# io.github.LofiFren/picocalc-mcp (pypi · picocalc-mcp)

AI assistant access to PicoCalc MicroPython hardware over USB.

- Trust score: 67/100 (medium)
- Change this week: −11
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- pypi · `picocalc-mcp`: 67/100 (this document), [markdown](https://verifymcp.io/servers/lofifren-picocalc-mcp/picocalc-mcp.md), [page](https://verifymcp.io/servers/lofifren-picocalc-mcp/picocalc-mcp)

## Channel facts

- Registry: `pypi`
- Package: `picocalc-mcp`
- Version: `0.1.1`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Supply Chain Security**: 99/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - Runs setuptools.build_meta at install time, a recognised native-build step with no shell scripting around it.
  - 1 of 5 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 32/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - License check failed: no license is declared.
  - Actively maintained (last published 127 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 77/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 302 tokens (~50/item across 6 items; 6 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 20/100
  - Spec-recency check failed: implements MCP spec 2024-11-05; the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add lofifren-picocalc-mcp -- uvx picocalc-mcp
```

### Codex

```bash
codex mcp add lofifren-picocalc-mcp -- uvx picocalc-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "lofifren-picocalc-mcp": {
      "type": "local",
      "command": [
        "uvx",
        "picocalc-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add lofifren-picocalc-mcp --command uvx --arg picocalc-mcp
```

### Hermes

```yaml
mcp_servers:
  lofifren-picocalc-mcp:
    command: "uvx"
    args: ["picocalc-mcp"]
```

### Other

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

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-03 (score 67, +19)

- [security improvement] Malware scan: unverified → pass
- [functional improvement] Stability: unverified → 0.27

### 2026-08-02 (score 48, 0)

- [security improvement] Malware scan: unverified → pass

### 2026-07-31 (score 48, −12)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 60, −18)

- [security regression] Malware scan: pass → unverified

### 2026-07-27 (score 78, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 78)

First indexed and scored.

## MCP tools (6)

### `picocalc_status` (~26 tokens)

Check PicoCalc device connection status, RAM, SD card, and firmware version.

### `picocalc_exec` (~69 tokens)

Execute MicroPython code on the PicoCalc device. Returns stdout and stderr. Use for testing, debugging, reading sensors, or running one-off commands. 30 second timeout -- do not use for launching apps with main loops.

Input parameters:

- `code` (string, required): Python code to execute on the device

### `picocalc_push` (~85 tokens)

Push a local file to the PicoCalc device. The local_path is relative to the MicroPython/ directory in the project.

Input parameters:

- `local_path` (string, required): Local file path relative to MicroPython/ dir (e.g. sd/py_scripts/my_app.py)
- `remote_path` (string, required): Device path (e.g. /sd/py_scripts/my_app.py)

### `picocalc_list_files` (~50 tokens)

List files on the PicoCalc device at a given path. Returns file names, types, and sizes.

Input parameters:

- `path` (string): Device directory path (default: /sd/py_scripts)

### `picocalc_read_file` (~46 tokens)

Read a file from the PicoCalc device and return its contents.

Input parameters:

- `path` (string, required): Device file path (e.g. /sd/py_scripts/synth.py)

### `picocalc_reset` (~26 tokens)

Soft reset the PicoCalc device. Re-runs boot.py and main.py.

## Diagnostics

Captured diagnostic sections: Provenance, Install scripts, Dependencies. The full working is on the page: https://verifymcp.io/servers/lofifren-picocalc-mcp/picocalc-mcp#diagnostics

## Score history

- 2026-08-03: 67
- 2026-08-02: 48
- 2026-08-01: 48
- 2026-07-31: 48
- 2026-07-30: 60
- 2026-07-28: 78
- 2026-07-27: 78
- 2026-07-26: 78

## Links

- PyPI project: https://pypi.org/project/picocalc-mcp/
- Socket report: https://socket.dev/pypi/package/picocalc-mcp
- Repository: https://github.com/LofiFren/PicoCalc
- Changelog RSS feed: https://verifymcp.io/servers/lofifren-picocalc-mcp/picocalc-mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/lofifren-picocalc-mcp/picocalc-mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/lofifren-picocalc-mcp/picocalc-mcp