Model MCP for Autodesk® Revit® connects Claude Desktop, Claude Code or any MCP client that starts a stdio server to a live Revit project. Ask questions about the model, check it, and change it in plain language. Every change is one named undo entry in Revit, and read-only mode is one switch away.

Quick start

You need two parts: the add-in inside Revit on Windows, and the server next to your MCP client. Details and requirements are in requirements and installation. Tested with Claude Desktop over SSH; other clients are listed on the tested clients page.

1. Install the add-in. On the Windows machine with Revit, download RevitModelMcp-<version>-SingleUser.msi (current user) or RevitModelMcp-<version>-MultiUser.msi (all users) from the latest release. Install only one of them. Alternatively, install with WinGet:

winget install Sharafutdinov.RevitModelMcp

Keep Revit closed during installation, then start Revit and open a model. Revit asks whether to load the add-in, because release builds are not code-signed yet.

2. Add the server to your MCP client. In Revit, Model MCP > Model MCP > Connect AI app registers the bundled server in Claude Desktop, Cursor, VS Code or Codex; Claude Code gets a copy-paste command. The MSI includes the server executable, so this path needs no separate Python or uv installation.

If you prefer the PyPI server: Install uv, then register the server. For Claude Code on the same Windows machine:

claude mcp add revit-model-mcp -e REVIT_MCP_HOST=local -e REVIT_MCP_REDACT_PATHS=1 -- uvx revit-model-mcp

For Claude Desktop, open the revit-model-mcp-<version>.mcpb bundle from the latest release, or add this to its MCP configuration:

{
  "mcpServers": {
    "revit-model-mcp": {
      "command": "uvx",
      "args": ["revit-model-mcp"],
      "env": {
        "REVIT_MCP_HOST": "local",
        "REVIT_MCP_REDACT_PATHS": "1"
      }
    }
  }
}

On macOS or Linux, use a remote workstation instead of REVIT_MCP_HOST=local. The Claude Desktop bundle page explains its settings form.

3. Ask a first question. Restart the client, keep a model open in Revit and ask: "Call revit_ping, then tell me which model is open." success: true means both parts are connected. From a clone, uv run --directory server revit-model-mcp runs the same server without installing the package.

For updates, the release add-in checks GitHub daily and notifies by default; the PyPI server checks PyPI, or install the newer MSI (updates). Report bugs in Issues, ask questions in Discussions, and report vulnerabilities through SECURITY.md.

Why Model MCP

• Safe by design. Each change is one named undo entry in Revit, and one setting makes the whole server read-only.
• Confirmation first. Saving, syncing and other irreversible steps wait for your explicit approval.
• Installs like normal software. MSI installers, with deployment guides for SCCM, Intune and Group Policy.
• Works from a Mac. MCP stdio runs through SSH to the Windows workstation, so no port opens.

Features in 2.0

• Model MCP ribbon tab. The product menu contains About, Check for updates, and Settings. The panel provides Connect AI app, Activity, Read-only, Help, Report issue, and Support developer. Update checks depend on the release channel. Buttons have contextual help and themed tooltips. See the ribbon guide.
• Workstation read-only lock. The ribbon and revit_set_read_only control one lock across running Revit versions for the Windows user. Chat unlock requires explicit confirmation. Machine policy remains enforced.
• Model audits. revit_model_audit checks one model against YAML, JSON, inline rules, or a builtin pack. Saved results support history comparisons. revit_audit_report produces XLSX and HTML reports. See model audit.
• Sheet inspection. revit_list_sheets reads sheets, title blocks, revisions, placed views, and unplaced views.
• Revit API lookup. revit_api_lookup reads public types and members from the running Revit API before C# execution.
• Progress notifications. Clients that supply a progress token receive queue state, Revit API availability, and batch step counters during long requests. See progress notifications.
• Document tab highlight. A border marks the document handling MCP work and clears after completion. The ribbon guide covers timing and settings.
• Reusable skills. Coordinator, daily QA, sheet set, and ISO 19650 issue register workflows ship in the repository. See prompts and skills.

Try these prompts

Paste any of these into your MCP client with a model open in Revit. The last column names the tools each prompt uses.

Goal	Prompt	Tools
Review	"Give me an overview of the open model: levels, element counts by category, links and the biggest problems."	revit_document_info, revit_list_catalog, revit_aggregate_elements, revit_list_warnings
Health check	"Run a health check before we issue this model and list what fails."	revit_model_health, revit_parameter_fill_check
Find and show	"Find the doors on this floor and show me where they are in 3D."	revit_query_elements, revit_capture_elements
Highlight	"Colour those doors red on the L2 plan and fade everything else."	revit_activate_view, revit_override_graphics
Change, then undo	"Move the selected elements 500 mm along X. Preview it first, then do it, then undo it."	revit_move with dry_run, revit_undo_last
Batch over a folder	"Collect read-only snapshots of every model in this folder and tell me which ones have parameters left empty."	revit_batch_start, revit_batch_status, revit_build_report
ISO 19650 register	"Check this model against our EIR and write an issue register to Excel with element snapshots."	revit_issue_register, with the ISO 19650 skill
Export	"Export the L2 plan as PDF, and a Navisworks file of the whole model."	revit_export, revit_export_nwc
Run from a Mac	"Call revit_ping and tell me which model is open on the workstation."	revit_ping, over SSH (see remote workstations)

What it can do

The tables list every tool by name; the tool reference has arguments, units and limits.

