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class="md-sidebar md-sidebar--secondary" data-md-component="sidebar" data-md-type="toc"> <div class="md-sidebar__scrollwrap"> <div class="md-sidebar__inner"> <nav class="md-nav md-nav--secondary" aria-label="Table of contents"> <label class="md-nav__title" for="__toc"> <span class="md-nav__icon md-icon"></span> Table of contents </label> <ul class="md-nav__list" data-md-component="toc" data-md-scrollfix> <li class="md-nav__item"> <a href="#features" class="md-nav__link"> <span class="md-ellipsis"> Features </span> </a> </li> <li class="md-nav__item"> <a href="#quick-start" class="md-nav__link"> <span class="md-ellipsis"> Quick Start </span> </a> </li> <li class="md-nav__item"> <a href="#connection-modes" class="md-nav__link"> <span class="md-ellipsis"> Connection Modes </span> </a> </li> <li class="md-nav__item"> <a href="#gui-vs-headless-mode" class="md-nav__link"> <span class="md-ellipsis"> GUI vs Headless Mode </span> </a> </li> <li class="md-nav__item"> <a href="#freecad-macros" class="md-nav__link"> <span class="md-ellipsis"> FreeCAD Macros </span> </a> </li> <li class="md-nav__item"> <a href="#documentation" class="md-nav__link"> <span class="md-ellipsis"> Documentation </span> </a> </li> <li class="md-nav__item"> <a href="#links" class="md-nav__link"> <span class="md-ellipsis"> Links </span> </a> </li> </ul> </nav> </div> </div> </div> <div class="md-content" data-md-component="content"> <article class="md-content__inner md-typeset"> <h1 id="freecad-robust-mcp-suite">FreeCAD Robust MCP Suite<a class="headerlink" href="#freecad-robust-mcp-suite" title="Permanent link"></a></h1> <p>Welcome to the FreeCAD Robust MCP Suite documentation.</p> <p>This project provides an <a href="https://modelcontextprotocol.io/">MCP (Model Context Protocol)</a> server and FreeCAD workbench that enable integration between AI assistants (Claude, GPT, and other MCP-compatible tools) and <a href="https://www.freecadweb.org/">FreeCAD</a>, allowing AI-assisted development and debugging of 3D models, macros, and workbenches.</p> <hr> <h2 id="features">Features<a class="headerlink" href="#features" title="Permanent link"></a></h2> <ul> <li><strong>82+ MCP Tools</strong> - Comprehensive CAD operations including primitives, PartDesign, booleans, export</li> <li><strong>Multiple Connection Modes</strong> - XML-RPC (recommended), JSON-RPC socket, or embedded (Linux only)</li> <li><strong>GUI &amp; Headless Support</strong> - Full modeling in headless mode, plus screenshots/colors in GUI mode</li> <li><strong>Macro Development</strong> - Create, edit, run, and template FreeCAD macros via MCP</li> </ul> <hr> <h2 id="quick-start">Quick Start<a class="headerlink" href="#quick-start" title="Permanent link"></a></h2> <div class="language-bash highlight"><pre><span></span><code><span id="__span-0-1"><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a><span class="c1"># Install the Robust MCP Server</span>
</span><span id="__span-0-2"><a id="__codelineno-0-2" name="__codelineno-0-2" href="#__codelineno-0-2"></a>pip<span class="w"> </span>install<span class="w"> </span>freecad-robust-mcp
</span><span id="__span-0-3"><a id="__codelineno-0-3" name="__codelineno-0-3" href="#__codelineno-0-3"></a>
</span><span id="__span-0-4"><a id="__codelineno-0-4" name="__codelineno-0-4" href="#__codelineno-0-4"></a><span class="c1"># Install the workbench via FreeCAD Addon Manager</span>
</span><span id="__span-0-5"><a id="__codelineno-0-5" name="__codelineno-0-5" href="#__codelineno-0-5"></a><span class="c1"># (search for "Robust MCP" - the package is "FreeCAD Robust MCP Suite")</span>
</span><span id="__span-0-6"><a id="__codelineno-0-6" name="__codelineno-0-6" href="#__codelineno-0-6"></a>
