Claude Desktop fails when running local MCP tools
is being connected to local AI tools through a server. The setup uses the app, local nodes, and Kokoro TTS.
The system s have been edited so these tools can be reached through the MCP server, with traffic handled on ports 8188 and 8189. MCP inspector shows that the tools are visible.
The failure happens later, when tries to contact the server or run a tool, and returns error -32603. The likely problem area is the JSON config, the port routing, or the way is being routed through the MCP server.
Key points
- is being connected to and Kokoro TTS through MCP.
- MCP inspector can see the tools successfully.
- fails during actual with error -32603.
- The setup uses ports 8188 and 8189.
- The likely checks are the JSON config, port routing, and MCP server setup.