"Show the building going up in construction order."	"Bring the building together piece by piece."
"Show supply and return air moving through the building."	"Colour the model by warnings."

Review a model

Read the model, find problems and show them in Revit. Reads change nothing in the document.

Tools for reviewing a model

Task	Tools
Check the connection and open documents	revit_ping, revit_ui_state, revit_documents, revit_document_info, revit_list_instances
Find and count elements	revit_list_catalog, revit_aggregate_elements, revit_query_elements, revit_element_details, revit_list_relations
Read views and schedules	revit_list_views, revit_view_info, revit_view_summary, revit_view_elements, revit_schedule_data, revit_list_sheets
Read warnings	revit_list_warnings, revit_view_warnings
Check model quality	revit_model_health, revit_parameter_fill_check, revit_family_audit, revit_model_audit
Get a picture	revit_export_view, revit_capture_elements
Point at things in Revit	revit_activate_view, revit_select, revit_show, revit_isolate, revit_override_graphics

Coordinate links and datums

Compare and align grids and levels with linked models, inspect links and shared coordinates, and prepare CAD and Navisworks hand-overs.

Tools for links and datums

Task	Tools
Inspect links and coordinates	revit_links_status, revit_shared_coordinates
Compare and align datums	revit_compare_link_datums, revit_align_link_datums
Work with CAD links	revit_link_cad, revit_walls_from_cad
Remove links	revit_remove_links
Navisworks export	revit_nwc_settings_check, revit_export_nwc

Change the model safely

Edit elements, families, views and sheets. Each change is one named undo entry, and the riskiest calls use a client token handshake. See safety.

Tools for changing the model

Task	Tools
Edit elements	revit_move, revit_rotate, revit_copy, revit_mirror, revit_change_type, revit_set_parameter, revit_update_parameters, revit_delete
Run many steps as one undo	revit_run_actions
Create elements	revit_create_wall, revit_create_mep_run
Work with families	revit_load_family, revit_place_family, revit_place_families, revit_edit_families
Work with views and sheets	revit_create_view, revit_duplicate_view, revit_apply_view_template, revit_set_view_visibility, revit_create_sheet, revit_place_views_on_sheet
Tag elements and create schedules	revit_tag_elements, revit_create_schedule
Open, save and close documents	revit_open_document, revit_new_document, revit_activate_document, revit_close_views, revit_close_document, revit_save_document, revit_sync_document
Export files	revit_export
Look up the API and run C# in Revit	revit_api_lookup, revit_execute_code
Undo	revit_undo_last

Process many models at once

Run the same checks, edits, exports and saves over a folder of models, or collect read-only snapshots from many models in a persistent run. Long jobs return a jobId that survives client restarts.

Tools for many models

Task	Tools
Open, change, export and save many models	revit_process_models
Collect snapshots without changing models	revit_batch_start, revit_batch_status, revit_batch_cancel, revit_batch_fetch
Follow and cancel long jobs	revit_jobs, revit_cancel_job

Write an issue register with snapshots

Review a model against your requirements and write an Excel register with severity totals, element rows and element snapshots. Snapshots also let you audit models later without Revit running.

Tools for registers and reports

Task	Tools
Take a snapshot of a model	revit_model_snapshot
Write an issue register	revit_issue_register
Build a report from snapshots	revit_build_report
Report saved audit results	revit_audit_report

Prompts and skills

My tools

Successful C# procedures can be saved as named tools with validated parameters after explicit source review and confirmation. The My tools ribbon window lists approved revisions and supports Show code and confirmed deletion. Agents run saved tools through the same execution, read-only lock, and Undo pipeline as revit_execute_code. See My tools for saving, running, reviewing, deleting, and the security model.

The prompts and coordinator guide describe read-only model review workflows. For Claude Code, copy skills/revit-model-coordinator into ~/.claude/skills/. For Claude Desktop, zip that skill folder and upload it as a skill.

The hand-written ISO 19650 issue register skill reviews a model against EIR/BEP requirements and writes an Excel register with element snapshots. Install it the same way: copy skills/iso19650-issue-register into ~/.claude/skills/, or zip the folder and upload it in Claude Desktop.

