Revit MCP: What It Is & How to Get Write Access
"Revit MCP" is the ability to connect an AI assistant to Revit through the Model Context Protocol, so the AI can operate on a real model rather than just talk about it. In 2026 there are two paths worth knowing: Autodesk's own official MCP Server for Revit 2027, and third-party connectors. This guide explains both, honestly — including the one difference that matters most for real work: read-only versus read-and-write.
What MCP is, in one paragraph
The Model Context Protocol (MCP) is an open standard for exposing an application's capabilities to an AI assistant as callable "tools". A Revit MCP server wraps Revit's functionality — reading elements, parameters and geometry, and in some cases creating or editing them — behind tool definitions the AI can invoke. You describe what you want in plain language; the assistant decides which tools to call and runs them against your model. No Dynamo graph, no C# add-in, no macro.
Autodesk's official Revit MCP Server
Autodesk ships its own Revit Public MCP Server as an official Tech Preview. It connects an AI assistant to a live Revit model and is the first-party foundation for AI-in-Revit — announced on the Autodesk AEC blog and documented in Autodesk's help. That makes it a natural, trustworthy starting point if you are on Revit 2027.
Two facts matter when you weigh it up, and both come straight from Autodesk's own documentation:
- It is read-only. In Autodesk's words, "no Revit modifications are possible at the moment." The server lets an AI query and reason over your model, but it cannot create or change elements yet.
- It targets Revit 2027 only. The Tech Preview is scoped to the latest release; earlier Revit versions are not covered by the official server.
None of that is a criticism — a Tech Preview is exactly where a careful, official rollout should start, and reading the model safely is the right first step. It simply defines what the official server does and does not do today.
Getting write access: a connector that reads and writes
To actually edit the model through MCP today, or to use MCP on Revit 2024, 2025 or 2026, you need a connector that implements write operations. HuskyBIM for Revit is one: a free, native Revit add-in plus an MCP connector that exposes 488 tools which read and write. It works with Claude Desktop, Cursor, VS Code and Windsurf, on Windows.
Here are prompts that require writing — the ones a read-only server cannot do:
Find every door without a fire rating and set its Fire Rating parameter to 60 minutes.Create levels at 0, 3.5, 7.0 and 10.5 metres named Ground, Level 1, Level 2 and Level 3.Renumber the rooms on Level 2 sequentially, following the corridor from east to west.Place a grid of columns 6 m on centre inside the building footprint on Level 1.Set the Comments parameter to "Reviewed 2026-07" on every element I currently have selected.Create a section through grid line C and place it on a new sheet, then export the model to IFC 2x3.Each of these creates or changes model data through the Revit API on your open document — the category of work that is out of scope for a read-only server.
Honest comparison
The two are complementary, not rivals. A quick, fair summary:
- Access: Autodesk's server is read-only (Tech Preview); HuskyBIM reads and writes.
- Versions: Autodesk's server is Revit 2027 only; HuskyBIM covers Revit 2024, 2025, 2026 and 2027.
- Source: Autodesk's is official first-party; HuskyBIM is third-party and free.
- Best for: use the official server for trustworthy read-only reasoning on 2027; use a write-capable connector when you need to change the model or support an older Revit.
If Autodesk's server later adds write support, that will be great for everyone building AI workflows on Revit. Until then, and for versions before 2027, a connector like HuskyBIM fills the gap. For a broader tour of what AI can do inside Revit, see AI for Revit.
Get write access to Revit — free
Create a free HuskyBIM account, install the connector for your Revit version (2024–2027), and start reading and editing your model in plain language.
Frequently asked questions
Does Autodesk's official Revit MCP Server let AI change the model?
Not yet. Autodesk's Revit Public MCP Server is an official Tech Preview for Revit 2027 that connects an AI assistant to a live Revit model, but it is read-only — Autodesk's own documentation states that no Revit modifications are possible at the moment. It is an excellent, official foundation for reading model data. If you need to create or edit elements today, you need a connector that supports write operations.
How do I get write access to Revit through MCP?
Use a connector that implements write tools on top of the Revit API. HuskyBIM for Revit exposes 488 tools that both read and write — creating and editing walls, doors, rooms, grids, levels, views, sheets and schedules, and setting parameters in bulk — on your open document. It works with Claude Desktop, Cursor, VS Code and Windsurf.
Which Revit versions support MCP?
Autodesk's official MCP Server targets Revit 2027 only. A third-party connector can cover a wider range: HuskyBIM ships separate builds for Revit 2024, 2025, 2026 and 2027, so you can use MCP with an older Revit version too. All builds are free.
Is Autodesk's MCP Server better than a third-party one?
They are different tools. Autodesk's is the official, first-party foundation and a strong choice for read-only reasoning over a Revit 2027 model. A third-party connector like HuskyBIM adds write access and support for Revit 2024–2026. Many users will use the official server for reads and a write-capable connector for edits, or simply pick the one that matches their version and needs.