Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Nfi Tools

CLI tool and MCP server for handling sensitive information without exposing secret values to AI assistants.

Compatibility: Not stated.

Grade C

One Medium finding. Read the report before installing.

Graded by PlugVetRubric v2

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

OBFUSCATION_ENCODED_BLOB

Why this grade

  • OBFUSCATION_ENCODED_BLOB Medium

    Contains a long base64 shaped string in a file that should be readable.

    src/ui/page.html, line 36 src: url(data:font/woff2;base64,d09GMgABAAAAADHIABAAAAAAoJwAADFnAAIAQgAAAAAAAAAAAAAAAAAAAAAAAAAAGjobqB4ckm4GYD9TVEFUTACDThEICoHqPIG2aQE2AiQDiVgLhG4ABCAFhBgHIAwHG0GDJezYk4DuAF7STS6u

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. can reach registry.npmjs.org. The description does not name that host.

    NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST

    src/ui/index.ts, line 288

    await fetch(cfUrl, { method: "HEAD", signal: AbortSignal.timeout(3000) });

    docs/index.html, line 552

    fetch('https://registry.npmjs.org/nfi-tools/latest')

    src/ui/page.html, line 656

    const resp = await fetch("/submit", {

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_DOTENV

    src/core/gitignore.ts, line 62

    // Wildcard patterns like *.env or .env*

    src/core/validate.ts, line 7

    * that could corrupt .env files or structured format files.

    src/core/formats/detect.ts, line 16

    ".env": "env",

    Show more

    src/core/formats/detect.ts, line 27

    // Handle .env, .env.local, .env.production, etc.

    src/core/formats/detect.ts, line 28

    if (basename.startsWith(".env")) {

    src/core/formats/env.ts, line 81

    // .env files are flat, depth is irrelevant

    README.md, line 5

    When you tell an AI assistant "add my Stripe key to .env", the assistant calls `nfi` which opens a browser-based prompt for you to enter the secret. The value goes straight into th

    README.md, line 16

    npx nfi-tools set .env STRIPE_SECRET_KEY

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Concern

    contains an encoded blob in a file that should be readable.

    OBFUSCATION_ENCODED_BLOB

    src/ui/page.html, line 36

    src: url(data:font/woff2;base64,d09GMgABAAAAADHIABAAAAAAoJwAADFnAAIAQgAAAAAAAAAAAAAAAAAAAAAAAAAAGjobqB4ckm4GYD9TVEFUTACDThEICoHqPIG2aQE2AiQDiVgLhG4ABCAFhBgHIAwHG0GDJezYk4DuAF7STS6u

    src/ui/page.html, line 43

    src: url(data:font/woff2;base64,d09GMgABAAAAADFwABAAAAAAoFgAADEQAAIAQgAAAAAAAAAAAAAAAAAAAAAAAAAAGjobqCQckm4GYD9TVEFUTACDThEICoHpfIG2DwE2AiQDiVgLhG4ABCAFhBAHIAwHG+WCJXjzmOR2MFiuznYf

    src/ui/page.html, line 50

    src: url(data:font/woff2;base64,d09GMgABAAAAADJwABAAAAAAn/QAADIPAAIAQgAAAAAAAAAAAAAAAAAAAAAAAAAAGjQbqB4ckjwGYD9TVEFUXgCDThEICoHpQIG4cgE2AiQDiVALhGoABCAFhCAHIAwHGySEVUds2DgA4Py29ZGB

    Show more

    src/ui/page.html, line 57

    src: url(data:font/woff2;base64,d09GMgABAAAAACLUABAAAAAAU6wAACJ1AAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGoEsG4FmHI8aBmA/U1RBVEQAg04RCAr7GOMJATYCJAOIHAuEFAAEIAWFBgcgDAcbcUQT7jBjHIAxJi8m+68T

  • 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 973d2e869453. can reach a host that is not written as a fixed address. can reach registry.npmjs.org. The description does not name that host. reads a credential or environment file. contains an encoded blob in a file that should be readable.

Date and source

Date checked:

View source

github.com

Commit graded: 973d2e8694534351f0e2ea5cfc2475c092f642e4

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