security-headers skillA
security-headers is agent-read markdown (skill) from fusengine/agents: Use when verifying or configuring HTTP security headers (CSP, HSTS, CORS, X-Frame-Options) for a web application (Next.js, Laravel, Express, Django)..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
<objective> This skill audits and configures HTTP security headers for a web application: Content-Security-Policy and Strict-Transport-Security (HIGH severity if missing), X-Content-Type-Options and X-Frame-Options (MEDIUM), and Referrer-Policy, Permissions-Policy, X-XSS-Protection (LOW). It detects the framework (Next.js next.config.js headers/middleware.ts, Laravel SecurityHeaders middleware, Express helmet, Django SECURE_* settings), checks the current configuration against best practice, generates a framework-specific fix, and validates the headers are properly set. </objective> # Security Headers Skill ## Overview Audit and configure HTTP security headers for web applications. ## Required Headers | Header | Purpose | Severity if Missing | |--------|---------|-------------------| | Content-Security-Policy | Prevent XSS/injection | HIGH | | Strict-Transport-Security | Force HTTPS | HIGH | | X-Content-Type-Options | Prevent MIME sniffing | MEDIUM | | X-Frame-Options | Prevent clickjacking | MEDIUM | | Referrer-Policy | Control referrer info | LOW | | Permissions-Policy | Control browser features | LOW | | X-XSS-Protection | Legacy XSS filter | LOW | ## Workflow …
Read the whole file at its exact version.
How to install
mdr add fusengine/agents/security-headers@git:20260729.3b91eedmdr add fusengine/agents/security-headers@sha256:114016d1265d34fePin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_edoya7utf6hsttt2)
1 badge views in 30 days
Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260729.3b91eed latest | 2026-07-29 | 3b91eed | 2,057 B | A | view · diff |
| git:20260705.ba8ee52 | 2026-07-05 | ba8ee52 | 1,584 B | A | view · diff |
| git:20260705.8c2f9bc | 2026-07-05 | 8c2f9bc | 1,582 B | A | view · diff |
| git:20260221.ef8fc89 | 2026-02-21 | ef8fc89 | 1,466 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (2057 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
fusengine/agents · 28 stars · license MIT · pushed 2026-09-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_edoya7utf6hsttt2 GET https://markdownregistry.com/api/v1/resolve?ref=fusengine/agents/security-headers GET https://markdownregistry.com/api/v1/blob/114016d1265d34fe513463650af79a1f71bf7a001577affbb223b4074223f288
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