Highlights

BIMO for Revit 0.43.0 beta expands AI Agent Access and improves the everyday Revit UI and custom-command workflow.

AI Agent Access

• Added a Codex-compatible local MCP connector, so Codex can connect to BIMO without placing a bearer credential in its configuration.

• Added explicit Configure Codex and Remove Codex integration actions.

• Improved upgrade and uninstall behavior so BIMO manages only its own Codex configuration and preserves unrelated or user-edited entries.

Revit UI and Settings

• Completed the English/Russian localization pass for BIMO-owned settings, prompts, progress, notifications, validation and error dialogs. Command names remain stable English in this release.

• Added file-picker support for custom C# DLL command sources in General Settings.

• Fixed enum settings so the selected value keeps showing its readable localized label after the dropdown is closed, while preserving existing preset values.

Reliability

• Expanded automated validation for the core Revit add-in, localization and custom-command generation.

Highlights

BIMO for Revit 0.42.0 beta introduces Insolation Hill, a new BIMO Library command that creates a visual 3D design envelope from the site boundary and surrounding BIMO_InsolationTarget points. The resulting volume can be used as a reference while shaping a new building, helping the designer understand where new massing can be placed without blocking the required solar access to the surrounding context.

Insolation Hill

• Available for Revit 2023+ as a paid BIMO Library command.

• Builds a visual limiting volume that can be kept in the model as a design reference while developing the massing of a new building.

• The fastest workflow is to preselect the complete closed site boundary and then run the command; if no compatible lines are preselected, BIMO switches to manual boundary selection.

• Uses all BIMO_InsolationTarget instances in the active project and respects the Daylight Measurement solar profile, project True North, and optional per-target solar time overrides.

• Uses fixed 60-minute sampling for the hill calculation.

• New settings include Hill Height, Hill Material Name, and Output Geometry. Geometry generation can fall back from BRep to tessellated solid and then mesh when required.

• Every successful run creates a new Mass DirectShape, so previous hills remain available for comparison.

• See the Insolation Hill user documentation for setup and usage details. The BIMO_InsolationTarget.rfa component can be downloaded from the BIMO Downloads page.

Updates

• The in-product updater now opens the downloaded MSI in the normal interactive Windows Installer UI after all Revit processes are closed, instead of installing silently.

• The updater waits for the installer to finish or be cancelled before cleaning up the downloaded MSI.

Preview Rays

• Preview geometry now uses the dedicated Lines > BIMO Insolation Rays subcategory, so its visibility, color, line weight, and line pattern can be controlled independently in Revit.

• Fixed multi-selection processing: when several panels or family instances are selected, Preview Rays are created and remain visible for every selected instance instead of only the last processed one.

• Preview Rays created by earlier BIMO versions are not restyled automatically; regenerate them to use BIMO Insolation Rays.

Solar Exposure and Preview Rays

• Added a shared Calculation profile selector with 55° N - Moscow and Custom.

• The built-in Moscow profile fixes latitude 55 and day 112 (April 22) based on GOST R 57795-2017, uses the end-exclusive BIMO interval 06:00-18:00 and a 5-minute BIMO sampling step, and sets the minimum continuous period to 60 minutes under clause 166 of SanPiN 1.2.3685-21.

• Manual latitude, day, hours, sampling step, and minimum-period fields are shown only for Custom. Their values are preserved when hidden.

• Solar Exposure and Preview Rays now resolve the same effective profile, including the same hours and sampling step.

• Existing presets keep their calculation inputs: an exact match selects the built-in profile; other combinations remain Custom.

Settings experience

• Daylight Measurement settings are organized into Insolation calculation, Calculation point and opening, Result, and Ray visualization sections.

• Empty or inapplicable fields and groups are hidden, and inactive hidden values no longer block validation.

• Added clearer English and Russian descriptions for Solar Exposure settings.

Security and maintenance

• Updated log4net from 3.0.3 to 3.3.2.

Known limitation

• Calculation profile option labels remain in English in this beta.

AI Agent Access (Preview)

BIMO can now connect compatible local AI agents to Revit 2024-2027 through an authenticated local MCP runtime. Agents can discover or start Revit, receive structured session and document context, and submit Python jobs. AI Agent Access and Host startup are disabled by default. Running arbitrary Python additionally requires local opt-in, an active paid license, and confirmation inside BIMO.

