API Reference

Complete documentation for the Sent API v1. Build intelligent multi-channel messaging into your applications.

Quick Start

https://api.sent.dm

x-sender-id: YOUR_SENDER_ID
x-api-key: YOUR_API_KEY

Import our complete API collection to start testing immediately:

Run in Postman: Directly fork Postman API Collection to your workspace

Import Collection: Open collection in Postman for manual import

Manage contacts with automatic channel discovery and preference tracking.

Send intelligent multi-channel messages with automatic routing and fallback.

Create and manage pre-approved message templates for WhatsApp and other channels.

API authentication methods, security best practices, and access control.

Complete request and response schemas for all API endpoints.

API error codes, format specifications, and handling patterns.

Complete troubleshooting guide with error codes, causes, and remediation steps.