security-and-trust-boundaries SKILL.md skillA
security-and-trust-boundaries from oribarilan/97 is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add oribarilan/97/security-and-trust-boundaries@git:20260510.17c5ab8Pins git:20260510.17c5ab8 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- oribarilan/97
- Path
skills/security-and-trust-boundaries/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260510.17c5ab8, committed May 10, 2026
- First version recorded
- May 5, 2026
- Size
- 16,650 bytes
- Repository stars
- 25
- License
- a license file GitHub does not identify
Use when writing or reviewing code that parses user input, builds SQL/shell commands, handles secrets/credentials, hashes passwords, changes auth checks, deserializes untrusted data, or constructs paths/URLs from input.
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
# Security and Trust Boundaries ## Overview Common security mistakes grouped by trust boundary: input concatenated into a query, a token logged "for debugging", an unguarded endpoint, `pickle.loads` on untrusted bytes. **When code crosses a trust boundary, stop and run the matching checks before you commit.** This is a **rigid** skill. Jump to the sub-section that matches what you're writing and run that sub-section's checks. These checks matter most when untrusted input is crossing into a system with real users — production endpoint, shared service, anything that touches user data, secrets, or auth state. In MVPs, prototypes, internal dev tools, and one-off scripts, prefer the simplest thing that works and re-invoke this skill before the code reaches users. **Three rules apply at every stage, even prototypes: no committed credentials in source, no string-built SQL or shell commands, no `pickle.loads` (or equivalent) on untrusted input. Surface these in your summary to the user even in throwaway code.** …
Read the whole file at its exact version.
How to install
mdr add oribarilan/97/security-and-trust-boundaries@sha256:482f023e1dcbcd2dThe line at the top of this page pins the label git:20260510.17c5ab8, 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_2lk5nwwrckwovin2)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between May 5, 2026 and May 10, 2026, about one every day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260510.17c5ab8 latest | 2026-05-10 | 17c5ab8 | 16,650 B | A | view · diff |
| git:20260508.b5cf0ab | 2026-05-08 | b5cf0ab | 16,747 B | A | view · diff |
| git:20260508.c645b75 | 2026-05-08 | c645b75 | 18,115 B | A | view · diff |
| git:20260505.a8c3896 | 2026-05-05 | a8c3896 | 15,540 B | A | view · diff |
| git:20260505.d49a2a0 | 2026-05-05 | d49a2a0 | 14,859 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 (16650 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
oribarilan/97 · 25 stars · license a license file GitHub does not identify · pushed 2026-10-29 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_2lk5nwwrckwovin2 GET https://markdownregistry.com/api/v1/resolve?ref=oribarilan/97/security-and-trust-boundaries GET https://markdownregistry.com/api/v1/blob/482f023e1dcbcd2d8de405e3d02d2ef56ba5c9ca8f41e2aefcc41eb5b6162c55
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.