Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Mcp Language Server

mcp-language-server gives MCP enabled clients access semantic tools like get definition, references, rename, and diagnostics.

Compatibility: Not stated.

Grade C

One Medium finding. Read the findings 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 e4395849a52e, unchanged since the check below.

INSTALL_REMOTE_SCRIPT

Why this grade

  • INSTALL_REMOTE_SCRIPT Medium

    Fetches a script from the network and runs it (a pipe to a shell, or an install hook with a URL).

    .github/workflows/go.yml, line 28 run: curl --proto '=https' --tlsv1.2 -sSf https://just.systems/install.sh | bash -s -- --to /usr/local/bin

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.

If you think this grade is wrong, email [email protected] with the entry link and your evidence. We aim to acknowledge within two working days and decide within seven. If we confirm an error, we aim to correct it within 24 hours of confirming it. These are aims, not guarantees.

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

    cmd/generate/main.go, line 67

    cmd := exec.Command("git", "clone", "--quiet", "--depth=1", "-c", "advice.detachedHead=false", vscodeRepo, "--branch="+lspGitRef, "--single-branch", tmpdir)

    internal/lsp/client.go, line 50

    cmd := exec.Command(command, args...)

  • Install and update

    Serious

    install fetches a script from the network.

    INSTALL_REMOTE_SCRIPT

    .github/workflows/go.yml, line 28

    run: curl --proto '=https' --tlsv1.2 -sSf https://just.systems/install.sh | bash -s -- --to /usr/local/bin

  • 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

    internal/protocol/tsprotocol.go, line 1

    // Copyright 2023 The Go Authors. All rights reserved.

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Note

    the latest commit is more than 365 days old.

    MAINTAINER_STALE

    No file path was stored.

    2025-06-03T14:29:15-04:00

Get the full report on this tool, £49

Note

Hygiene check of commit e4395849a52e. requests shell access. The manifest names this permission. install fetches a script from the network. 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: e4395849a52e18555361abab60a060802c06bf50

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