Russian interface

Added Russian localization for General settings, About BIMO, update and license activation screens, common dialog actions, and Select by Rule, including filters, operators, and element counts.

Fixes

• Invalid command variant settings now prevent execution until corrected.

• AI Agent Access no longer blocks later Revit launch requests while another instance waits for a document or user input.

• About BIMO now opens documentation in the current interface language.

Solar Exposure: safe linked-model optimization

Restored the temporary view optimization without hiding visible loaded Revit links. Solar Exposure and Preview Rays now use the same visibility preparation and ray-calculation path, so the preview represents the unobstructed rays counted by the calculation. Hidden or unloaded links remain excluded by the active 3D view.

Solar Exposure: linked models support

Fixed an issue where Solar Exposure could ignore shading geometry from linked Revit models. Visible walls, masses and other supported elements inside loaded links are now included in the calculation, consistently with Preview Rays.

Highlights

BIMO for Revit 0.39.5 beta includes the most important changes delivered since 0.39.3 beta: updated access rules for Solar Exposure and Preview Rays, along with substantially expanded user documentation.

Solar Exposure and Preview Rays

• Solar Exposure and Preview Rays now require an active paid BIMO license.

• The outdated preview-period date restriction has been removed. Access is now determined by the current license status.

• Preset-based command variants follow the same license rules as the main commands.

• Restart Revit after activating or changing a license to apply the current access settings.

User Documentation

• Added and expanded guides for installation, first run, updates, settings, presets, and command variants.

• Published detailed guides for Dynamo, Python, and BIMO Library workflows.

• Added practical troubleshooting sections, command limitations, and guidance for common issues.

• The main user workflows are available in English, Russian, and French.

Highlights

BIMO for Revit 0.39.3 beta completes the move to the new universal installer flow. The add-in is now distributed as a single Autodesk Application Bundle installer for supported Revit versions, while keeping version-specific binaries isolated inside the bundle.

Compatibility

• Added support for Autodesk Revit 2027.

• Autodesk Revit 2020 is no longer supported and is not included in the universal installer.

Installer and Updates

• Universal MSI: one installer now installs BIMO.bundle for Revit 2021-2027.

• Per-version isolation: Revit-specific binaries and dependencies stay in separate bundle folders.

• Shared command generator: common command-generation tooling is stored once in the shared bundle area.

• Legacy cleanup: the installer removes old per-version add-in manifests and legacy BIMO add-in folders without deleting user settings, license, branding, or logs.

• Per-user installation: the installer is designed for installation without administrator elevation.

Stability

• Fixed a startup crash that could appear after removing local license or branding files.

• Improved ribbon/settings registration resilience when fallback/default ribbon layouts are used.

• Made JSON config tests isolated and CI-safe.

Highlights

BIMO for Revit 0.38.0 introduces a major productivity workflow: you can now turn Dynamo .dyn files into easy-to-run toolbar commands. This makes everyday BIM automation faster, more consistent, and easier to share across teams.

New Features

Dynamo scripts as toolbar commands

• Add your Dynamo files in General Settings → Dynamo command sources.

• Each selected .dyn file can be exposed as a command on the BIMO ribbon.

• Script paths are selected with a file picker and Dynamo filter (*.dyn), reducing setup mistakes.

• Teams can standardize frequently used Dynamo automations and launch them from a familiar toolbar flow.

• Dynamo-based .dyn commands are fully integrated into the Presets and Variants system for reusable one-click workflows.

Improvements

• General Settings in sidebar: command source management is easier to find and maintain.

• Color Tabs stability: more predictable tab grouping behavior in multi-document Revit sessions.

• Runtime reliability: stronger ribbon resiliency and UTF-8-safe JSON config handling for more stable day-to-day usage.

Why it matters

• Faster access to automation for architects, BIM coordinators, and model managers.

• Lower friction when rolling out repeatable Dynamo-based workflows.

• Better visibility and navigation in large projects with many open views and documents.

Highlights

This release adds Color Tab Grouping — a practical way to visually group Revit document tabs by file. Each document gets its own deterministic color, so working with many open files becomes easier at a glance.

New Features

Color Tab Grouping

• Automatic colors (zero setup): Tabs are colored automatically, no configuration required.

• Per-document grouping: All tabs belonging to the same document share the same color.

