Endra is a software platform for Mechanical, Electrical, and Plumbing (MEP) engineering that automates the design, modeling, and documentation of building systems. The platform generates 2D and 3D models, calculations, schedules, diagrams, and other engineering documentation from architectural and building design inputs. It supports disciplines such as electrical, fire alarm, HVAC, plumbing, and sprinkler system design, and integrates with Autodesk Revit and common CAD and BIM file formats. Endra uses artificial intelligence, simulation, and computational methods to assist with tasks such as system layout, cable routing, device placement, and documentation generation while helping engineers comply with applicable design standards and regulations. The platform is designed for MEP engineers and engineering firms seeking to reduce manual design and documentation work across construction projects.