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Security Headers Checker - HSTS, CSP, Cookies, Grade A+ to F

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Check the HTTP security headers of many websites: HSTS, CSP, X-Frame-Options, nosniff, Referrer and Permissions policies, cookie flags, HTTPS redirect. A+ to F grade with fixes. $1 per 1,000 sites.

Pricing

from $0.80 / 1,000 site checkeds

Rating

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(0)

Developer

Emmanuel Vingadassalon

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Monthly active users

2 days ago

Last modified

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You can access the Security Headers Checker - HSTS, CSP, Cookies, Grade A+ to F programmatically from your own applications by using the Apify API. You can also choose the language preference from below. To use the Apify API, you’ll need an Apify account and your API token, found in API & Integrations in Apify Console.

Python

JavaScript

CLI

OpenAPI

HTTP

MCP

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Security Headers Checker - HSTS, CSP, Grade A+ to F OpenAPI definition

OpenAPI is a standard for designing and describing RESTful APIs, allowing developers to define API structure, endpoints, and data formats in a machine-readable way. It simplifies API development, integration, and documentation.

OpenAPI is effective when used with AI agents and GPTs by standardizing how these systems interact with various APIs, for reliable integrations and efficient communication.

By defining machine-readable API specifications, OpenAPI allows AI models like GPTs to understand and use varied data sources, improving accuracy. This accelerates development, reduces errors, and provides context-aware responses, making OpenAPI a core component for AI applications.

You can download the OpenAPI definitions for Security Headers Checker - HSTS, CSP, Cookies, Grade A+ to F from the options below:

OpenAPI.json

If you’d like to learn more about how OpenAPI powers GPTs, read our blog post.

You can also check out our other API clients:

Security Headers Checker - HSTS, CSP, Cookies, Grade A+ to F API in Python

Security Headers Checker - HSTS, CSP, Cookies, Grade A+ to F API in JavaScript

Security Headers Checker - HSTS, CSP, Cookies, Grade A+ to F API through CLI

Security Headers Checker - HSTS, CSP, Cookies, Grade A+ to F API

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Broken Link Checker - Find Dead 404 Links

logiover/broken-link-checker

Site-wide broken link checker: crawl any website, find 404 and dead links, export the link audit to CSV or JSON with source page and status code.

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Security Headers Checker API - HTTP Security Scanner

pink_comic/security-headers-checker

Security Headers Checker API for bulk HTTP security scans. Audit HSTS, CSP, X-Frame-Options, referrer and permissions policies, missing headers, website hardening gaps, and compliance posture. Returns grades, findings, and header evidence for security audits.

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HTTP Probe -- TLS, Security Headers, Redirects

jungle_synthesizer/ssl-security-headers-checker

Bulk site-health probe: TLS certificate, security-header grading (CSP, HSTS, X-Frame-Options, Permissions-Policy + 5 others, A/B/C/D/F grade), redirect chain, TTFB, HTTP/2 + HTTP/3, IPv6 reachability. Built for devops, security, and CI pipelines.

BowTiedRaccoon

Security Headers Checker - Audit CSP, HSTS, XFO and more

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Bikram Adhikari

Security Headers Checker

s3nafps/security-headers-checker

Check public URLs for common HTTP security headers including HSTS, Content Security Policy, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy. Export a simple website security header report as JSON or CSV.

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Security Headers Scanner

mahogany_songbird/security-headers-scanner

Report CSP, HSTS, X-Frame-Options, and other security headers with a simple A-F grade.

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Website Security Headers Checker

gochujang/security-headers-checker

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.

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HTTP Security Headers Auditor

phoenix2810/http-security-headers-auditor

Audit a public website's HTTP security response headers in one API call. Returns a letter grade, numeric score, per-header analysis, and actionable recommendations. Built for security teams, devops, and site migration QA.