Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Mcp Bun

A comprehensive Model Context Protocol (MCP) server implementation optimized for the Bun JavaScript runtime.

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.

PERMISSION_DELETE_FILES INSTALL_UNPINNED NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV

Why this grade

  • PERMISSION_DELETE_FILES Low

    Contains a call that can delete files.

    src/tools/run-scripts.ts, line 489 await fs.unlink(tempFilePath);

  • INSTALL_UNPINNED Low

    Dependencies use a range or git URL with no lockfile.

    package.json, line 58 @modelcontextprotocol/sdk

  • NETWORK_NO_FIXED_HOST Low

    Makes a network call whose host is not written as a fixed address.

    examples/bun-optimized-server.ts, line 6 async fetch(request) {

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    .gitignore, line 75 # dotenv environment variable files

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

    Concern

    can delete files.

    PERMISSION_DELETE_FILES

    src/tools/run-scripts.ts, line 489

    await fs.unlink(tempFilePath);

  • Install and update

    Concern

    dependencies are not pinned.

    INSTALL_UNPINNED

    package.json, line 58

    @modelcontextprotocol/sdk

  • Network

    Concern

    can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST

    examples/bun-optimized-server.ts, line 6

    async fetch(request) {

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_DOTENV

    .gitignore, line 75

    # dotenv environment variable files

    .gitignore, line 76

    .env

    .gitignore, line 77

    .env.development.local

    Show more

    .gitignore, line 78

    .env.test.local

    .gitignore, line 79

    .env.production.local

  • Agent instructions

    Pass

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

  • Obfuscation

    Pass

    No encoded or minified payload found.

  • 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.

    2025-07-08T22:04:49-03:00

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Note

Hygiene check of commit 3ba74ad99be5. can delete files. dependencies are not pinned. can reach a host that is not written as a fixed address. reads a credential or environment file. the latest commit is more than 365 days old.

Date and source

Date checked:

View source

github.com

Commit graded: 3ba74ad99be54087cb7b7c6b5dcc31bdd11f6f56

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