Grades are a hygiene check, not a security guarantee.

MCP, MCP server

io.github.bierlingm/spikes

io.github.bierlingm/spikes, an MCP server listed in the PlugVet directory.

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.

NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST SECRETS_PATH_DOTENV PERMISSION_SHELL_DECLARED INSTALL_DOCUMENTED_INSTALLER

Why this grade

  • NETWORK_NO_FIXED_HOST Low

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

    install.sh, line 29 LATEST=$(curl -fsSL "https://api.github.com/repos/${REPO}/releases/latest" | grep '"tag_name"' | cut -d'"' -f4)

  • NETWORK_UNNAMED_HOST Low

    Calls a fixed host that the description does not name.

    install.sh, line 29 LATEST=$(curl -fsSL "https://api.github.com/repos/${REPO}/releases/latest" | grep '"tag_name"' | cut -d'"' -f4)

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    cli/src/commands/deploy.rs, line 99 /// ANY directory entry, including hidden dotfiles (e.g., .git, .spikes, .env),

  • PERMISSION_SHELL_DECLARED Note

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

    .githooks/update-readme-tree.py, line 13 result = subprocess.run(cmd, capture_output=True, text=True, timeout=5)

  • INSTALL_DOCUMENTED_INSTALLER Note

    Documentation shows an installer that pipes a download into a shell.

    README.md, line 35 curl -fsSL https://spikes.sh/install.sh | sh

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

    .githooks/update-readme-tree.py, line 13

    result = subprocess.run(cmd, capture_output=True, text=True, timeout=5)

  • Install and update

    Note

    README documents an installer that pipes a download into a shell. The docs document an installer that pipes a download into a shell.

    INSTALL_DOCUMENTED_INSTALLER

    README.md, line 35

    curl -fsSL https://spikes.sh/install.sh | sh

    install.sh, line 3

    # Usage: curl -fsSL https://spikes.sh/install.sh | sh

    packages/spikes-mcp/lib.js, line 104

    " curl -fsSL https://spikes.sh/install.sh | sh\n" +

    Show more

    packages/spikes-mcp/lib.js, line 119

    " curl -fsSL https://spikes.sh/install.sh | sh\n" +

    packages/spikes-mcp/lib.js, line 153

    " curl -fsSL https://spikes.sh/install.sh | sh\n" +

    posts/vibe-coding-feedback.md, line 123

    curl -fsSL https://spikes.sh/install | sh

    site/agents.md, line 218

    curl -fsSL https://spikes.sh/install.sh | sh

    site/docs.html.md, line 33

    curl -fsSL https://spikes.sh/install.sh | sh

    site/install.sh, line 3

    # Usage: curl -fsSL https://spikes.sh/install.sh | sh

    .factory/validation/agent-discovery/user-testing/flows/discovery-docs.json, line 21

    "site/llms.txt includes commands: 'curl -fsSL https://spikes.sh/install.sh | sh' and get_spikes first-query instruction"

    .factory/validation/agent-discovery/user-testing/flows/discovery-wrapper-rerun.json, line 43

    "stderr": "spikes-mcp: downloading binary for aarch64-apple-darwin...\\nspikes-mcp: Binary not found (HTTP 404). The release may not exist yet for this version.\\nFallback: install

    site/docs.html, line 753

    <pre><code>curl -fsSL https://spikes.sh/install.sh | sh</code></pre>

    site/index-v2.html, line 1044

    <code id="agent-cmd" style="font-size: 13px;">Install spikes (curl -fsSL https://spikes.sh/install.sh | sh), then run spikes inject on my project and spikes serve to preview it</co

    site/index-v2.html, line 1054

    <code id="install-cmd">curl -fsSL https://spikes.sh/install.sh | sh</code>

    site/index.html, line 1139

    <code id="agent-cmd" style="font-size: 13px;">Install spikes (curl -fsSL https://spikes.sh/install.sh | sh), then run spikes inject on my project and spikes serve to preview it</co

    site/index.html, line 1149

    <code id="install-cmd">curl -fsSL https://spikes.sh/install.sh | sh</code>

    site/llms-full.txt, line 24

    curl -fsSL https://spikes.sh/install.sh | sh

    site/llms-full.txt, line 64

    curl -fsSL https://spikes.sh/install.sh | sh

    site/llms-full.txt, line 485

    - Install: `curl -fsSL https://spikes.sh/install.sh | sh`

    site/llms.txt, line 114

    curl -fsSL https://spikes.sh/install.sh | sh

    site/llms.txt, line 171

    curl -fsSL https://spikes.sh/install.sh | sh

  • Network

    Concern

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

    NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST

    install.sh, line 29

    LATEST=$(curl -fsSL "https://api.github.com/repos/${REPO}/releases/latest" | grep '"tag_name"' | cut -d'"' -f4)

    install.sh, line 40

    curl -fsSL "$URL" | tar -xz -C "$TMPDIR"

    cli/src/commands/deploy.rs, line 432

    curl -X POST "https://YOUR_WORKER/spikes?token={}" \

    Show more

    cli/src/commands/deploy.rs, line 447

    curl "https://YOUR_WORKER/spikes?token={}"

    cli/src/commands/deploy.rs, line 455

    curl "https://YOUR_WORKER/spikes/abc123?token={}"

    site/install.sh, line 29

    LATEST=$(curl -fsSL "https://api.github.com/repos/${REPO}/releases/latest" | grep '"tag_name"' | cut -d'"' -f4)

    site/install.sh, line 40

    curl -fsSL "$URL" | tar -xz -C "$TMPDIR"

    site/spikes.js, line 2368

    return fetch(publicBase + '/submissions', {

    docs/API.md, line 379

    const res = await fetch('https://spikes.sh/spikes', {

    docs/API.md, line 643

    const res = await fetch('https://spikes.sh/public/submissions', {

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_DOTENV

    cli/src/commands/deploy.rs, line 99

    /// ANY directory entry, including hidden dotfiles (e.g., .git, .spikes, .env),

    cli/src/commands/deploy.rs, line 107

    // This prevents scaffolding into directories with .git/, .spikes/, .env, etc.

    cli/src/commands/deploy.rs, line 604

    fs::write(env_dir.join(".env"), "SECRET=value").unwrap();

    Show more

    cli/src/commands/deploy.rs, line 606

    // .env file counts as non-empty

    cli/src/commands/deploy.rs, line 607

    assert!(!is_directory_empty(&env_dir).unwrap(), "Dir with .env file should be considered non-empty");

  • 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.md).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Note

Hygiene check of commit 3ad94a9cce0e. requests shell access. The manifest names this permission. README documents an installer that pipes a download into a shell. The docs document an installer that pipes a download into a shell. can reach api.github.com. The description does not name that host. can reach a host that is not written as a fixed address. can reach your_worker. The description does not name that host. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: 3ad94a9cce0e7db450d1c9ec0a1687ab68f6b3b5

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