Every property insight, none of the data drain.
Listing feeds, valuation models and property-data APIs bill every month. APIPay covers those recurring costs, helps you sell your market data as a product and gives agents and managers one AI key.
Estimates and recommendations, never guarantees · You stay in control
Built for Real Estate teams
What's holding Real Estate back.
The problems we hear most — and exactly what APIPay is built to fix.
Property data on a meter
Comps, ownership records and valuation APIs charge per lookup, so every deal you underwrite adds cost.
Tenant and lead volume
Inquiries, maintenance requests and follow-ups arrive at all hours and pile up across inboxes.
Disconnected systems
CRM, property management and listing tools rarely share data without fragile custom integrations.
The APIPay stack, tuned for Real Estate.
Three products for the APIs you pay for, the APIs you need and the APIs you sell — plus AI that works across all of them.
iAPI
$5,000 one-time per API
Connect the property-data or valuation API your team uses on every deal and have its recurring cost covered after a one-time setup.
Explore iAPIInfinite API
$2,000 one-time
Get a custom, unlimited lifetime API for comps, zoning lookups or portfolio data you query constantly, as plug-in code for your stack.
Explore Infinite APIAPI-Pay
Gateway + monetization
Sell your local market data, rent indices or analytics to investors and partners with keys, plans and invoices.
Explore API-PayWhere Real Estate teams start.
Four high-impact places to put APIPay to work first.
Faster underwriting
Pull comps and property data through covered APIs as often as each deal needs.
Tenant and lead replies
Draft timely, accurate responses with AI Studio and keep your team in control.
Market data products
Package rent indices or neighborhood analytics as an API investors subscribe to.
Market expansion
Use swarms to compare markets and asset types before committing capital or headcount.
From sign-in to covered costs in four moves.
No migrations and no rebuilds — APIPay works alongside the systems you already run.
- 01
Sign in
Create your account and open your command center. Everything starts from the Overview.
- 02
Pick your path
Start iAPI onboarding for an API you pay for, scope an Infinite API, or connect your own endpoint to API-Pay.
- 03
Issue keys
Generate keys for your team, customers or partners, with plans and rate limits that fit your business.
- 04
Build and grow
Call every AI model from one endpoint, switch on Agent Swarms and watch usage in real time.
Made for every seat in Real Estate.
Brokers & agents
Spend time with clients instead of writing and researching.
- Listing copy in minutes
- Fast market summaries
- Covered data lookups
Property managers
Respond faster to tenants without adding staff.
- Drafted replies
- Unified systems
- One AI key
Investors
Underwrite more deals without multiplying data costs.
- Covered valuation APIs
- Swarm market research
- Estimates, clearly labeled
Real Estate, answered.
Still curious? Our team answers every message personally.
Can AI Studio write listing descriptions?
Yes. Send property details to the single chat completions endpoint and get polished drafts back. Always review for accuracy before publishing.
Are swarm valuations reliable enough to buy on?
Swarm outputs are research and estimates, not appraisals or guarantees. Use them to prioritize, then do your normal diligence.
Can we sell our proprietary rent data?
Yes. API-Pay lets you put the data behind a gateway endpoint, issue keys to subscribers and bill on metered usage.
Ready to put APIPay to work in Real Estate?
Sign in, open your Overview and start with the API that costs you the most. We'll take it from there.