The daily QA skill checks model health, warnings, links, parameters, and families without changing the model. The family authoring skill creates and checks families against company rules, with Revit flex, hosting, and connector evidence. The sheet set skill resolves a sheet list, confirms the layout, and creates sheets with placed views. Install these folders with the same copy or ZIP procedure.

Safety

• Actions are on by default. One workstation read-only lock refuses every action. Turn it on with the Read-only ribbon button or revit_set_read_only; turning it off with the tool needs your explicit confirmation. The machine policy wins over the lock. Action tools stay listed and return errorCode: "read_only" instead of running. See Actions.
• One undo per change. A committed action is one named Revit undo entry, shown in Revit's Undo list and in the add-in's "MCP activity" pane. revit_undo_last undoes it while it is still Revit's last change.
• Confirmation tokens for irreversible actions. Saving, synchronizing, removing links and running C# always need one. Closing with changes, deleting more than 500 elements, overwriting existing export files and in-place saves in batch runs need one too. The first call changes nothing and returns the text to show you; the retry returns the token through the AI app. A token is single use and expires after five minutes.
• Dry runs. Model-changing tools such as revit_move, revit_delete, revit_run_actions, revit_export and revit_process_models accept dry_run to preview the result without committing it.
• A readable summary. Every action returns verification and a one-sentence summary of what changed.
• Path redaction. REVIT_MCP_REDACT_PATHS=1 hides directories in response path fields. Names, parameter values and errors stay visible.
• Unreachable workstation. errorCode: "transport_unavailable" with retryable: true means Revit or the workstation is unreachable and the call did not run. Retry when the workstation or tunnel is back. See errors and refusals.
• HTTP. Direct HTTP callers need the bearer token and are refused while the workstation read-only file is present.

For unattended runs, switch on read-only mode. confirm_token is a two-step handshake with the AI app. The AI app is expected to show the action to you; Model MCP does not show its own dialog. The token does not prove human approval.

A confirmation token guards against mistakes and injected instructions, but a client that confirms by itself can send it back. See actions for gates, exceptions and verification failures, security details for authentication and privacy boundaries, and SECURITY.md to report a vulnerability.

Remote workstations

Local Windows clients use REVIT_MCP_HOST=local under the Revit user's account. Remote clients run the whole server on the workstation over SSH, as the same Windows user that runs Revit. Install it there once with uv tool install revit-model-mcp, then register ssh as the command:

{
  "mcpServers": {
    "revit-model-mcp": {
      "command": "ssh",
      "args": ["revit-pc", "revit-model-mcp", "--redact-paths"]
    }
  }
}

Replace revit-pc with the workstation's SSH host alias. MCP stdio flows through the SSH session and the remote server uses the named pipe, so no port opens. REVIT_MCP_HOST=ssh:<alias> (file channel over SSH) and HTTP through an SSH tunnel remain available; HTTP requires a bearer token except for /health and binds to loopback by default. See transport setup.

Compatibility

Revit 2022 to 2027 on Windows 10 and 11. The add-in targets .NET Framework 4.8 for Revit 2022-2024, .NET 8 for 2025 and 2026, and .NET 10 for 2027. Every year builds, installs and runs live reads and actions. The MSI bundles a server executable for Windows that needs no separate Python or uv installation. The PyPI server needs Python 3.11 or newer and runs on Windows, macOS or Linux; uv can start it with uvx revit-model-mcp. See validation evidence for dates and limits, and known gaps.

Privacy

Model MCP returns requested model data to the selected MCP client. The bundle enables response path redaction by default. The project has no telemetry. The privacy policy covers collection, update checks, the AI client data flow, storage, retention and contact information. The server checks for a newer stable release once a day; set REVIT_MCP_NO_UPDATE_CHECK=1 to opt out.

For administrators

The deployment guide covers silent MSI installs, SCCM, Intune, Group Policy, offline server installs and proxies. The policy reference lists every setting and its precedence. For security reviews, use the security whitepaper and the questionnaire answers. See also the MCP specifications, the tested clients and what Model MCP deliberately does not do.

Code signing policy

Release builds are not code-signed yet, so Revit asks whether to load the add-in after install and after each update. Verify downloads with SHA256SUMS.txt and the build provenance attestation; see the code signing policy and download verification. See automatic updates for update modes and installation.

Contributing and support

Documentation covers setup, tools and transport. Start with CONTRIBUTING.md, ask questions in Discussions, or report bugs and request features through the issue forms. CI runs the C# and Python test suites and builds the supported Revit configurations. If Model MCP saves you time, a :star: on GitHub helps other Revit users find it.

License

MIT, maintained by Dinar Sharafutdinov. See third-party notices for dependency licenses.

Trademarks

Autodesk and Revit are registered trademarks or trademarks of Autodesk, Inc., and/or its subsidiaries and/or affiliates in the USA and/or other countries. Model MCP is an independent project and is not affiliated with or endorsed by Autodesk.