Grades are a hygiene check, not a security guarantee.

MCP, MCP server

com.onkernel/kernel-mcp-server

A Model Context Protocol (MCP) server that provides AI assistants with secure access to Kernel platform tools and browser automation capabilities.

Compatibility: Not stated.

Grade C

One Medium finding. Read the findings before installing.

Graded by PlugVetRubric v2

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

Rescanned at commit 5c0e58bd7528.

OBFUSCATION_ENCODED_BLOB

Why this grade

  • OBFUSCATION_ENCODED_BLOB Medium

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

    src/lib/mcp/apps/generated/managed-auth-app.ts, line 1 // Generated by scripts/build-managed-auth-app.mjs. Do not edit.

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

    Concern

    dependencies are not pinned.

    INSTALL_UNPINNED

    package.json, line 36

    @clerk/nextjs

  • Network

    Concern

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

    NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST

    fixtures/mcp-http-server.ts, line 97

    requests.get(`${clientId}:${codeChallenge}`) ?? null,

    fixtures/mcp-http-server.ts, line 152

    requests.delete(`${clientId}:${consumedRequest.codeChallenge}`);

    fixtures/mcp-http-server.ts, line 206

    async fetch(request) {

    Show more

    src/app/[transport]/dual-era.test.ts, line 138

    const response = await fetch(request);

    src/app/[transport]/dual-era.test.ts, line 331

    const authorized = await fetch(provider.authorizationUrl!, {

    src/app/[transport]/dual-era.test.ts, line 494

    const response = await fetch(endpoint, {

    src/app/[transport]/dual-era.test.ts, line 555

    const preflight = await fetch(endpoint, { method: "OPTIONS" });

    src/app/[transport]/dual-era.test.ts, line 567

    const response = await fetch(endpoint, {

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    fixtures/mcp-http-server.ts, line 10

    process.env.CLERK_SECRET_KEY = "

    fixtures/mcp-http-server.ts, line 12

    process.env.NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY = `pk_test_${Buffer.from("clerk.example.test$").toString("base64")}`;

    fixtures/mcp-http-server.ts, line 16

    delete process.env.POSTHOG_PROJECT_TOKEN;

    Show more

    fixtures/mcp-http-server.ts, line 21

    const signingKey = new TextEncoder().encode(process.env.CLERK_SECRET_KEY);

    scripts/record-oauth-redis-contract.ts, line 38

    process.env.CLERK_SECRET_KEY = "

    scripts/record-oauth-redis-contract.ts, line 139

    return createHmac("sha256", process.env.CLERK_SECRET_KEY!)

    scripts/record-oauth-redis-contract.ts, line 441

    CLERK_SECRET_KEY: process.env.CLERK_SECRET_KEY,

    src/app/[transport]/route.test.ts, line 8

    process.env.CLERK_SECRET_KEY ??= "test-clerk-secret";

    AGENTS.md, line 25

    cp .env.example .env.local

    .env.example, line 2

    # For local testing copy this file at kernel-mcp-server/.env.local

    .env.example, line 3

    # Values can be found at 1pass > DevEnvVars > MCP section, copy and past at .env.local

    .gitignore, line 15

    .env

    .gitignore, line 16

    .env.local

  • 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/lib/mcp/apps/generated/managed-auth-app.ts, line 1

    // Generated by scripts/build-managed-auth-app.mjs. Do not edit.

    src/lib/mcp/apps/generated/managed-auth-app.ts, line 2

    export const MANAGED_AUTH_APP_HTML = "<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n<meta charset=\"utf-8\" />\n<meta name=\"viewport\" content=\"width=device-width, initial-scale=1

  • 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 5c0e58bd7528. dependencies are not pinned. can reach a host that is not written as a fixed address. can reach example.com. 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: 5c0e58bd75280cedc89697e4c6c36de316fc9fc2

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