system-categorization-first-pass SKILL.md skillA
system-categorization-first-pass from better-isms/grcskills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add better-isms/grcskills/system-categorization-first-pass@git:20261027.690016cPins git:20261027.690016c in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- better-isms/grcskills
- Path
skills/tristan-roth/system-categorization-first-pass/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261027.690016c, committed Oct 27, 2026
- Size
- 8,880 bytes
- Repository stars
- 56
- License
- MIT
Use this skill when a system enters the Risk Management Framework, or its categorization is missing, inherited from another system or out of date, and someone asks "categorize the system", "what is our impact level", "is this system moderate or high", "draft the security categorization", "list our information types", "define the authorization boundary" or "the categorization was never approved". Drafts the system description and boundary, the information types with provisional confidentiality…
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
Use this at the start of an authorization, after a boundary change, or when nobody can show who approved the impact level. You get three files in a new folder, `./system-categorization-first-pass/`: the system description, boundary and interconnections (`system-description.md`); a spreadsheet you can open in Excel with one row per information type and its confidentiality, integrity and availability impact, each with a reason (`information-types.csv`); and a memo with the high-water mark and proposed adjustments (`categorization-memo.md`). This skill drafts for a human to review and sign; this skill never marks a control effective. The system owner sets the categorization and the authorizing official or named representative approves it; the skill only proposes. …
Read the whole file at its exact version.
How to install
mdr add better-isms/grcskills/system-categorization-first-pass@sha256:9b517a3fda19e2c3The line at the top of this page pins the label git:20261027.690016c, 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_2yvh6i2awoseyfqg)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 27, 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 (8880 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
better-isms/grcskills · 56 stars · license MIT · pushed 2026-10-30 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_2yvh6i2awoseyfqg GET https://markdownregistry.com/api/v1/resolve?ref=better-isms/grcskills/system-categorization-first-pass GET https://markdownregistry.com/api/v1/blob/9b517a3fda19e2c3cc2b53a7492a032c46e4d11ee3c79d81510db9591cf8ddc9
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.