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  1. Start Guide
  • Start Guide
    • Getting Started
    • API Reference
  • Partner
    • /v1/partner/info
      GET
    • /v1/partner/config/{domain}
      GET
  • Project
    • /v1/projects
      POST
    • /v1/projects
      GET
    • /v1/projects/{id}
      PUT
    • /v1/projects/{id}
      GET
  • Sendzen.API
    • GetSwaggerJson
      GET
  • WABA
    • /v1/waba
      GET
    • /v1/waba
      POST
    • /v1/waba/{projectId}
      POST
  • APIKey
    • /v1/apikey/{project}
      GET
  • Auth
    • /v1/auth/login
      POST
    • /v1/auth/register
      POST
  • Schemas
    • Schemas
      • AccountLoginRequest
      • APIKeyDto
      • AccountRegisterRequest
      • CreateOrUpdateProjectRequest
      • Error
      • PartnerConfigDto
      • ErrorResponse
      • LoginResponse
      • PartnerInfoDto
      • ProjectDetailDto
      • ProjectWABADetail
      • WABADetail
      • WABASignUp
      • WABADto
  1. Start Guide

API Reference

Welcome to the SendZen API reference. This page is a quick cover that orients you before you dive into individual endpoints.
SendZen is a developer-first WhatsApp API with clean SDKs, predictable webhooks, real-time logs, and a test mode for safe experiments.

Base URL#

text https://api.sendzen.io
Production traffic uses HTTPS only.

Authentication#

All requests must be authenticated.
Scheme: Bearer token
Header: Authorization: Bearer YOUR_API_KEY
Scopes: TODO add scopes if you expose them
Rotate keys in the dashboard if they leak.

SDKs and tools#

Use cURL or an SDK to start fast.
All examples in this reference are reproducible with cURL, Node, and Python out of the box
Real-time request and response logs are visible in the dashboard for debugging

Core resources#

Common resources you will find in the left nav:
Messages
Send text, media, templates, utility notifications, and authentication OTP. Delivery and read receipts flow to your webhook. Endpoints: POST /v1/messages and related.
Templates
Create and manage WhatsApp templates via API.
Webhooks
Subscribe to events like message.sent, message.delivered, message.read, and inbound messages. Auto retries are supported.
Voice
WhatsApp Voice support is available.
Accounts and onboarding
WhatsApp Business App numbers are supported, and Embedded Signup is available.

Request format#

Content type: application/json

Webhooks#

Configure a single endpoint to receive events. Respond with 2xx quickly.
Retries: Automatic if your endpoint times out or returns 5xx
Test mode: Simulate events without contacting real users

Errors#

APIs return human-readable messages with stable codes.
Client errors use 4xx
Server errors use 5xx
Include the request identifier from response headers when contacting support
Logs show the full request and response to speed up debugging

Support#

Community and email support for integration questions
Priority support with live chat for paying customers
Enterprise onboarding for larger deployments
Add links to Contact, Pricing, SLA, and Status once published.
SendZen
Modified at 2025-09-25 10:31:00
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