Grades are a hygiene check, not a security guarantee.

MCP, MCP server

sessions

sessions

Compatibility: Not stated.

Grade D

Two or more Medium findings, or a High finding. Only try it in a sandbox.

Graded by PlugVetRubric v2

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

Rescanned at commit 9293eb6a8ed7.

INSTALL_REMOTE_SCRIPT

Why this grade

  • INSTALL_REMOTE_SCRIPT High

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

    src/site.ts, line 21 export const WRAPPED_CMD = `curl -fsSL ${SITE_URL}/wrapped | 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

    Pass

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

  • Install and update

    Serious

    install fetches a script from the network.

    INSTALL_REMOTE_SCRIPT

    src/site.ts, line 21

    export const WRAPPED_CMD = `curl -fsSL ${SITE_URL}/wrapped | sh`;

    src/wrapped/share-card.test.ts, line 553

    expect(all).toContain(`curl -fsSL https://${SITE_HOST}/wrapped | sh`);

    src/wrapped/share-card.test.ts, line 586

    expect(all).toContain(`curl -fsSL https://${SITE_HOST}/wrapped | sh`);

    Show more

    src/wrapped/terminal.test.ts, line 86

    expect(out).toContain('curl -fsSL https://sessions.engineering/wrapped | sh');

    package.json, line 37

    @modelcontextprotocol/sdk

    site/public/wrapped, line 4

    # curl -fsSL https://sessions.engineering/wrapped | sh

    site/public/wrapped, line 5

    # curl -fsSL https://sessions.engineering/wrapped | sh -s -- --year 2025

    site/src/pages/index.astro, line 343

    <code class="font-mono text-[14px] text-ink">curl -fsSL https://sessions.engineering/wrapped | sh</code>

    README.md, line 414

    curl -fsSL https://sessions.engineering/wrapped | sh

    README.md, line 415

    curl -fsSL https://sessions.engineering/wrapped | sh -s -- --year 2025 # pass options after --

  • Network

    Concern

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

    NETWORK_NO_FIXED_HOST

    scripts/generate-pricing-embed.ts, line 46

    const res = await fetch(url, { signal: ctrl.signal });

    src/cache.ts, line 128

    * should leave no durable copy behind (the curl one-liner's one-off wrapped). */

    src/release-matrix.test.ts, line 74

    // Guards the curl one-liner (site/public/wrapped). It builds the tarball name from

    Show more

    src/release-matrix.test.ts, line 77

    describe('curl one-liner', () => {

    src/site.ts, line 19

    // The scheme is explicit: a bare host makes curl start over plain HTTP, and the

    src/memory/scan.test.ts, line 95

    'Never pipe $GITHUB_TOKEN through curl in CI scripts',

    src/memory/scan.ts, line 24

    // (`curl ... $TOKEN`, `cat .env`). All three are omitted here, on the same

    src/report/pricing-cache.ts, line 28

    const res = await fetch(url, { signal: AbortSignal.timeout(FETCH_TIMEOUT_MS) });

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    src/memory/scan.ts, line 24

    // (`curl ... $TOKEN`, `cat .env`). All three are omitted here, on the same

    src/memory/scan.ts, line 26

    // DATABASE_URL through doppler, never in .env" and "never pipe $GITHUB_TOKEN

    src/memory/scan.test.ts, line 94

    'Always set DATABASE_URL through doppler, never in a .env file',

    Show more

    src/memory/scan.test.ts, line 96

    'Never cat .env or credentials files into the chat',

    .gitignore, line 18

    # dotenv environment variable files

    .gitignore, line 19

    .env

  • 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

    Pass

    The latest commit is within the last 365 days.

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Note

Hygiene check of commit 9293eb6a8ed7. install fetches a script from the network. can reach a host that is not written as a fixed address. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: 9293eb6a8ed7a92c27c9c531061bd20e5b8bd1cb

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