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 nathanimphilipos/synergos-grc --skill grc-knowledgegit clone --depth 1 https://github.com/nathanimphilipos/synergos-grcWrote 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/nathanimphilipos/synergos-grc/grc-knowledge)<a href="https://agentmods.dev/skills/nathanimphilipos/synergos-grc/grc-knowledge"><img src="https://agentmods.dev/badge/skills/nathanimphilipos/synergos-grc/grc-knowledge/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/nathanimphilipos/synergos-grc/grc-knowledge"><img src="https://agentmods.dev/badge/skills/nathanimphilipos/synergos-grc/grc-knowledge.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 | $0.00086 | $0.04932 |
| Opus 5 | $0.00043 | $0.02466 |
| Sonnet 5 | $0.00017 | $0.00986 |
| Haiku 4.5 | $0.00009 | $0.00493 |
Grade A, and why
grc-knowledge 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 9d 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 — 350 lines — stays where its author put it; the contents beside it link to each section on GitHub.
GRC Knowledge Skill
You are a senior GRC (Governance, Risk, and Compliance) analyst with deep expertise across federal and commercial compliance frameworks. You cite specific control IDs, know baseline assignments, understand assessment procedures, and speak the language of auditors, ISSOs, ISSMs, and compliance engineers.
Core Principles
- Cite specifics — Always reference control IDs (e.g., AC-2, CC6.1, A.8.1), baseline levels, and document sections. Never give vague compliance advice.
- Baseline-aware — When discussing NIST/FedRAMP controls, always clarify which baseline (Low, Moderate, High) applies. Default to Moderate unless told otherwise.
- Framework-native terminology — Use each framework's own terms: "controls" for NIST, "criteria" for SOC 2, "requirements" for PCI DSS, "clauses" for ISO 27001, "safeguards" for CIS, "practices" for CMMC.
- Cloud-agnostic — Provide framework knowledge without assuming a specific cloud provider. Implementation details belong in the separate GRC Engineering skill.
- Evidence-oriented — When discussing controls, mention what evidence/artifacts an auditor expects to see.
- Current versions — NIST 800-53 Rev 5, FedRAMP Rev 5, CMMC 2.0, PCI DSS v4.0.1, ISO 27001:2022, CIS Controls v8.1, CSA CCM v4, COBIT 2019.
Data Handling and Sensitivity Notice
Federal GRC artifacts (SSPs, POA&Ms, policies, CRMs) often contain CUI, PII, system architecture details, vulnerability data, and agency names. The review commands in this plugin are designed to provide useful feedback without requiring sensitive specifics.
Redaction Reminder
All document review commands (review-narrative, review-ssp, review-poam, review-policy, review-crm, score-maturity) must display the following notice at the top of every response, before any analysis:
Before sharing GRC artifacts: Consider replacing real system names, IP addresses, personnel names, agency names, and CVE IDs with generic placeholders (e.g., "[Agency Name]", "[System Name]", "10.x.x.x"). This tool reviews structural quality — specific identifiers aren't needed for useful feedback.
What ships with it
60 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.
- audits/3pao-assessment.md 10 KB
- audits/aa-lifecycle.md 10 KB
- audits/boundary-guidance.md 11 KB
- audits/control-inheritance.md 9.5 KB
- audits/document-section-requirements.md 19 KB
- audits/internal-audit.md 11 KB
- audits/iso-certification.md 11 KB
- audits/narrative-quality-criteria.md 12 KB
- audits/pci-qsa.md 13 KB
- audits/readiness-gap-analysis.md 11 KB
- audits/sar-response-patterns.md 9.2 KB
- audits/significant-change-criteria.md 7.5 KB
- audits/soc2-audit.md 12 KB
- audits/tabletop-scenarios.md 12 KB
- conmon/annual-deliverables.md 14 KB
- conmon/automated-tooling.md 11 KB
- conmon/compliance-calendar.md 9.8 KB
- conmon/iscm-lifecycle.md 11 KB
- conmon/monthly-deliverables.md 9.9 KB
- conmon/poam-management.md 18 KB
- frameworks/cis-controls-v8.md 20 KB
- frameworks/cmmc.md 18 KB
- frameworks/cobit-2019.md 17 KB
- frameworks/csa-ccm-v4.md 18 KB
- frameworks/fedramp.md 21 KB
- frameworks/fisma.md 17 KB
- frameworks/gdpr.md 22 KB
- frameworks/hipaa.md 21 KB
- frameworks/iso-27001-27002.md 20 KB
- frameworks/nist-800-53.md 23 KB
- frameworks/nist-rev4-to-rev5.md 12 KB
- frameworks/oscal-reference.md 9.7 KB
- frameworks/pci-dss-v4.md 19 KB
- frameworks/slsa.md 16 KB
- frameworks/soc2.md 25 KB
- frameworks/supply-chain-srm.md 14 KB
- mappings/cross-framework-matrix.md 16 KB
- mappings/nist-to-cis.md 28 KB
- mappings/nist-to-cmmc.md 25 KB
- mappings/nist-to-cobit.md 23 KB
- mappings/nist-to-csa-ccm.md 19 KB
- mappings/nist-to-hipaa.md 15 KB
- mappings/nist-to-iso27001.md 19 KB
- mappings/nist-to-pci-dss.md 23 KB
- mappings/nist-to-soc2.md 22 KB
- oscal/fedramp-moderate-rev5/ac.json 454 KB
- oscal/fedramp-moderate-rev5/at.json 107 KB
- oscal/fedramp-moderate-rev5/au.json 177 KB
- oscal/fedramp-moderate-rev5/ca.json 208 KB
- oscal/fedramp-moderate-rev5/cm.json 361 KB
- oscal/fedramp-moderate-rev5/cp.json 264 KB
- oscal/fedramp-moderate-rev5/ia.json 273 KB
- oscal/fedramp-moderate-rev5/ir.json 203 KB
- oscal/fedramp-moderate-rev5/ma.json 137 KB
- oscal/fedramp-moderate-rev5/metadata.json 2.3 KB
- oscal/fedramp-moderate-rev5/mp.json 114 KB
- oscal/fedramp-moderate-rev5/pe.json 227 KB
- oscal/fedramp-moderate-rev5/pl.json 182 KB
- oscal/fedramp-moderate-rev5/ps.json 135 KB
- oscal/fedramp-moderate-rev5/ra.json 156 KB
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.
- 9d ago First seen · 350 lines · 86 tokens per session scan A 68e3e5ae411d
grc-knowledge is a skill published in the GitHub repository nathanimphilipos/synergos-grc (5 stars, last pushed 6mo ago), licensed MIT. It adds 86 tokens to every session and 4,932 once invoked, about $0.0004 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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