| Claude cannot connect to the Autodesk Fusion MCP Server |
Fusion is not running, the Autodesk Fusion MCP Server is not enabled, or URL mismatch |
Ensure Fusion is running. Confirm the Autodesk Fusion MCP Server is enabled in Preferences > General > API. Verify your client is configured with http://127.0.0.1:27182/mcp. |
| Other MCP clients cannot connect |
Incorrect URL or blocked port |
Ensure the URL is correctly configured (http://127.0.0.1:27182/mcp). Confirm no firewall is blocking port 27182. |
| Commands do not execute |
No document or workspace is open in Fusion |
Ensure a document or workspace is open in Fusion. Try a simple command to confirm connectivity. |
| Tool permissions list is empty in Claude |
Fusion is not running, the Autodesk Fusion MCP Server is not enabled, or the connection has not yet initialized |
Start Fusion and confirm the Autodesk Fusion MCP Server is enabled in Preferences > General > API. Return to Settings > Connectors in Claude, open the Autodesk Fusion connector, and check the Tool permissions list. If the list remains empty, try quitting and restarting Claude Desktop. |
| The server does not appear in Cursor |
Cursor has not reloaded the configuration, or the JSON is invalid |
Confirm mcp.json contains a valid mcpServers entry pointing to http://127.0.0.1:27182/mcp, then restart Cursor. Check Cursor Settings > Tools & MCP to confirm autodesk-fusion is listed and enabled. |
| The server appears in Cursor but lists no tools |
Fusion is not running or the Autodesk Fusion MCP Server is not enabled |
Start Fusion and confirm the Autodesk Fusion MCP Server is enabled in Preferences > General > API. Toggle the server off and on in Cursor Settings > Tools & MCP to reconnect. |
| Cursor does not call the Fusion tools |
The chat is not in Agent mode |
Tool calls require Agent mode. Switch the chat to Agent mode and try the prompt again. |
| The server does not appear in VS Code, and no error is shown |
The configuration uses the mcpServers key, or the entry is missing type |
VS Code requires servers as the top-level key and a type of http. A block copied from Cursor or Claude Desktop parses as valid JSON but is silently ignored. Correct the keys, then reload the window. |
| The server appears in VS Code but lists no tools |
Fusion is not running or the Autodesk Fusion MCP Server is not enabled |
Start Fusion and confirm the Autodesk Fusion MCP Server is enabled in Preferences > General > API. Restart the server from the MCP server list to reconnect. |
| VS Code does not call the Fusion tools |
Copilot Chat is not in Agent mode |
Tool calls require Agent mode. Switch Copilot Chat to Agent mode and try the prompt again. |
| Connection was working but stopped |
Fusion was closed or restarted |
Reopen Fusion and ensure the Autodesk Fusion MCP Server is still enabled. Claude may need a moment to reconnect. |
| Port was changed but client cannot connect |
Client configuration still references the old port |
If you changed the port in Fusion preferences, update the URL in your client configuration to match the new port. |
| MCP checkbox and port not visible in API settings |
Fusion version does not include MCP support |
Update Fusion to the latest version. The Autodesk Fusion MCP Server option is only available in recent releases. |