",
    "message": "Your order has shipped!"
  }'

Integration toolkit

Build, observe, and maintain

The essentials for taking an integration from its first request into daily operation.

REST API

Trigger transactional messages from products and internal systems.

API Keys & Projects

Organize integrations into API projects and manage their credentials.

Request Logs

Full visibility into every API call with response times and status codes.

Bearer authentication

Authenticate requests with credentials managed inside your API project.

Usage visibility

Monitor API activity alongside organization messaging usage.

Troubleshooting context

Use request logs and message status information to investigate integration behavior.

Ready to improve how your business communicates?

Create your organization, choose a plan, and start sending reliable messages through campaigns or APIs.

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