# 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. $0.004 per URL plus $0.001 per run.

- **URL**: https://apify.com/gochujang/security-headers-checker.md
- **Developed by:** [Hojun Lee](https://apify.com/gochujang) (community)
- **Categories:** Developer tools
- **Features:** Limited permissions
- **Stats:** 4 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/actors/running/actors-in-store.md#pay-per-event

## What's an Apify Actor?

An Actor is a serverless cloud program that runs on the Apify platform. It has two run modes.
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.

Apify vocabulary and the platform model are defined once, in the agent quickstart at https://apify.com/agents.md.

## 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.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For examples already wired to this Actor's own input schema, see the [API](#api) section below.

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).

# README

## Website Security Headers Checker

> **Security headers checker** and **HTTP security audit** tool: scan CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy for any URL. **Web vulnerability scanner** returns security score (0-100) + letter grade (A+ to F) + actionable findings. **CSP checker**. Batch up to 500 URLs. **$0.004/URL + $0.001 per run.**

**Keywords:** security headers · HTTP security audit · CSP checker · HSTS validator · web vulnerability scanner · X-Frame-Options · Permissions-Policy · website security score

***

### ⚡ 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** (active contract): $0.004 per URL audited (`url-audited`) plus $0.001 per run (`apify-actor-start`, per GB of memory, minimum one).

| Run | URLs | Cost |
|---|---|---|
| Single site audit | 1 | $0.005 ($0.004 + $0.001 start) |
| 10-domain report | 10 | $0.041 |
| 100-domain bulk check | 100 | $0.401 |

***

### 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)

**Keywords:** security headers, CSP checker, HSTS, X-Frame-Options, HTTP security audit, web vulnerability scanner, security score, Content-Security-Policy, web application security

# 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
}
```

# Actor output Schema

## `results` (type: `string`):

No description

# 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(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).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": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,gochujang/security-headers-checker"
        }
    }
}
```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/SI5EwbsA1fhbMWptl/builds/mwJFomqXZ4q5OGQl0/openapi.json