Passive HTTP Security Header Evidence API

HTTP Security Headers Checker — HSTS, CSP, Grade A-F

ninhothedev/security-headers-checker

Bulk security headers scanner: grade any URL A-F on HSTS, CSP, X-Frame-Options & 3 more headers, list missing ones and server leaks. For security audits, agencies and compliance.

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.

HTTP Headers Checker - Security Header Audit

benthepythondev/http-headers-checker

Check HTTP response headers for websites, including status code, server, cache settings, redirects and common security headers.

HTTP Status Code Checker - Bulk URLs & Redirect Chains

dltik/http-status-checker

Bulk-check HTTP status codes and full redirect chains for any list of URLs. For each URL: final status, every redirect hop (status + Location), response time, content-type and server. Pure HTTP, reads headers only — fast and cheap. Great for SEO migrations, link audits and uptime spot-checks.

Check common HTTP security headers for one or more URLs (Content-Security-Policy, Strict-Transport-Security, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, COOP/COEP/CORP). Useful for quick security hardening audits.

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.

HTTP API - Flexible Client for Prototyping and Automation

superlativetech/http-api

Easily test, integrate, and automate APIs—configure method, headers, query params, body, timeout, and retries, no code or setup required. Ideal for rapid prototyping, endpoint monitoring, workflows, and sales & marketing automation.

Http Header Inspector

zerobreak/http-header-inspector

HTTP header inspector that pulls response headers from any URL, scores them for security gaps, and flags missing CSP, HSTS, and X-Frame-Options, so teams can audit caching, redirects, and server config without running curl.

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.

HTTP Security Headers Analyzer

andok/security-headers-analyzer

Audit HTTP response headers (CSP, HSTS, X-Frame-Options) to verify web application security and compliance standards.