• Non-intrusive styling: Uses a small colored stripe on the tab (no full background fill).

• Project vs Family distinction: Family documents are visually distinguished (thicker stripe / different placement).

• Ribbon toggle: Can be turned on/off from the toolbar.

Improvements

• Improved ribbon construction resilience: if a ribbon element is missing or fails to create, it is logged and the rest of the ribbon is still built.

Bug Fixes

• Minor stability improvements.

Highlights

This release adds Command Variants — a fast way to run the same tool in multiple “modes” right from the toolbar. You can assign a different preset to each variant, so your most common workflows are always one click (or one hotkey) away. We also improved the update experience with clearer guidance, reliable cancellation, and a more robust silent installer.

New Features

Command Variants (Preset-based)

• Split-button variants: Selected commands now appear as split buttons with additional variants in the dropdown.

• One preset per variant: Each variant can be linked to a specific settings preset, letting you run the same command with different configurations.

• How to assign a preset:

  1. Open Settings

  2. Select a command in the left navigation

  3. Select or create a preset (top dropdown)

  4. Assign a Variant to that preset (dropdown next to presets)

• Execution behavior:

  • Running the main command always opens the settings form first.

  • Running a variant uses its assigned preset and opens the settings form only if one or more inputs are invalid.

• Example (Run Dynamo): Create presets for different .dyn files (or the same file with different input values), assign them to variants, and launch them instantly from the toolbar — including via hotkeys.

Run Dynamo

• FROM SCRIPT: Added a FROM SCRIPT button that reads the list of input values from the selected .dyn file and automatically fills/updates the inputs in settings.

Improvements

Updates

• Clearer post-download instructions: The update window now explains what happens after the installer is downloaded.

• Cancel on close: Closing the update window cancels the download and cleans up temporary files.

• Download progress: The update window shows progress during download.

Updater

• Wait for all Revit instances: Installation starts only after all running Revit instances are closed.

• Silent installation: Installation runs automatically in silent mode via msiexec.

Bug Fixes

• Minor stability improvements.

New Features

Run Dynamo Command

• Execute Dynamo Scripts: Run .dyn files directly in Revit.

• Browse for Script Files: New file picker for Dynamo and Python scripts.

Parameter Manager

• Multi-Category Support: Manage parameters across multiple categories in one operation.

• Improved Validation: Invalid values are now blocked.

Core Improvements

• Revit Version Check: Commands verify the required Revit version.

Bug Fixes

• Stability and performance improvements.

New Features and Improvements

Run Python Command

• Engine Selection Support: Users can now choose between IronPython and Dynamo_CPython3 as the script execution engine. This opens up full compatibility with Python scripts originally written for Dynamo.

• Cross-Compatible Python Scripts: The Run Python command now supports running scripts created for Dynamo directly inside Revit, and vice versa.

• Script File Input: Users can now specify a path to a Python file on disk, allowing them to write and maintain scripts in their favorite external editor.

• Unified IN/OUT Support: Both engines now consistently use IN for input values and OUT for output, ensuring a uniform scripting experience.

• New Default Template: The built-in script template has been updated to reflect current best practices — clean IN/OUT usage and no print statements.

• Updated Documentation: The command’s documentation now clarifies engine-specific behaviors and includes multilingual support.

For details, visit the Run Python documentation.

New Features and Improvements

General Improvements

• BIMO Update Window: The version check window has been updated with a clearer layout and includes quick access links to the official website and release notes.

• New Preset Option: Added a "New" option in the settings dropdown menu, allowing users to quickly create a new settings preset with default values.

Solar Exposure

• SelectPanels Method: Introduced a new strategy for selecting panels via a specified curtain wall system.

• Preview Rays Geometry Fix: Fixed a bug where preview ray geometry was incorrect when ray altitude values were negative.

Select by Rule

• Element Count Display: The command now displays the number of elements that match the selected rule.

• The Option "Only Visible on View": Added a new option to limit selection only to visible elements in the active view.

Open Settings

• Property Input Bug Fix: Resolved an issue related to incorrect handling of property inputs in the settings UI.

Select by Group

• Support for Empty Categories: When the category list is empty, the command now applies to all categories — useful for broad group-based selections.

Run Python

• Default Script Setting: Updated the default value for the Script setting in Run Python to streamline initial scripting workflows.

