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/agentic-agile-authoring --skill component-definitiongit clone --depth 1 https://github.com/oscal-compass/agentic-agile-authoringWrote 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/agentic-agile-authoring/component-definition)<a href="https://agentmods.dev/skills/oscal-compass/agentic-agile-authoring/component-definition"><img src="https://agentmods.dev/badge/skills/oscal-compass/agentic-agile-authoring/component-definition.svg" alt="Measured on agentmods" 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 | $0.00057 | $0.01108 |
| Opus 5 | $0.00028 | $0.00554 |
| Sonnet 5 | $0.00011 | $0.00222 |
| Haiku 4.5 | $0.00006 | $0.00111 |
Grade A, and why
component-definition 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 6d 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 — 107 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Component Definition
Purpose
Given a component (a concrete system element such as a service, OS, or audit tool), translate the high-level abstract controls defined in an OSCAL catalog or profile into component-specific, actionable control implementations.
This skill bridges the gap between what a control requires in the abstract and how a specific component fulfills or checks it in practice.
Concepts
- service component: implements controls directly (firewall, OS, middleware, application)
- validation component: verifies that another component's rules are actually enforced (scanner, audit tool, monitoring agent)
A component definition captures rules per component, maps them to catalog controls, and optionally links validation checks to service rules.
Main Tasks
- Identify which components are in scope and their type (service / validation)
- Map catalog/profile controls to component-level rules
- Author CSV expressing those rules and mappings
- Generate
component-definition.jsonfrom the CSV
Sub-skills
- csv-authoring.md — START HERE — Detailed guide to authoring CSV files for component definitions using Python csv.writer()
- csv-to-markdown.md — Generate human-readable markdown preview of component definition CSV before OSCAL conversion
- csv-to-oscal-cd.md — Convert an authored CSV into an OSCAL component definition using the
trestle_task_csv_to_oscal_cdMCP tool
Workflow
- Confirm the trestle workspace and target profile/catalog with the user
- Identify components and their types (ask user for validation component if not specified)
- For each component, enumerate the rules and map them to control IDs
- Author CSV using Python csv.writer() (see csv-authoring.md for detailed guidance)
- Use Python lists, not manual string concatenation
- Verify column counts and namespace URLs programmatically
- Never use
write_to_filefor CSV construction
- Generate markdown preview using
csv_to_markdown.pyto show component vs control vs rule/check mappings - Confirm CSV content with the user before generating
- Invoke
trestle_task_csv_to_oscal_cdto producecomponent-definition.json
What ships with it
6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 6d ago First seen · 107 lines · 57 tokens per session scan A 30cd27f3c2de
component-definition is a skill published in the GitHub repository oscal-compass/agentic-agile-authoring (2 stars, last pushed 4d ago), licensed Apache-2.0. It adds 57 tokens to every session and 1,108 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 2026-08-31.
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