Welcome to Freesi Developer Portal
This page hosts a documentation for Freesi API's and is meant for developers looking to integrate with Freesi platform.
Contact Freesi to receive account with access to the documentation.
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About us
Freesi indoor climate management is the market-leading solution for optimizing indoor air quality and improving tenant satisfaction in large real estate portfolios. It makes your portfolio healthy, sustainable, and desired by tenants.
Freesi is proven to work at scale in global real estate portfolios. We provide you real-time data and actionable insights that you can use to optimize your portfolio’s performance. Now you can become a true sustainability leader – leading the way in indoor air quality, reporting and maintaining the health of your tenants, with Freesi.
Our APIs
External API allows you to integrate data from the Freesi platform to your own system.
The API provides endpoints for information about available Points as well as reading measurement data from the Points.
In addition to the raw measured values also Location and Premise specific calculated KPI values are available.
GET /measurements?locationId=601b32df8092b043fc218ba0&measurementTypes=TEMPERATURE&fromMillis=1761202281000&toMillis=1761203339000
{
"locationId": "601b32df8092b043fc218ba0",
"measurePoints": [{
"pointId": "bD58AB3",
"premiseId": "602d6317c8d99a03124f6cd2",
"pointType": "TEMPERATURE",
"points": [{
"timestamp": "2025-10-23T06:56:23Z",
"value": 20.5}]
}],
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