# Website Security Headers Checker (`gochujang/security-headers-checker`) Actor

Audit HTTP security headers for any URL: CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy. Returns a 0-100 score + letter grade + actionable findings. $0.005 per URL.

- **URL**: https://apify.com/gochujang/security-headers-checker.md
- **Developed by:** [Hojun Lee](https://apify.com/gochujang) (community)
- **Categories:** Developer tools, Automation, News
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $4.00 / 1,000 url auditeds

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-event

## What's an Apify Actor?

Actors are web data automations that power AI and operations. They run on the Apify platform to scrape websites, process data, connect APIs, and automate workflows.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.
Actors are written with capital "A".

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.
The best way to integrate Actors is as follows.

- **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use).
- **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`.
- **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`.
- **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`.
- **Any other language** — the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).

# README

## Website Security Headers Checker

> Audit HTTP security headers for any URL and get a **security score (0-100) + letter grade (A+ to F) + actionable findings**. Checks CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, and more. Batch up to 500 URLs. **$0.005 per URL.**

***

### ⚡ Run in 30 seconds

Click **Start** with default settings — audits the sample URL's HTTP security headers and returns a score out of 100, a letter grade from A+ to F, and a list of missing or misconfigured headers with remediation advice. No API key needed.

***

### Why check security headers?

Security headers are the first line of defense against XSS, clickjacking, MIME sniffing, and data leakage. Yet most websites ship with zero or misconfigured headers — leaving visitors exposed. Major bug bounty programs (HackerOne, Bugcrowd) explicitly award points for missing headers.

This actor gives you a **quantified, actionable report** in seconds: what's missing, what's misconfigured, and how severe each issue is — without running a full pentest.

***

### What you get

#### Per-URL output

```json
{
  "_type": "security_audit",
  "url": "https://example.com",
  "ok": true,
  "score": 45,
  "grade": "D",
  "https": true,
  "final_url": "https://example.com/",
  "status_code": 200,
  "server": "nginx/1.24",
  "headers_present": {
    "strict-transport-security": "max-age=31536000; includeSubDomains",
    "x-content-type-options": "nosniff"
  },
  "headers_missing": [
    "content-security-policy",
    "x-frame-options",
    "referrer-policy",
    "permissions-policy"
  ],
  "findings": [
    {
      "header": "content-security-policy",
      "severity": "high",
      "finding": "Missing content-security-policy — restricts allowed content sources"
    }
  ]
}
```

***

### Input Parameters

| Parameter | Type | Default | Description |
|---|---|---|---|
| `urls` | array | — | List of URLs to audit (batch mode) |
| `url` | string | — | Single URL to audit (used when `urls` is empty) |
| `followRedirects` | boolean | `true` | Follow HTTP → HTTPS redirects and audit the final URL |
| `userAgent` | string | — | Custom User-Agent for requests |

***

### Scoring

| Header | Weight | Notes |
|---|---|---|
| `Content-Security-Policy` | 25 pts | Deducted if `unsafe-inline`, `unsafe-eval`, or wildcards present |
| `Strict-Transport-Security` | 20 pts | Deducted if max-age < 1 year or missing `includeSubDomains` |
| `X-Frame-Options` | 15 pts | DENY or SAMEORIGIN |
| `X-Content-Type-Options` | 10 pts | Must be `nosniff` |
| `Referrer-Policy` | 10 pts | |
| `Permissions-Policy` | 10 pts | |
| `X-XSS-Protection` | 5 pts | Legacy but still checked |
| `Cross-Origin-Opener-Policy` | 5 pts | |

| Grade | Score |
|---|---|
| A+ | 90-100 |
| A | 80-89 |
| B | 70-79 |
| C | 60-69 |
| D | 50-59 |
| F | 0-49 |

***

### Use cases

1. **Security audits** — Bulk-check all your domains before a pentest engagement
2. **Compliance** — Verify headers meet PCI-DSS / HIPAA / SOC2 requirements
3. **Bug bounty recon** — Quickly scan targets for easy header wins
4. **DevOps monitoring** — Schedule weekly checks; alert on regression
5. **Client reporting** — Generate a scored report per domain for security consulting

***

### Quick start

#### Single site

```json
{ "url": "https://yourcompany.com" }
```

#### Bulk audit

```json
{
  "urls": [
    "https://site1.com",
    "https://site2.com"
  ]
}
```

***

### Pricing

**Pay-Per-Event**: $0.005 per URL audited.

| Run | URLs | Cost |
|---|---|---|
| Single site audit | 1 | $0.005 |
| 10-domain report | 10 | $0.05 |
| 100-domain bulk check | 100 | $0.50 |

***

### Related actors

- [Phishing URL Detector](https://apify.com/gochujang/phishing-url-detector) — Check URLs for phishing indicators
- [Email & Domain OSINT](https://apify.com/gochujang/email-domain-osint) — WHOIS, DNS, SSL, breach data
- [HTML Metadata Extractor](https://apify.com/gochujang/html-metadata-extractor) — OpenGraph, JSON-LD, meta tags

***

### Feedback

[Leave a review on Apify Store](https://apify.com/gochujang/security-headers-checker#reviews)

# Actor input Schema

## `urls` (type: `array`):

List of URLs to audit (batch mode).

## `url` (type: `string`):

Single URL to audit (used when 'urls' is empty).

## `followRedirects` (type: `boolean`):

Follow HTTP redirects (e.g. HTTP → HTTPS) and audit the final URL.

## `userAgent` (type: `string`):

Custom User-Agent string for requests.

## Actor input object example

```json
{
  "urls": [
    "https://example.com"
  ],
  "followRedirects": true
}
```

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "urls": [
        "https://example.com"
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("gochujang/security-headers-checker").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = { "urls": ["https://example.com"] }

# Run the Actor and wait for it to finish
run = client.actor("gochujang/security-headers-checker").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print("💾 Check your data here: https://console.apify.com/storage/datasets/" + run["defaultDatasetId"])
for item in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "urls": [
    "https://example.com"
  ]
}' |
apify call gochujang/security-headers-checker --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "command": "npx",
            "args": [
                "mcp-remote",
                "https://mcp.apify.com/?tools=gochujang/security-headers-checker",
                "--header",
                "Authorization: Bearer <YOUR_API_TOKEN>"
            ]
        }
    }
}

```

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/SI5EwbsA1fhbMWptl/builds/n1jSTSgWIUylFvODN/openapi.json