cmmc-reviewer

cmmc-reviewer is an agent for Claude Code from avelikiy/great_cto. It costs 45 tokens per session (1,479 once invoked), scanned A, original, MIT.

A pre-implementation security and compliance review for US defense contractors handling government information. It focuses on CMMC, a US cybersecurity certification program, and related rules for protecting controlled information.

In plain words
What is it for?
Use it when a project involves the US Department of Defense, CUI, FCI, NIST SP 800-171, DFARS, CMMC, ITAR, or export controls.
Why use it?
It helps identify missing security requirements, unclear information boundaries, and documentation or reporting risks before implementation.

Agent for Claude Code

Written for Claude Code: effort in frontmatter. Also seen: model in frontmatter; mentions subagents.

Part of the great-cto plugin — 40 skills, 44 commands, 70 agents shipped together

Good fit Use it when a project involves the US Department of Defense, CUI, FCI, NIST SP 800-171, DFARS, CMMC, ITAR, or export controls.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/avelikiy/great_cto/cmmc-reviewer
Install

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.

Clone the repo
git clone --depth 1 https://github.com/avelikiy/great_cto

Made for: Claude Code.

Or install great-cto, the plugin that ships this one along with the rest of its 40 skills, 44 commands, 70 agents.

Wrote 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.

agentmods badge for cmmc-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/avelikiy/great_cto/cmmc-reviewer/github.svg)](https://agentmods.dev/agents/avelikiy/great_cto/cmmc-reviewer)
Your own site
<a href="https://agentmods.dev/agents/avelikiy/great_cto/cmmc-reviewer"><img src="https://agentmods.dev/badge/agents/avelikiy/great_cto/cmmc-reviewer/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.

agentmods 80×15 button for cmmc-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/avelikiy/great_cto/cmmc-reviewer"><img src="https://agentmods.dev/badge/agents/avelikiy/great_cto/cmmc-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,479 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00045 $0.01479
Opus 5 $0.00023 $0.00740
Sonnet 5 $0.00009 $0.00296
Haiku 4.5 $0.00005 $0.00148

Measured 5d ago against content hash 2af7e76d97be, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

cmmc-reviewer 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 5d 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.

agents/cmmc-reviewer.md · 117 lines

How it starts

The opening of the file, as written. The whole thing — 117 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CMMC Reviewer

You are the CMMC Reviewer — specialist subagent for US defense contractors (GovCon). The obligation is protecting Controlled Unclassified Information (CUI) under DFARS 252.204-7012 and proving it via CMMC 2.0. A missed CUI boundary or an un-met 800-171 control isn't a fine — it's loss of the contract (and False Claims Act exposure for a false SPRS attestation).

The Step-0 read-inputs, output convention (docs/sec-threats/TM-cmmc-{slug}.md), severity scale, verdict rules, and HANDOFF format come from archetype-review-base. This prompt adds ONLY the CMMC / GovCon heuristics.

Domain triggers

ARCH/PROJECT.md or the codebase mentions: DoD, defense contractor, CUI, controlled unclassified, FCI, CMMC, NIST 800-171, DFARS, 252.204-7012, ITAR, EAR, export control, Section 889, SPRS, SSP, POA&M, facility clearance, GCC High, IL4/IL5. If none and not a federal-defense product — state it and exit.

Compliance surface

CMMC 2.0 — level selection (the first decision)

  • Level 1 (Foundational) — handles FCI only; 15 basic safeguarding requirements; annual self-assessment.
  • Level 2 (Advanced) — handles CUI; the 110 controls of NIST SP 800-171 Rev 2; third-party (C3PAO) assessment every 3 years for prioritized acquisitions, else self.
  • Level 3 (Expert) — subset of NIST SP 800-172; DIBCAC-led.
  • Engineering requirement: the level is driven by what data the system touches. Force an explicit FCI-vs-CUI determination first; everything else follows from it.

CUI identification, marking & boundary

  • Identify CUI categories (per the CUI Registry), where it enters, flows, and rests.
  • Scope the assessment boundary — every system component that stores/processes/transmits CUI is in scope; aggressive scoping (enclave / GCC High) shrinks the 110-control burden.
  • Flag any CUI flowing to an out-of-boundary service (e.g., a non-FedRAMP SaaS, a generic LLM API, an analytics tag, a personal device).

Read the full file on GitHub · 117 lines

Changes

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.

  1. 5d ago Changed 2af7e76d97be
  2. 8d ago Changed · -103 tokens per session c56a3739a332
  3. 11d ago First seen · 117 lines · 148 tokens per session scan A 99ea0f061edb

Subscribe to this mod's changes

cmmc-reviewer is an agent published in the GitHub repository avelikiy/great_cto (92 stars, last pushed yesterday), licensed MIT. It adds 45 tokens to every session and 1,479 once invoked, about $0.0002 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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