API Reference

A REST API over JSON. All requests require a Bearer API key and return JSON.

Base URL

All public API requests are made against:

https://api.cmdsend.com/v1

Emails and Webhooks — public, versioned

Every request needs an API key in the Authorization header:

Authorization: Bearer cmd_your_api_key

See the full guide in Authentication.

Send a JSON body with Content-Type: application/json on POST/PATCH requests. Response bodies are always JSON.

Non-2xx responses share a consistent shape — see the Errors reference.