Onsello Open API

Seamless Integrations with
Open API

Empower your hospitality and travel business. Connect your systems seamlessly with PMS, OTAs, GDS, Payment Gateways, and more using our robust, developer-friendly API.

Get Started

GET /api/v1/channels/connect

Authorization: Bearer sk_live_your_token_here

100+

API Endpoints

10+

Channel Types

99.9%

Uptime SLA

Live

Data Sync

Connectivity

Connect with Every Channel

Onsello Open API supports seamless integration with various essential systems, covering all your hotel and travel business needs globally.

Property Management

Connect your internal Property Management System (PMS) directly with Onsello.

Connected

OTA Platforms

Sync room inventory, dynamic rates, and incoming bookings with leading global OTAs.

Real-time

Payment Gateways

Support for multiple payment gateways. Process transactions securely and swiftly.

Secure

GDS Networks

Connect to the Global Distribution System to significantly increase your B2B sales channels.

Global

Metasearch Engines

Boost your visibility on Google Hotel Ads, TripAdvisor, Trivago and other platforms.

Visibility

CRM & Leads

Centralize and manage your customer data, sales leads, and marketing campaigns efficiently.

Smart

Tours & Activities

Increase ancillary revenue by upselling local tours and activities directly via our API.

Upsell

Wholesalers

Establish direct connections with leading global wholesalers and B2B travel partners.

B2B

Wellness & Spa

Manage complex spa treatments and wellness service bookings comprehensively.

Premium

MyBooking Site

Integrate directly with your own direct booking website to bypass OTA commissions.

Direct

Onsello Connectivity

Onsello

MyBooking
Site

OTAs
Site

Wholesalers

GDS

Tours &
Activities

CRM &
Leads

PMSconnected with Onsello

Wellness
& Spa

Metasearch
Engines

Token

Payment
Gateways

Channel active

Highlighted

How It Works

Get Started in 3 Steps

A simple process to help you seamlessly connect your system and start receiving data instantly.

Register & Get API Token

Connect Channels

Select your desired channels and configure the connection via the designated API Endpoints.

Real-time Data Sync

The system will automatically sync Rates, Availability, and Bookings instantly.

Real-time Synchronization

Rates, Availability, and Restrictions are synced across all channels in real-time with no delays.

Token-based Authentication

Authentication system using Bearer Tokens and OAuth 2.0 for maximum security standards.

Comprehensive Dashboard

Monitor your API Usage, Logs, and Performance through an intuitive Dashboard.

Webhook Support

Receive automated notifications for new bookings or data updates via Webhooks.

onsello-api.js

Availability

Booking

Webhook

// Check Room Availability const response = await fetch( 'https://api.onsello.com/v1/availability', { method: 'GET', headers: { 'Authorization': `Bearer ${token}`, 'Content-Type': 'application/json' }, params: { checkIn: '2025-06-01', checkOut: '2025-06-03', rooms: 1 } }); const data = await response.json(); // Returns: { available: true, rates: [...] }

// Create Booking const booking = await fetch( 'https://api.onsello.com/v1/bookings', { method: 'POST', headers: { 'Authorization': `Bearer ${token}` }, body: JSON.stringify({ roomId: 'ROOM_001', guest: { name: 'John Doe', email: 'guest@email.com' }, checkIn: '2025-06-01', nights: 2 }) });

// Register Webhook const webhook = await fetch( 'https://api.onsello.com/v1/webhooks', { method: 'POST', headers: { 'Authorization': `Bearer ${token}` }, body: JSON.stringify({ url: 'https://your-site.com/webhook', events: [ 'booking.created', 'booking.cancelled', 'rate.updated' ] }) }); // Will receive POST when events fire

Capabilities

Capabilities of Onsello Open API

An API designed specifically for the hotel industry, featuring comprehensive and highly flexible functionalities.

Channel Manager API

Manage Rates, Availability, and Restrictions across all channels simultaneously with a powerful and lightning-fast API.

Bulk Rate Update across all channels
Real-time Availability Sync
Restriction & Stop-sell Management
Multi-currency Support

Booking Engine API

Centralize bookings from every channel in one place, complete with automated notifications and booking management to reduce overbooking.

Rate Management

Define dynamic pricing strategies to adjust rates based on season, events, and demand.

Analytics & Reports

Extract Revenue, Occupancy, and Channel Performance data via API for BI Tools.

Two-way Sync

Bi-directional data flow (Push and Pull) equipped with automatic conflict resolution.

Guest Profile API

Manage Guest data, history, and preferences for seamless personalization.

PMS Integration

Manage Folio, Check-in/out, and Room Assignment via HTNG standard API.

Sandbox Environment

Test the API in a Sandbox environment for free before going live on Production.

Onsello Developers

Ready to Integrate Seamlessly?

Empower your platform with Onsello's Open API. Build custom solutions, automate workflows, and connect our scalable infrastructure directly to your application with developer-friendly endpoints.