secure-software-engineering SKILL.md skillA
secure-software-engineering from magnus919/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add magnus919/agent-skills/secure-software-engineering@git:20261101.83d2784Pins git:20261101.83d2784 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- magnus919/agent-skills
- Path
secure-software-engineering/SKILL.md- Versions recorded
- 4
- Latest version
- git:20261101.83d2784, committed Nov 1, 2026
- First version recorded
- Jul 13, 2026
- Size
- 7,524 bytes
- Repository stars
- 166
- License
- MIT
Use when designing or implementing software securely: define security requirements, threat-model a feature, choose secure defaults, design authentication and authorization, handle untrusted data and secrets, evaluate dependencies, design multi-tenant trust boundaries, or review security-sensitive changes. Use for prevention during requirements, design, implementation, and review; not for post-build security assessments or scanning an existing codebase.
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
# Secure Software Engineering Build security into decisions before defects reach production. This is a prevention-oriented workflow, not a claim that a design or release is secure. Record assumptions, the evidence collected, residual risks, and the owner of any accepted exception. ## When To Use Use this skill to answer "How do we build this securely?" for a new feature, integration, service, API, tenant boundary, AI capability, or release. Start early and revisit affected decisions when architecture, data flows, dependencies, or threats change. Do not use it for an authorized post-build assessment: use [security-audit-methodology](../security-audit-methodology/SKILL.md). Do not use it as a vulnerability scanner for an existing codebase; use an authorized scanning tool or specialist security assessment. Use [spec-driven-development](../spec-driven-development/SKILL.md) when the task is to formalize the resulting requirements and phase gates, and [verification-methodology](../verification-methodology/SKILL.md) to make evidence-backed completion claims. ## When not to use …
Read the whole file at its exact version.
How to install
mdr add magnus919/agent-skills/secure-software-engineering@sha256:560c43c61da66a75The line at the top of this page pins the label git:20261101.83d2784, 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_lzwde5pihei7ne4y)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Jul 13, 2026 and Nov 1, 2026, about one every 37 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261101.83d2784 latest | 2026-11-01 | 83d2784 | 7,524 B | A | view · diff |
| git:20260821.016be9c | 2026-08-21 | 016be9c | 6,868 B | A | view · diff |
| git:20260802.c5fd9c9 | 2026-08-02 | c5fd9c9 | 6,136 B | A | view · diff |
| git:20260713.172f3a1 | 2026-07-13 | 172f3a1 | 5,981 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 (7524 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
magnus919/agent-skills · 166 stars · license MIT · pushed 2026-11-04 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_lzwde5pihei7ne4y GET https://markdownregistry.com/api/v1/resolve?ref=magnus919/agent-skills/secure-software-engineering GET https://markdownregistry.com/api/v1/blob/560c43c61da66a75d4b705410a4350313d66a6737db56e9e0f3b476be061f4df
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.