A side-by-side look at the Matter Controller MCP and Picocalc MCP MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Matter Controller MCP for embedded system work as a local process; choose Picocalc MCP for embedded system as a local process. You can also run both side by side in one mcpServers block.
get_controller_status, commission_device, get_commissioned_devices.Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Embedded System | Embedded System |
| Quality signal | 59/100 · Good | 40/100 · Fair |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | No auth required | Not declared |
| Pricing | Free | Not declared |
| Required env vars | None listed | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | 8 | 80 |
| Directory activity | 5 views 0 installs 0 upvotes | 0 views 0 installs 0 upvotes |
| Tools | 11 | Not listed |
| Full listing | View Matter Controller MCP | View Picocalc MCP |
get_controller_statusGet the current status of the Matter controller (automatically initialized on startup)commission_deviceCommission a new Matter deviceget_commissioned_devicesGet list of commissioned devices (optionally filter by specific nodeId)get_device_infoGet detailed information about the device and its capabilities structurecontrol_onoff_deviceControl on/off state of a devicecontrol_level_deviceControl level (brightness/dimming) of a devicecontrol_color_deviceControl color temperature and color of a devicedecommission_deviceDecommission a commissioned Matter devicewrite_attributesWrite attributes to a device cluster (supports batch writing)read_attributesRead attributes from a device cluster (can read specific attributes or all attributes in a cluster)reset_controllerReset the Matter controller and clear all storage data (requires confirmation)No tool names declared yet. Check the project README from the listing page.
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
{
"mcpServers": {
"0x1abin-matter-controller-mcp": {
"command": "npx",
"args": [
"-y",
"matter-controller-mcp"
]
}
}
}
{
"mcpServers": {
"picocalc-mcp": {
"command": "uvx",
"args": [
"picocalc-mcp"
]
}
}
}
