Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add oscal-compass-lab/compliance-trestle-skills --skill trestle-oscal-modelsgit clone --depth 1 https://github.com/oscal-compass-lab/compliance-trestle-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/oscal-compass-lab/compliance-trestle-skills/trestle-oscal-models)<a href="https://agentmods.dev/skills/oscal-compass-lab/compliance-trestle-skills/trestle-oscal-models"><img src="https://agentmods.dev/badge/skills/oscal-compass-lab/compliance-trestle-skills/trestle-oscal-models/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/oscal-compass-lab/compliance-trestle-skills/trestle-oscal-models"><img src="https://agentmods.dev/badge/skills/oscal-compass-lab/compliance-trestle-skills/trestle-oscal-models.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00063 | $0.02044 |
| Opus 5 | $0.00032 | $0.01022 |
| Sonnet 5 | $0.00013 | $0.00409 |
| Haiku 4.5 | $0.00006 | $0.00204 |
Grade A, and why
trestle-oscal-models scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 181 lines — stays where its author put it; the contents beside it link to each section on GitHub.
OSCAL Model Types in Trestle
The 7 OSCAL Model Types
| Model Type | CLI Name | Directory | Description |
|---|---|---|---|
| Catalog | catalog |
catalogs/ |
Set of security controls. Example: NIST 800-53 |
| Profile | profile |
profiles/ |
Selection and change of controls from catalogs |
| Component Definition | component-definition |
component-definitions/ |
How a component implements controls |
| System Security Plan | system-security-plan |
system-security-plans/ |
Full system security documentation |
| Assessment Plan | assessment-plan |
assessment-plans/ |
Plan for assessment of security controls |
| Assessment Results | assessment-results |
assessment-results/ |
Results of a security assessment |
| POA&M | plan-of-action-and-milestones |
plan-of-action-and-milestones/ |
Remediation tracking |
Model Relationships
Catalog (controls)
↓ imports
Profile (selects + modifies controls)
↓ resolved profile catalog
Component Definition (how components implement controls)
↓ combined
System Security Plan (complete system documentation)
↓ assessed by
Assessment Plan → Assessment Results → POA&M
The Catalog → Profile → SSP Chain
- A Catalog defines controls. Example: NIST 800-53 has about 1000 controls.
- A Profile imports controls from catalogs or profiles. It selects a subset. It can change parameters.
- A Resolved Profile Catalog is the effective control set after profile changes.
- A Component Definition describes how specific components address controls.
- An SSP combines a profile and component definitions into implementation documentation.
Profile Imports
A profile can import from:
- One or more catalogs
- One or more other profiles
- A mix of catalogs and profiles
Each import selects specific controls. An import can change parameters. An import can add content.
Common OSCAL Fields
All models share:
uuid: Unique identifiermetadata: Title, version, last-modified, oscal-version, roles, partiesback-matter: Resources, citations, attachments
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 12d ago First seen · 181 lines · 63 tokens per session scan A 7bba543a6035
trestle-oscal-models is a skill published in the GitHub repository oscal-compass-lab/compliance-trestle-skills (16 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 63 tokens to every session and 2,044 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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