Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Outlook Classic Mcp

Use Microsoft Outlook (classic desktop) end-to-end from your agent (Claude Code, Cowork, Copilot, Cursor, and other plugin-compatible agents) — read, search, triage, and send mail; manage calendar events and meeting invites; work with contacts, tasks, color categories, and mail

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 5986a1549861.

INSTALL_UNPINNED PERMISSION_SHELL_DECLARED OBFUSCATION_FILE_OVER_READ_CAP

Why this grade

  • INSTALL_UNPINNED Low

    Dependencies use a range or git URL with no lockfile.

    requirements.txt, line 1 mcp>=1.27

  • PERMISSION_SHELL_DECLARED Note

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

    scripts/install_to_clients.py, line 175 proc = subprocess.run(cmd, capture_output=True, text=True)

  • OBFUSCATION_FILE_OVER_READ_CAP Note

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

    uv.lock, line 1 version = 1

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

    scripts/install_to_clients.py, line 175

    proc = subprocess.run(cmd, capture_output=True, text=True)

    scripts/install_to_clients.py, line 178

    subprocess.run(["claude", "mcp", "remove", SERVER_KEY], capture_output=True)

    scripts/install_to_clients.py, line 179

    proc = subprocess.run(cmd, capture_output=True, text=True)

    Show more

    scripts/live_reconnect_test.py, line 22

    subprocess.run(["taskkill", "/im", "OUTLOOK.EXE"], capture_output=True)

    scripts/live_reconnect_test.py, line 24

    subprocess.run(["taskkill", "/f", "/im", "OUTLOOK.EXE"], capture_output=True)

    src/outlook_mcp/bridge.py, line 68

    subprocess.Popen( # noqa: S603 - path comes from HKLM registry

  • Install and update

    Concern

    dependencies are not pinned.

    INSTALL_UNPINNED

    requirements.txt, line 1

    mcp>=1.27

  • Network

    Pass

    No network call found.

  • Secrets

    Pass

    No read of a credential file or secret environment variable found.

  • 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

    uv.lock, line 1

    version = 1

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

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Note

Hygiene check of commit 5986a1549861. requests shell access. The manifest names this permission. dependencies are not pinned. a file was over the read cap and was not fully read.

Date and source

Date checked:

View source

github.com

Commit graded: 5986a1549861b886a49848eeab35a9e883c71768

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