Sent v3 API
The Sent v3 API sends SMS, WhatsApp, and RCS messages through a single REST interface. This section documents the API's authentication, rate limits, sandbox mode, data models, and error semantics.
Quick Start
Sent API Base URL
https://api.sent.dmEvery request requires an API key. See the Authentication reference for the header, key management, and error codes. If you are new to Sent, the Quickstart Guide walks through sending your first message.
Authentication & Security
Authentication Guide
API key management, authentication methods, security best practices, and access control patterns.
Rate Limits
API rate limiting policies, quota management, and optimization strategies for high-volume applications.
Idempotency
Ensure safe retries and prevent duplicate operations with idempotency keys for reliable API integrations.
Sandbox Mode
Validate your integration without side effects: develop, debug, and deploy with confidence using sandbox mode.
API Reference
Schemas, error handling, and advanced integration patterns.
Data Models
Complete request and response schemas, field definitions, and data validation rules for all API endpoints.
Error Handling
HTTP status codes, error response formats, and best practices for robust error handling in your applications.
Error Catalog
Comprehensive troubleshooting guide with specific error codes, root causes, and step-by-step remediation instructions.
Glossary
Definitions of key terms, concepts, and terminology used throughout the Sent API documentation and platform.
Postman Collection
Import the v3 collection into Postman and start testing immediately with pre-configured requests, example bodies, and documentation links:
Run in Postman: Directly fork Sent DM API v3 to your workspace
Import Collection: Open collection in Postman for manual import
Support & Resources
- Quickstart Guide - Complete onboarding walkthrough
- Support Center - FAQs, troubleshooting, and community resources
- API Status - Real-time service status and incident reports
- Support email: support@sent.dm