Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Polar Mcp

Polar MCP

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 NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST SECRETS_PATH_DOTENV

Why this grade

  • PERMISSION_DELETE_FILES Low

    Contains a call that can delete files.

    src/services/token-store.ts, line 38 await fs.unlink(this.tokenPath).catch((error: NodeJS.ErrnoException) => {

  • NETWORK_NO_FIXED_HOST Low

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

    scripts/smoke-http.mjs, line 30 const request = http.get(url, { timeout: 1000 }, (response) => {

  • NETWORK_UNNAMED_HOST Low

    Calls a fixed host that the description does not name.

    scripts/smoke-http.mjs, line 30 const request = http.get(url, { timeout: 1000 }, (response) => {

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    .gitignore, line 3 .env

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/services/token-store.ts, line 38

    await fs.unlink(this.tokenPath).catch((error: NodeJS.ErrnoException) => {

    src/services/token-store.ts, line 65

    await fs.unlink(this.lockPath).catch(() => undefined);

  • 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 www.polar.com. The description does not name that host.

    NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST

    scripts/smoke-http.mjs, line 30

    const request = http.get(url, { timeout: 1000 }, (response) => {

    src/services/endpoint-contracts.ts, line 12

    // Keep this matrix aligned with https://www.polar.com/polar-api-v4/swagger.yaml and live curl checks.

    src/services/http-cache.ts, line 43

    const inner = options.innerFetch ?? ((u, i) => fetch(u, i));

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_DOTENV

    .gitignore, line 2

    dist/

    .gitignore, line 3

    .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 cb19b15d3a15. can delete files. can reach a host that is not written as a fixed address. can reach www.polar.com. The description does not name that host. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: cb19b15d3a15c0e95859522d99cb6436157889ec

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