</span><span id="__span-0-7"><a id="__codelineno-0-7" name="__codelineno-0-7" href="#__codelineno-0-7"></a><span class="c1"># Start FreeCAD and switch to the "Robust MCP Bridge" workbench</span>
</span><span id="__span-0-8"><a id="__codelineno-0-8" name="__codelineno-0-8" href="#__codelineno-0-8"></a><span class="c1"># Click "Start Bridge" in the toolbar</span>
</span><span id="__span-0-9"><a id="__codelineno-0-9" name="__codelineno-0-9" href="#__codelineno-0-9"></a>
</span><span id="__span-0-10"><a id="__codelineno-0-10" name="__codelineno-0-10" href="#__codelineno-0-10"></a><span class="c1"># Configure your MCP client and start building!</span>
</span></code></pre></div> <p>See <a href="getting-started/installation/">Installation</a> for detailed setup instructions.</p> <hr> <h2 id="connection-modes">Connection Modes<a class="headerlink" href="#connection-modes" title="Permanent link"></a></h2> <table> <thead> <tr> <th>Mode</th> <th>Description</th> <th>Platform</th> </tr> </thead> <tbody> <tr> <td><code>xmlrpc</code></td> <td>XML-RPC protocol (port 9875)</td> <td>All platforms (recommended)</td> </tr> <tr> <td><code>socket</code></td> <td>JSON-RPC socket (port 9876)</td> <td>All platforms</td> </tr> <tr> <td><code>embedded</code></td> <td>In-process FreeCAD</td> <td>Linux only</td> </tr> </tbody> </table> <p>See <a href="guide/connection-modes/">Connection Modes</a> for details on choosing the right mode.</p> <hr> <h2 id="gui-vs-headless-mode">GUI vs Headless Mode<a class="headerlink" href="#gui-vs-headless-mode" title="Permanent link"></a></h2> <p>The Robust MCP Server works with FreeCAD in both GUI and headless mode:</p> <table> <thead> <tr> <th>Feature</th> <th>Headless</th> <th>GUI</th> </tr> </thead> <tbody> <tr> <td>Object creation</td> <td>Yes</td> <td>Yes</td> </tr> <tr> <td>Boolean operations</td> <td>Yes</td> <td>Yes</td> </tr> <tr> <td>Export (STEP, STL, etc.)</td> <td>Yes</td> <td>Yes</td> </tr> <tr> <td>Screenshots</td> <td>No</td> <td>Yes</td> </tr> <tr> <td>Object colors/visibility</td> <td>No</td> <td>Yes</td> </tr> <tr> <td>Camera control</td> <td>No</td> <td>Yes</td> </tr> </tbody> </table> <hr> <h2 id="freecad-macros">FreeCAD Macros<a class="headerlink" href="#freecad-macros" title="Permanent link"></a></h2> <p>The MCP server provides tools for working with FreeCAD macros:</p> <ul> <li><strong>List macros</strong> - Discover available macros in your FreeCAD installation</li> <li><strong>Run macros</strong> - Execute macros with parameter passing</li> <li><strong>Create macros</strong> - Generate new macros from templates or custom code</li> </ul> <p>See <a href="guide/macros/">Macros Guide</a> for details on using macros with the MCP server.</p> <hr> <h2 id="documentation">Documentation<a class="headerlink" href="#documentation" title="Permanent link"></a></h2> <table> <thead> <tr> <th>Section</th> <th>Description</th> </tr> </thead> <tbody> <tr> <td><a href="getting-started/installation/">Getting Started</a></td> <td>Installation, configuration, and quick start</td> </tr> <tr> <td><a href="guide/connection-modes/">User Guide</a></td> <td>Connection modes, workbench, macros, and tools</td> </tr> <tr> <td><a href="MCP_TOOLS_REFERENCE/">Tools Reference</a></td> <td>Complete API reference for all 82+ MCP tools</td> </tr> <tr> <td><a href="api/server/">API Reference</a></td> <td>Python API documentation</td> </tr> <tr> <td><a href="development/contributing/">Development</a></td> <td>Contributing, architecture, and development setup</td> </tr> <tr> <td><a href="COMPARISON/">Comparison</a></td> <td>Compare with other FreeCAD MCP implementations</td> </tr> </tbody> </table> <hr> <h2 id="links">Links<a class="headerlink" href="#links" title="Permanent link"></a></h2> <ul> <li><a href="https://github.com/spkane/freecad-robust-mcp-and-more">GitHub Repository</a> - 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