Fusion Electronics

Fusion Electronics is a Codex plugin for Autodesk Fusion Electronics. It adds Codex tools for inspecting the active Electronics document, running Electronics commands, exporting EAGLE files, and making controlled changes through Fusion's local MCP server.

The plugin forwards Autodesk's standard Fusion MCP tools and adds Electronics-specific tools for schematic, board, and library workflows.

Requirements

• Autodesk Fusion installed and running locally.
• Fusion MCP Server enabled in Fusion preferences.
• Codex with plugin support.
• Node.js 20 or newer.

Fusion's local MCP endpoint must be available at:

http://127.0.0.1:27182/mcp

Install

Register this repository as a Codex marketplace:

codex plugin marketplace add mdlockyer/fusion-electronics

Install the plugin:

codex plugin add fusion-electronics@fusion-electronics

For a specific branch or tag:

codex plugin marketplace add mdlockyer/fusion-electronics --ref main

Tools

Fusion Electronics adds these tools:

• fusion_mcp_electronics_list_commands
• fusion_mcp_electronics_start_command
• fusion_mcp_electronics_text_command
• fusion_mcp_electronics_export_eagle
• fusion_mcp_electronics_run_python

Autodesk's existing Fusion MCP tools are forwarded through the same plugin server.

Safety

The plugin operates on the active Fusion document. Some tools can modify unsaved schematic, board, or library content. Check the active document before running write tools, start with command discovery or readback, and save only when you intend to keep the changes.

Troubleshooting

If the plugin does not appear after installation, confirm that Codex can read the marketplace:

codex plugin list --marketplace fusion-electronics

If the MCP namespace is missing after installation, reload Codex and check the MCP registry:

codex mcp list

The expected MCP server key is fusion_el.

Development

For local development, register the checkout path instead of the GitHub repo:

codex plugin marketplace add /path/to/fusion-electronics

Run the syntax check:

npm run check

The plugin server is dependency-free Node ESM, so validation does not require an install step.

Repository layout:

.agents/plugins/marketplace.json            # Codex marketplace manifest
plugins/fusion-electronics/.codex-plugin/   # Plugin manifest
plugins/fusion-electronics/.mcp.json         # MCP server registration
plugins/fusion-electronics/mcp/              # Node stdio MCP server
plugins/fusion-electronics/skills/           # Codex skill and references

License

MIT