Grades are a hygiene check, not a security guarantee.

MCP, MCP server

ggsrun

Antigravity CLI plugin for safe Google Apps Script development via ggsrun MCP and sandbox guardrails.

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 63db6b51a8dd, unchanged since the check below.

SECRETS_PATH_CREDENTIAL

Why this grade

  • SECRETS_PATH_CREDENTIAL Medium

    Mentions a credential store path (~/.ssh, id_rsa, .npmrc, .aws/credentials, credentials.json, .netrc).

    internal/app/ggsrun.go, line 275 Usage: "Path to a service account credentials.json file.",

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

    etc/release_helper.go, line 40

    cmd := exec.Command("gh", "auth", "token")

    internal/app/cli_test.go, line 240

    buildCmd := exec.Command("go", "build", "-o", tempBinary, "../..")

    internal/app/cli_test.go, line 247

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

    Show more

    internal/app/handler_mcp.go, line 420

    cmd := exec.Command(exePath, cmdArgs...)

    internal/app/mcp_test.go, line 109

    buildCmd := exec.Command("go", "build", "-o", tempBinary, "../..")

    internal/app/oauth.go, line 373

    cmd := exec.Command("gcloud", "auth", "print-access-token")

    internal/app/oauth.go, line 521

    cmd = exec.Command("xdg-open", codeurl)

    internal/app/oauth.go, line 530

    cmd = exec.Command("open", codeurl)

  • Install and update

    Pass

    No install-time script found, and dependencies are pinned or absent.

  • Network

    Concern

    can reach a host that is not written as a fixed address. can reach api.example.com. The description does not name that host. can reach google.com. The description does not name that host. can reach api.github.com. The description does not name that host. can reach api.example. The description does not name that host.

    NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST

    manual-tests/test_sandbox.js, line 7

    const res = UrlFetchApp.fetch(url);

    docs/exe1_lifecycle.md, line 22

    var response = UrlFetchApp.fetch('https://api.example.com/v1/health');

    docs/exe1_lifecycle.md, line 86

    var response = _wrappedUrlFetchApp.fetch('https://api.example.com/v1/health');

    Show more

    docs/sandbox_guide.md, line 61

    GAS->>GAS: Call checked method (e.g., UrlFetchApp.fetch() redirected to _wrappedUrlFetchApp)

    docs/sandbox_guide.md, line 109

    * **`allowedUrls`**: Target external URLs whitelisted for `UrlFetchApp.fetch()`. Supports wildcards (`*`).

    docs/sandbox_guide.md, line 130

    var response = UrlFetchApp.fetch('https://google.com');

    docs/sandbox_guide.md, line 160

    * **Prompt**: "Create a script `test_fetch.gs` that fetches data from `https://api.github.com/users/octocat` using `UrlFetchApp.fetch()`. Execute it using the `exe1` command of `gg

    docs/sandbox_guide.md, line 180

    * **Prompt**: "Write a script `notify_user.gs` that sends a notification email to `[email protected]` using `MailApp.sendEmail()` and posts a status payload to `https://api.example

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_CREDENTIAL SECRETS_PATH_DOTENV

    etc/release_helper.go, line 32

    if token := os.Getenv("GITHUB_TOKEN"); token != "" {

    etc/release_helper.go, line 35

    if token := os.Getenv("GH_TOKEN"); token != "" {

    internal/app/ggsrun.go, line 275

    Usage: "Path to a service account credentials.json file.",

    Show more

    internal/app/cli_test.go, line 22

    content, err := os.ReadFile("../../.env")

    internal/app/cli_test.go, line 24

    content, err = os.ReadFile(".env")

    internal/app/cli_test.go, line 26

    content, err = os.ReadFile("../.env")

    internal/app/cli_test.go, line 248

    // Set working directory to the project root so relative paths from .env resolve correctly

    internal/app/ggsrun.go, line 343

    Usage: "Path to a service account credentials.json file.",

    internal/app/ggsrun.go, line 429

    Usage: "Path to a service account credentials.json file.",

    internal/app/ggsrun.go, line 462

    Usage: "Path to a service account credentials.json file.",

  • 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 (LICENCE).

  • 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 63db6b51a8dd. requests shell access. The manifest names this permission. can reach a host that is not written as a fixed address. can reach api.example.com. The description does not name that host. can reach google.com. The description does not name that host. can reach api.github.com. The description does not name that host. can reach api.example. The description does not name that host. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: 63db6b51a8dd00130a2cff483b833d21f2637fbe

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