Security Headers

Name: Security Headers
Author: basitalisandhu

by basitalisandhuversion 0.3.0i★ –iRuns on your computer

Registry nameio.github.basitalisandhu/mcp-security-headers

Install

Overview

Description from the maker (original English)

Fetch a URL's response headers and grade CSP, HSTS, X-Frame-Options and related security headers.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Cybersecurity

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
The registry lists no key to fill in.

You need

DockerDocker installed

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "security-headers": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/basitalisandhu/mcp-security-headers:0.3.0"
      ]
    }
  }
}

Run this in your terminal

claude mcp add security-headers -- docker run -i --rm ghcr.io/basitalisandhu/mcp-security-headers:0.3.0

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "security-headers": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/basitalisandhu/mcp-security-headers:0.3.0"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "security-headers": {
      "type": "stdio",
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/basitalisandhu/mcp-security-headers:0.3.0"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account basitalisandhu, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Cybersecurityi

More stars than 0% of the other 994 servers in this category
Published to the registry more recently than 80% of the other 994 servers in this category
Basic checks equal to or better than 100% of the other 994 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Security Headers safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.3.0) reached the registry 10 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Docker on your computer.

What can I use instead?

In the same category: SML Risk Firewall, ipdata MCP by usefulapi, MaxMind minFraud MCP by usefulapi

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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Pre-trade risk checks for agent trades: orders vs your limits, signed receipts.

Runs in the cloudUpdated today

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ipdata MCP by usefulapi

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Runs in the cloudUpdated today

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MaxMind minFraud MCP by usefulapi

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MCP server for MaxMind minFraud — score transactions for fraud risk from your AI assistant.

Runs in the cloudUpdated today

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

security-headers MCP server

Fetches a public URL's response headers and grades Content-Security-Policy, Strict-Transport-Security, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, the Cross-Origin-* headers, Set-Cookie attributes and information-disclosure headers, with an explanation and a recommendation per header. The response body is never downloaded.

Part of dev-mcp-servers. Stdio transport only; the server never opens a port.

Tools

Tool	Input	What it returns
`check_url_headers`	`url`, `method?` (HEAD or GET), `max_redirects?` (0 to 10, default 5)	HEAD request (GET on 405/501) to a public http(s) URL, redirects followed with the same checks on every hop, then a graded report. Refuses localhost, `.local`, `.internal`, private, loopback, link-local, CGNAT and cloud-metadata addresses, including names that resolve to them.
`grade_headers`	`headers` (object), `https?`	The same grading for headers you already have, for example from `curl -I`. No network.
`explain_header`	`header`	Purpose, recommended value and reference for one header.

Install

Claude Code:

claude mcp add security-headers -- docker run --rm -i ghcr.io/basitalisandhu/mcp-security-headers:0.3.0

Add -s user to make it available in every project. Any client that reads .mcp.json (Claude Code, Claude Desktop, Cursor):

"mcpServers": { "security-headers": { "command": "docker", "args": ["run", "--rm", "-i", "ghcr.io/basitalisandhu/mcp-security-headers:0.3.0"] } } }

Pin the version as shown so that an update cannot change what runs in your editor without you noticing. The package is not on npmjs.com yet, so npx does not work; see the repository README for GitHub Packages npm. From a checkout, use "command": "node", "args": [" /packages/security-headers/dist/index.js"] after npm install && npm run build at the repository root.

What it touches

Network: One request to the URL you give plus at most max_redirects hops, each validated. 10 s timeout per request. The host is resolved and every address checked before connecting; this does not defeat DNS rebinding between the check and the connection, so do not point the tool at hosts you do not trust to answer honestly. No telemetry.
Local files: None.
Telemetry: none.

Notes

Scores: CSP 25, HSTS 20, X-Frame-Options 10, X-Content-Type-Options 10, Referrer-Policy 10, Set-Cookie 10, Permissions-Policy 5, COOP 5, CORP 5. Grades: A+ (95% and no fail), A (85% and no fail), B (70%), C (55%), D (40%), otherwise F.
A report-only CSP earns nothing: it is not enforced.
Permissions-Policy loses its five points when camera, microphone, geolocation, payment, usb, display-capture or midi permits every origin with *. Disabled () and explicit origin allowlists retain the points; this is a heuristic, not a full browser policy validator.
A good grade means the headers are configured well, not that the application is secure.

Build and test

npm install        # at the repository root

npm run build -w @basitalisandhu/mcp-security-headers npm test -w @basitalisandhu/mcp-security-headers

Tests use node:test and the SDK's in-memory transport; they do not reach the network.

Licence

MIT. See LICENSE.

Security Headers

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Cybersecurityi

Common questions

Alternatives

SML Risk Firewall

ipdata MCP by usefulapi

MaxMind minFraud MCP by usefulapi

README from the maker

security-headers MCP server

Tools

Install

What it touches

Notes

Build and test

Licence