Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Excel Mcp Server Master

A Model Context Protocol (MCP) server that lets you manipulate Excel files without needing Microsoft Excel installed.

Compatibility: Not stated.

Grade B

Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

Rescanned at commit a85d1b462893, unchanged since the check below.

INSTALL_UNPINNED SECRETS_PATH_UNCONFIRMED PERMISSION_SHELL_DECLARED OBFUSCATION_FILE_OVER_READ_CAP

Why this grade

  • INSTALL_UNPINNED Low

    Dependencies use a range or git URL with no lockfile.

    package.json, line 47 cross-spawn

  • SECRETS_PATH_UNCONFIRMED Low

    The Secrets check reports a credential or environment file, but no quoted line shows a recognisable path.

    .gitignore, line 86 # Environments

  • PERMISSION_SHELL_DECLARED Note

    Runs shell commands, and the manifest or description says so.

    master_excel_mcp.py, line 5284 subprocess.run(cmd, check=True)

  • OBFUSCATION_FILE_OVER_READ_CAP Note

    A file was over the read cap and was not fully read.

    master_excel_mcp.py, line 1 #!/usr/bin/env python

Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.

Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.

What was checked

Plain notes from the hygiene checks.

  • Permissions

    Note

    requests shell access. The manifest names this permission.

    PERMISSION_SHELL_DECLARED

    master_excel_mcp.py, line 5284

    subprocess.run(cmd, check=True)

    master_excel_mcp.py, line 5449

    subprocess.run(cmd, check=True)

    master_excel_mcp.py, line 5475

    subprocess.run(cmd, check=True)

  • Install and update

    Concern

    dependencies are not pinned.

    INSTALL_UNPINNED

    package.json, line 47

    cross-spawn

    requirements.txt, line 1

    fastmcp>=0.1.0

  • Network

    Pass

    No network call found.

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_UNCONFIRMED

    .gitignore, line 86

    # Environments

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Note

    a file was over the read cap and was not fully read.

    OBFUSCATION_FILE_OVER_READ_CAP

    master_excel_mcp.py, line 1

    #!/usr/bin/env python

  • Licence

    Pass

    A licence file is present (LICENSE.md).

  • Maintainer activity

    Note

    the latest commit is more than 365 days old.

    MAINTAINER_STALE

    No file path was stored.

    2025-06-18T16:45:48+02:00

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Note

Hygiene check of commit a85d1b462893. requests shell access. The manifest names this permission. dependencies are not pinned. reads a credential or environment file. a file was over the read cap and was not fully read. the latest commit is more than 365 days old.

Date and source

Date checked:

View source

github.com

Commit graded: a85d1b46289358aa23c788d178917a842ebc148b

This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.

Read how this letter is chosen