Open in Batch

• "From Dialog" Option: Added a new "From Dialog" setting, enabling users to select files for batch opening using a dialog interface.

For detailed usage instructions, please visit our user guide.

New Features and Improvements

Select by Mass Command

• New Command Introduction: Introducing the Select by Mass command, which allows users to select elements located within chosen Masses based on specified categories. This command is particularly useful for managing large models and assigning parameters to elements in bulk.

• Key Use Case: The command is especially valuable for assigning section numbers to multiple elements (e.g., Rooms). Users can select a Mass corresponding to a building section, and the command highlights all elements within the Mass. Then, users can assign the section number parameter to the selected elements.

• Settings Integration: Command settings can be configured via the Settings button on the BIMO toolbar. If settings are invalid or incomplete, the configuration dialog will appear when the command is run, ensuring accurate and effective operation.

Performance and Workflow Benefits

• Enhanced Efficiency: Save time by automating element selection within volumetric regions, eliminating the need for manual selection.

• Improved Accuracy: Ensure precise parameter assignments by using Masses as spatial filters for element selection.

For detailed usage instructions, please visit the user guide.

New Features and Improvements

Solar Exposure Enhancements

• Significant Speed Improvements: We've drastically increased the calculation speed of the Solar Exposure command, enabling faster and more efficient analyses.

• Progress Bar with Cancellation: A new progress bar with a cancellation option has been introduced, giving users greater control over the calculation process.

• Extended Element Categories: The list of categories influencing sunlight calculations has been expanded for more comprehensive analysis results.

• Optimized Panel Behavior: Curtain wall panels no longer contribute to shading but are used solely for displaying calculation results, enhancing performance and clarity.

• Discontinued Option: The "Use Curtain Wall to Select Panels" option has been removed to simplify workflows.

• Intermittent Sunlight Display: Added support for visualizing intermittent sunlight exposure in analysis results.

• Virtual Window Parameters: Users can now define the width and depth of a "virtual" window opening, which will be factored into sunlight duration calculations for more precise analyses.

User Experience (UX) Enhancements

• Category State Retention: The selected category state in the settings window is now saved for a more consistent user experience.

• Filter Retention: The last-used filter based on rules is now remembered, saving time during repeated workflows.

• Helpful Comments: Tooltips with explanatory comments have been added to options in the settings, providing clarity and guidance.

• Slider Input for Integer Values: Integer values can now be entered using a visually updated slider, improving ease of use and precision.

Bug Fixes and Minor Enhancements

• Improved Stability: Various minor bugs have been resolved, and optimizations have been implemented for better overall performance.

For detailed usage instructions, please visit our user guide.

New Features and Improvements

Revit 2025 Support

• Extended Compatibility: BIMO Add-in now fully supports Autodesk Revit 2025, ensuring seamless integration and functionality with the latest version of Revit. Users can continue to utilize BIMO's features and tools without compatibility issues, staying up-to-date with Revit's latest offerings.

Stability Improvements

• Enhanced Reliability: We've made several improvements to enhance the stability and reliability of the BIMO Add-in, addressing potential issues to ensure smoother performance. These enhancements provide a more robust experience, especially for users working on complex projects and large datasets.

For detailed usage instructions, please visit our user guide.

New Features and Improvements

Sunlight Exposure Analysis Command

• New Command Introduction: The new Sunlight Exposure Analysis command enables users to calculate sunlight exposure duration for curtain wall panels or curtain walls in Autodesk Revit. This feature provides valuable insights for daylight analysis by calculating exposure times based on geographic location, sun angles, and specified time parameters.

• Configurable Parameters: Users can configure sunlight settings such as Latitude, Sunrise and Sunset Hours, Day of the Year, and Minute Step in @ProductName settings to tailor exposure calculations to project-specific conditions.

• Results Storage: The calculated exposure time for each element is stored in a specified parameter (default: "Comments"). Users can apply view filters to display exposure times visually, making it easy to interpret and review the results within the model.

Preview Rays Command

• New Command Introduction: The new Preview Rays command allows users to visualize sunlight rays impacting selected family instances in Autodesk Revit. This tool helps users understand sunlight penetration and shading patterns for elements such as curtain panels, windows, and other facade components.

• Element Selection Process: Users can either pre-select elements before running the command or select them during execution. If elements are pre-selected, the command automatically generates the ray preview. If no elements are pre-selected, the command prompts the user to select family instances and confirm with the "Finish" button to begin visualization.

