Supply API & MCP - for distribution partners
Bookable Vacation Rentals for Apps and AI Agents
Plug 75,000+ professionally managed vacation rentals into your product. Live rates, live availability, and confirmed bookings through one API and one MCP server.
For consumer apps, AI agents, and travel suppliers. Property managers: see the AI Channel Manager.
75,000+
properties bookable
100+
destinations
40+
PMS systems synced
WHAT YOU GET
The supply side of the connectivity layer
Property managers connect their PMS to OnSeason once. The Supply API and MCP server hand that inventory to the products travellers actually use, with bookings flowing back into the PMS.
Verified supply
Every property comes from a professional manager connected through their PMS, with descriptions, photos, amenities, and house rules.
Live rates and availability
Rates and calendars sync from the PMS in real time, so what your users see is what they can book. No stale caches, no double bookings.
Confirmed bookings
A booking made in your product lands in the property manager's PMS as a confirmed reservation. No manual handoff, no request-to-book limbo.
MCP server for AI agents
Expose search, property details, availability, and booking as tools your agent can call. Built on the Model Context Protocol.
Commercial terms
Commission for supply partners is agreed per integration. Property managers pay nothing to be listed.
One integration, one contract
Integrate once with OnSeason instead of negotiating with hundreds of property managers or juggling dozens of PMS APIs.
WHO IT'S FOR
Built for products that put travellers in front of stays
Consumer apps
Add vacation rentals next to hotels, flights, or experiences. A plug-and-play accommodation catalogue for travel, fintech, loyalty, and lifestyle apps.
AI agents and assistants
Let trip planners, personal assistants, and agentic commerce products search, compare, and book stays inside the conversation.
GDS and travel suppliers
Slot professionally managed rentals into existing travel supply APIs and distribution platforms alongside your current content.
// Search live inventory
GET
/v1/search?destination=lisbon&checkIn=2026-10-03&guests=4
// Quote a stay with live rates
GET
/v1/properties/:id/quote
// Confirm the booking in the PMS
POST
/v1/bookings
Same capabilities exposed as MCP tools: search_stays, get_quote, create_booking
HOW IT WORKS
Three steps from first call to first booking
Request access
Tell us what you're building and pick a time. We walk through inventory coverage, the data model, and commercial terms.
Integrate the API or MCP
Pull search results, property details, live rates, and availability over REST, or mount the MCP server so your agent calls them as tools.
Send bookings
Create a reservation and it is written straight into the property manager's PMS, with guest details and payment confirmation.
FAQ
Frequently Asked Questions
Ready to add vacation rentals to your product?
Tell us what you're building and book a call. We'll cover inventory, integration, and terms in one conversation.