Ca Threat Model Agent Skill
Opt-in lightweight STRIDE pass for a sensitive feature before implementation. Not a routine gate — invoke it when a change warrants security thought.
Install
one command, takes just this skill from the repositorynpx skills add https://github.com/arbiterForge/codeArbiter --skill ca-threat-modelThe instruction itself
5 sections, as written by the author/ca-threat-model — STRIDE pass (opt-in)
Optional, lightweight pre-implementation security review for a sensitive change — new external endpoints, new secrets-handling paths, new auth/authz flows. Opt-in, not a routine gate: nothing routes here automatically. Invoke it when a change warrants the thought; skip it otherwise. Read-only — modifies no file. Describe what the component does, what data it handles, and which actors interact with it.
Routes to
security-architecture (<plugin-root>/routines/security-architecture/SKILL.md). The skill reads:
<project-root>/.codearbiter/security-controls.md— compliance requirements.<project-root>/.codearbiter/decisions/— existing security-relevant ADRs.
Output
## Scope
<what is being analyzed>
## STRIDE findings
| Threat | Category | Likelihood | Impact | Control |
|--------|-------------|------------|--------|------------------------------|
| ... | S/T/R/I/D/E | H/M/L | H/M/L | <control or NONE — needs one> |
## Recommended controls before implementation
- <control 1>
## Clearance
CLEAR TO IMPLEMENT | BLOCKED — resolve findings first
When NOT to use
- Reviewing already-written code →
/ca-review. - A full cross-cutting review →
/ca-checkpoint. - A security question →
/ca-btw.
Hard gate
Read-only — modifies no file. This is an advisory pass, not a routine gate; it never runs unless
invoked.
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How to use it
Take arbiterforge/codearbiter-ca-threat-model from the repository into ~/.claude/skills for personal
use, or into .claude/skills inside a project.
The agent identifies a skill by the name field in its header. Two skills with the
same name cannot sit side by side — one of them will be ignored.