• Adjustable Sunlight Parameters: Sunlight parameters such as latitude, sun hours, and date can be configured in @ProductName settings to ensure the previewed rays accurately reflect project-specific sunlight conditions.

For detailed usage instructions, please visit the Sunlight Exposure Analysis guide and Preview Rays guide.

New Features and Improvements

Run Python Command

• New Command Introduction: The new Run Python command allows users to run Python scripts directly within Autodesk Revit. This feature enables automation and customization by giving users access to Revit API through Python code, providing a flexible way to interact with the model, perform calculations, and modify elements.

• Predefined Variables: Users can access predefined Revit API objects in their Python scripts, such as:

  • __revit__: Accesses the UIApplication object representing the Revit application.

  • __uiapp__: Another reference to UIApplication for interacting with the current Revit session.

  • __doc__: The active Document object, allowing access to the current Revit project or family.

  • __uidoc__: The UIDocument object for UI interactions within Revit.

• Script Output: Users can print the result of their scripts using the print() function. For example:

This will display the document title in a task dialog within Revit.

For detailed usage instructions, please visit the user guide.

New Features and Improvements

Preset Management

• Save, Copy, and Manage Presets: Added the ability to save the current settings for any command as a preset. Users can create custom presets, copy existing ones, rename, reset to defaults, or delete unused presets. This allows for quicker reconfiguration across multiple projects.

UI Improvements

• General UI Enhancements: Various interface improvements have been made to ensure smoother navigation and clearer display of options, particularly in the Settings panel.

New Features and Improvements

Select by Scope Box Command

• New Command Introduction: Introducing the Select by Scope Box command, allowing users to select elements within a defined Scope Box based on specified categories. This feature is particularly useful for tasks like assigning section numbers to elements within residential buildings.

For detailed usage instructions, please visit the user guide.

Dark Theme Support

• Enhanced User Interface: The BIMO Add-in now fully supports Revit's dark theme, providing a consistent and visually comfortable experience. This is especially beneficial for users of Revit 2024 and later versions.

New Features and Improvements

Open in Batch Tool

• Batch Document Management: Introducing the Open in Batch tool, allowing users to open multiple Revit documents simultaneously. This feature streamlines workflows by enabling batch processing for tasks such as file updates, audits, and reviews.

• Workset Control with Patterns: Use wildcard patterns to specify which worksets to open or close automatically, optimizing visibility and resource management for large projects.

• Detachment Options: Easily choose to open files in a detached state for safe testing and editing, while managing local copies through specified directories.

• Inverse Workset Pattern Option: Introduce the ability to invert workset patterns, allowing users to close worksets matching the pattern by default, enhancing control over project visibility.

Improvements and Fixes

• Performance Enhancements: Various optimizations have been implemented to improve overall plugin speed and reliability.

• Bug Fixes: Resolved minor bugs related to document management and UI interactions to enhance user experience.

For detailed usage instructions, please visit the user guide.

New Features and Improvements

Calculate Height Command Enhancements

• Improved Performance by Hiding Elements: The Calculate Height command now significantly improves performance by temporarily hiding unnecessary elements in the active 3D view during calculations if the user has not done so manually. These changes are rolled back after the calculations are completed, ensuring no permanent alterations to the view.

• Updated Accuracy Option: Replaced the Use Midpoint for Accuracy option with Use Extra Point for Accuracy, which allows users to include an additional point in the calculation for improved accuracy.

New Features

Calculate Height Command Enhancements

• From Phase Option: Added a new setting to specify the phase from which rooms should be considered for height calculation. This allows users to filter and process rooms based on the selected phase.

• Use Midpoint for Accuracy: Introduced an option to toggle the inclusion of the midpoint of boundary segments (the edges of room boundaries) in the height calculation. Enabling this option increases calculation accuracy but may impact performance.

Performance Improvements

• Segment Length Filtering: Implemented a threshold to only consider boundary segments (the edges of room boundaries) longer than 300 mm, reducing unnecessary calculations and focusing on significant room geometry.

• Conditional Midpoint Calculation: Midpoints of boundary segments are now only included in calculations if the Use Midpoint for Accuracy option is enabled, allowing users to balance between accuracy and performance.

For detailed usage instructions, please visit the user guide.