An open API is a documented, publicly available programming interface that lets third-party software read data from and send commands to a building system without bespoke point-to-point connections. Openness must be verified at the application and licensing layer, where lock-in often migrates.
The application-layer lock-in test is the page's teeth: 'open API' marketing never equals verified openness. Require documented interfaces and data-export terms in procurement.
The checklist format gives IT stakeholders a reason to involve a navigator in procurement reviews even after the lighting decision.
We advise before we quote. Tell us what you are working on and we will tell you whether this applies to your project.
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