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Aps Sample MCP Server Revit Automation

Sample MCP server to automate Revit via Automation API using SSA

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Sample MCP Server for Revit Automation

A sample Model Context Protocol (MCP) remote server (HTTP) that enables AI assistants like Claude to automate Autodesk Revit operations via Automation API using Service-to-Service Authentication (SSA).

https://github.com/user-attachments/assets/43a5aabc-d2a3-47ff-a9e1-8bd61d24a81e

⚠️ Disclaimer
This is a vibe-coded sample solution - an exploratory proof-of-concept developed iteratively. It demonstrates patterns and possibilities but may not follow all production-grade practices. This README was generated by GitHub Copilot based on analyzing the actual codebase, ensuring documentation matches implementation.

🔗 Companion Repository
This MCP server works with the APS Automation API Revit MCP Tools Sample - the Revit AppBundle that executes the actual tools in Automation API. Deploy that AppBundle to use this MCP server.

🎯 Overview

MCP Revit Automation bridges AI assistants with Autodesk Revit through the Model Context Protocol. It enables headless, scalable automation of Revit operations on cloud-hosted models (ACC/BIM360) without manual interaction.

Target Audience: AEC Firms, BIM Managers, BIM Coordinators, Developers building AI-powered BIM workflows

Key Features

🔐 SSA Authentication - JWT bearer tokens with RSA signing for service-to-service auth
🏗️ Fluent API - Type-safe model configuration with compile-time validation
📦 Dual JSON Architecture - Separates model context from tool inputs
🤖 MCP Integration - Exposes tools to AI assistants naturally
☁️ Cloud-Native - Works with Autodesk Cloud Models

🔧 Extensible Tool System

Easy to add new Revit automation tools
Consistent pattern for all operations
No core service changes required

🤖 MCP Protocol Support

Exposes tools to AI assistants like Claude or VS Code Copilot
Natural language to Revit automation
HTTP transport for broad compatibility

☁️ Cloud-Native

Works with Autodesk Cloud Models (ACC/BIM360) - Workshared and Non-Workshared
Scalable workitem submission
Automation API for Revit integration

🏛️ Architecture

MCP Client (Claude/VS Code) 
    ↓ MCP Protocol
MCP Server (This Project)
    ├─ RevitAutomationTools (MCP tool definitions)
    ├─ RevitAutomationService (Workitem submission)
    └─ SsaTokenService
    ↓ HTTPS + Bearer Token
Autodesk Automation API for Revit (Cloud execution)

Dual JSON Pattern:

revitmodel.json - Model context (region, project, model GUIDs, tool name)
toolinputs.json - Tool-specific parameters

📦 Prerequisites

.NET 10 SDK (Download)
An Autodesk Platform Services Sever-to-Server App with Automation API enabled
Service Account configured (SSA Management Tool)
Automation Activity deployed for APS Automation API Revit MCP Tools Sample

🚀 Installation

git clone https://github.com/autodesk-platform-services/aps-sample-mcp-server-revit-automation.git
cd mcp-revit-automation
dotnet restore
dotnet build --configuration Release

Create appsettings.json:

{
  "Forge": {
    "ClientId": "your-client-id",
    "ClientSecret": "your-client-secret",
    "ServiceAccountId": "your-service-account-id",
    "KeyId": "your-key-id",
    "PrivateKeyPath": "path/to/private-key.pem"
  }
}

Run (http): dotnet run

⚙️ Configuration

Obtain credentials from APS Developer Portal:

Create APS application with Automation API enabled → Get ClientId & ClientSecret
Create Service Account → Generate RSA key pair → Get ServiceAccountId & KeyId
Download private key as .pem file → Set path in PrivateKeyPath

📘 Usage

MCP Client Configuration

Visual Studio Code: See how to configure an MCP Server here

{
 "inputs": [],
  "servers": {
    "revit-automation-mcp": {
      "url": "http://localhost:6223",
      "type": "http"
    }
  }
}

Fluent API Example

// Model configuration (type-safe, compile-time validated)
var modelConfig = ModelConfiguration.Create()
    .WithRegion("US")
    .WithProject("project-guid")
    .WithModelGuid("model-guid")
    .WithToolName("link_models")
    .Save(true)
    .Configure();

// Tool-specific inputs (flexible dictionary)
var toolInputs = new Dictionary<string, object>
{
    { "modelName", "My Model" },
    { "linksToAdd", new[] { new { modelName = "Link1", modelGuid = "guid1" } } },
    { "linksToRemove", Array.Empty<object>() }
};

var result = await service.SubmitWorkItemAsync(modelConfig, toolInputs);

🛠️ Available Tools

Tool	Description
`create_model`	Creates a new Revit model from template
`link_models`	Adds/removes Revit model links

Creating a Revit Model

revitmodel.json

{
  "region": "US",
  "projectGuid": "00000000-0000-0000-0000-000000000000",
  "modelGuid": "11111111-1111-1111-1111-111111111111",
  "toolName": "create_model",
  "save": false
}

toolinputs.json

{
  "enableWorksharing": true,
  "accountId": "00000000-0000-0000-0000-000000000000",
  "projectId": "00000000-0000-0000-0000-000000000000",
  "folderId": "urn:adsk.wipprod:fs.folder:co.example",
  "modelName": "NewModel.rvt"
}

Managing Model Links