secure-coding SKILL.md skillA

secure-coding from aethrox/doctrine is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add aethrox/doctrine/secure-coding@git:20260809.2a45dbb

Pins git:20260809.2a45dbb in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: aethrox/doctrine
Path: skills/secure-coding/SKILL.md
Versions recorded: 3
Latest version: git:20260809.2a45dbb, committed Aug 9, 2026
First version recorded: Aug 9, 2026
Size: 5,693 bytes
Repository stars: 19
License: MIT

Secure-coding discipline mapped to the OWASP Top 10, checked at the point of writing code, not after. Covers input validation and injection classes, broken access control, secrets handling, dependency/supply-chain risk, and safe error handling/logging. Use when writing code that crosses a trust boundary (handles user input, auth, payments, file paths, external commands, or third-party dependencies), when reviewing a diff for security issues, or when the user asks for a security review, threat…

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 Coding

Security is checked **at the point of writing the code**, not bolted on after. Every trust boundary gets its input validated, every secret goes through the environment or a vault and never a literal in source, and every new dependency gets a known-vulnerability check before it merges. Retrofit security review finds problems too late to fix cheaply; this skill runs while the code is still being written.

A **trust boundary** is any point where data crosses from a less-trusted source into more-trusted code: a request body, a query parameter, a file upload, an environment variable set by a deploy pipeline, a response from a third-party API, a value read from a database another service writes to.

## Phase 1: Input validation and injection classes

At every trust boundary, validate before use: allowlist the shape you expect rather than denylisting what you don't:

| Injection class | Root cause | Fix |
|---|---|---|
| SQL / NoSQL injection | user input concatenated into a query | parameterised queries / prepared statements: never string-built queries |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add aethrox/doctrine/secure-coding@sha256:62a7988195718dd4

The line at the top of this page pins the label git:20260809.2a45dbb, 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.

Badge

[![mdr](https://markdownregistry.com/badge/art_kkxgpd4ubnjdqzpr.svg)](https://markdownregistry.com/a/art_kkxgpd4ubnjdqzpr)

5 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 3 versions of this file, all committed on Aug 9, 2026.

version	committed	commit	size	audit
git:20260809.2a45dbb latest	2026-08-09	2a45dbb	5,693 B	A	view · diff
git:20260809.5c2aad2	2026-08-09	5c2aad2	5,597 B	A	view · diff
git:20260809.21f29b0	2026-08-09	21f29b0	5,642 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (5693 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

GitHub

aethrox/doctrine · 19 stars · license MIT · pushed 2026-09-11 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_kkxgpd4ubnjdqzpr
GET https://markdownregistry.com/api/v1/resolve?ref=aethrox/doctrine/secure-coding
GET https://markdownregistry.com/api/v1/blob/62a7988195718dd434990fba28517b8ec943c74d5f8461b6bf13f40fac33f423

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.

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