Picocalc MCP

A MicroPython firmware and script collection for the Clockwork Pi PicoCalc handheld device, powered by the Raspberry Pi Pico 2W. It runs locally over stdio via the published package.

People connecting this server to Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

VERIFIED ACTIVE

LAST COMMIT 2026-07-01 · ★ 77 · #339 OF 848 MAINTAINED OTHER · VERIFIED 2026-08-25

Python servers · how we verify → /methodology

01 · Install Picocalc MCP

Claude Code

claude mcp add lofifren-picocalc -- uvx picocalc-mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "lofifren-picocalc": {
      "command": "uvx",
      "args": [
        "picocalc-mcp"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license no standard license detected - usage rights unclear; check the repo before commercial use

pypi package picocalc-mcp - check the name against the project README before installing (PyPI has no namespace ownership)

registry namespace io.github.LofiFren is GitHub-verified and matches the repo owner

03 · Who maintains Picocalc MCP

picocalc-mcp is maintained by lofifren. It's the only MCP server we track from this author; the repo dates to Apr 2025.

04 · Facts

repository
github.com/lofifren/picocalc
category
other - ranked #339 of 848 actively-maintained other servers as of 2026-08-25.
registry
io.github.LofiFren/picocalc-mcp (active, first published 2026-03-25)
packages
pypi:picocalc-mcp

05 · Picocalc MCP FAQ

What is Picocalc MCP?

A MicroPython firmware and script collection for the Clockwork Pi PicoCalc handheld device, powered by the Raspberry Pi Pico 2W. It runs locally over stdio via the published package.

Is Picocalc MCP still maintained?

Yes - as of 2026-08-25, its last commit was 2026-07-01. We re-verify nightly.

How do I install Picocalc MCP?

Run `uvx picocalc-mcp`. You can also paste the ready-made client config above.

Does Picocalc MCP run locally?

Yes - it's a stdio server: it runs on your machine (via uvx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

06 · Alternatives to Picocalc MCP

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