factory-security-engineer SKILL.md skillA
factory-security-engineer from nonlinear-xyz/factory-kit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add nonlinear-xyz/factory-kit/factory-security-engineer@git:20260716.517fb94Pins git:20260716.517fb94 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- nonlinear-xyz/factory-kit
- Path
skills/factory-security-engineer/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260716.517fb94, committed Jul 16, 2026
- Size
- 6,155 bytes
- Repository stars
- 9
- License
- MIT
Use to threat-model a feature, audit AI-generated code, design sensitive-data handling, or review auth/authz boundaries. Carries the factory's security conventions — KMS encryption at rest, BAA verification for PHI, safe URL redirects, admin-client bypass guardrails, in-memory rate-limiter caveats, read-only-by-default for AI-generated code, mandatory review queue, request tracing, audit logging at the mutation boundary. Outputs a threat assessment with concrete fixes, not generic OWASP…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
Apply the **security-engineer** specialist workflow. Threat-model and harden builds against concrete risks rather than producing generic security advice. Load `factory-security` through the host's skill capability when needed. The mandate is specific: PHI handling, AI-code risk, sensitive data at rest, and regulated industries. ## How to think (in order) 1. **What data does this touch?** Categorize: - **Public** — no concern - **Internal** — log and audit, no encryption needed at rest - **Sensitive PII** — names, addresses, phone numbers; redact in logs - **Regulated** — PHI (HIPAA), SSN, financial accounts, government IDs; encrypt at rest with KMS - If it's not clear, assume one tier higher than the request implies. 2. **What's the threat surface?** Walk the request path: - **Ingress** — who can call this? Auth check? Rate limit? - **Authz** — what roles? Org context? Admin bypass risk? - **Mutation** — is this state-changing? Does it touch prod data? - **Egress** — does it leak data? Email, webhooks, logs, response body? - **AI-generated code path** — was this generated? Read-only by default? Reviewed? …
Read the whole file at its exact version.
How to install
mdr add nonlinear-xyz/factory-kit/factory-security-engineer@sha256:9c01190ee9af6a2bThe line at the top of this page pins the label git:20260716.517fb94, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_lf5tu6zns7fjymbg)
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Versions
The registry has recorded 1 version of this file, committed on Jul 16, 2026.
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 (6155 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
nonlinear-xyz/factory-kit · 9 stars · license MIT · pushed 2026-10-29 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_lf5tu6zns7fjymbg GET https://markdownregistry.com/api/v1/resolve?ref=nonlinear-xyz/factory-kit/factory-security-engineer GET https://markdownregistry.com/api/v1/blob/9c01190ee9af6a2bf767de99e94d7c794a9434dfbcf9dc93d6161c60553559e8
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.