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HelloVello API

Production backend for WhatsApp Cloud API messaging, campaigns, conversations, contacts, templates, media, CRM, automation, webhooks, analytics, and account operations.

Base URL
http://api.msgdaddy.com
Environment
development
Health check
/api/health
Server time
2026-07-10T20:41:03.303Z

Core Endpoints

Authentication/api/auth

Login, registration, Google OAuth, and session token operations.

Conversations/api/conversations

Inbox, thread state, assignment, and conversation lifecycle APIs.

Messages/api/messages

Send and retrieve WhatsApp messages through connected business numbers.

Contacts/api/contacts

Customer profiles, labels, import, filtering, and contact metadata.

Templates/api/templates

WhatsApp template sync, creation, status, and template messaging support.

Campaigns/api/broadcasts

Broadcast campaign creation, scheduling, delivery, and reporting.

Media/api/media

Media upload, retrieval, and WhatsApp media handling.

Analytics/api/analytics

Operational metrics for messaging, delivery, and account activity.

CRM/api/crm

Lead boards, pipeline workflows, notes, and customer management.

Automation/api/flows /api/ai-flow

Bot flows, AI flow execution, auto replies, and quick replies.

WhatsApp Account/api/whatsapp-account

Business account, WABA, phone number, and profile operations.

Webhooks/api/webhook

Meta webhook verification and inbound event ingestion.

Integration Details

Authentication
  • Protected endpoints expect a bearer token.
  • Use Authorization: Bearer <token>.
  • API-key routes are available under /api/api-keys.
Request Format
  • JSON payloads are accepted with Content-Type: application/json.
  • Maximum standard JSON body size is 10 MB.
  • Webhook JSON uses raw body verification for signature validation.
Rate Limits
  • General API limit: 500 requests per 15 minutes in production.
  • Login and registration limit: 20 requests per 15 minutes in production.
  • Limits are higher in development mode.
Public System Links 
curl -H "Authorization: Bearer <token>" \
  -H "Content-Type: application/json" \
  http://api.msgdaddy.com/api/messages