Grades are a hygiene check, not a security guarantee.

MCP, MCP server

io.github.cameron-creations/numberbroom-mcp

A remote MCP server that lets AI agents verify US phone numbers through the NumberBroom API: carrier-level line type, carrier name, an activity score with a likely-disconnected flag, and known-litigator status.

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

Why this grade

  • NETWORK_NO_FIXED_HOST Low

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

    src/index.ts, line 129 return await fetch(url, { ...init, headers });

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

    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.

    NETWORK_NO_FIXED_HOST

    src/index.ts, line 129

    return await fetch(url, { ...init, headers });

    src/index.ts, line 441

    fetch(request: Request, env: Env, ctx: ExecutionContext & { props?: Props; auth?: { token?: string } }) {

    src/index.ts, line 624

    async fetch(request: Request, env: Env): Promise<Response> {

    Show more

    src/index.ts, line 708

    fetch(request: Request, env: Env, ctx: ExecutionContext) {

    src/index.ts, line 710

    return provider.fetch(request, env, ctx);

  • Secrets

    Pass

    No read of a credential file or secret environment variable found.

  • 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.

Get the full report on this tool, £49

Note

Hygiene check of commit 6b0080a050c5. can reach a host that is not written as a fixed address.

Date and source

Date checked:

View source

github.com

Commit graded: 6b0080a050c56223065c5916a2590d0f1a99ba2f

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Read how this letter is chosen