Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Opencode Mcp

An MCP (Model Context Protocol) server that lets any MCP host — Claude Code, Codex, Cursor, etc.

Compatibility: Not stated.

Grade C

One Medium finding. Read the report before installing.

Graded by PlugVetRubric v2

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

INSTALL_LIFECYCLE_HOOK

Why this grade

  • INSTALL_LIFECYCLE_HOOK Medium

    A package install hook (preinstall, install, postinstall or prepare) runs a script.

    package.json, line 47 prepare

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

    Pass

    No shell or command execution found, and no extra permission was declared.

  • Install and update

    Concern

    runs a script at install time.

    INSTALL_LIFECYCLE_HOOK

    package.json, line 47

    prepare

  • Network

    Concern

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

    NETWORK_NO_FIXED_HOST

    src/modules/shared/opencode-client.ts, line 23

    return await fetch(new Request(request, { signal: controller.signal }));

    src/modules/shared/usage-limits.ts, line 104

    const response = await fetch(FETCH_URL, {

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_DOTENV

    CHANGELOG.md, line 73

    `read` / `edit` / `bash` deny globs (secrets, keys, `.env`) survive untouched.

  • Agent instructions

    Pass

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

  • Obfuscation

    Pass

    No encoded or minified payload found.

  • Licence

    Note

    no licence file found.

    LICENCE_MISSING

    No file path was stored.

    no licence file found.

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Get the full report on this tool, £49

Note

Hygiene check of commit dde285c94aed. runs a script at install time. can reach a host that is not written as a fixed address. reads a credential or environment file. no licence file found.

Date and source

Date checked:

View source

github.com

Commit graded: dde285c94aed0c81749a07f2fb2e24b116671a6c

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Read how this letter is chosen