A side-by-side look at the Embedcalc MCP and Serial MCP Server MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Embedcalc MCP for embedded system work over a hosted endpoint; choose Serial MCP Server for embedded system. You can also run both side by side in one mcpServers block.
list_ports, open, write.Rows where the two servers differ are marked.
| Spec | E Embedcalc MCP | |
|---|---|---|
| Category | Embedded System | Embedded System |
| Quality signal | 42/100 · Fair | 49/100 · Fair |
| Install command | Confirmed | Not confirmed yet |
| Transport | Remote HTTP/SSE | — |
| Auth | No auth required | No auth required |
| Pricing | Free | Free |
| Required env vars | None listed | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | — | 94 |
| Directory activity | 0 views 0 installs 0 upvotes | 4 views 0 installs 0 upvotes |
| Tools | Not listed | 12 |
| Full listing | View Embedcalc MCP | View Serial MCP Server |
No tool names declared yet. Check the project README from the listing page.
list_portsDiscover available serial ports.openOpen a serial connection.writeWrite UTF-8, hex, or base64 data to an open connection.readRead data from an open connection with timeout handling or a bounded capture window.closeClose an open connection.set_control_linesSet RTS and/or DTR on an open connection.macro_loadValidate and load an inline macro pack or pack file path into the server's in-memory registry.macro_listList loaded macro packs, macros, and assemblies.macro_unloadRemove a loaded macro pack from the in-memory registry.macro_planExpand a loaded, inline, or file-backed macro or assembly without opening hardware.macro_runRun a loaded macro or assembly against an existing connection or explicit simulation input.macro_run_inlineValidate, plan, and run an inline macro pack without storing it in the registry.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": {
"embedcalc-mcp-2": {
"url": "https://www.embedcalc.com/mcp/"
}
}
}
No confirmed install command for Serial MCP Server yet — follow the setup steps linked from its listing page rather than a guessed package name.