By GRCEngClub
Automate NIST 800-53 compliance by selecting and tailoring baselines (low/moderate/high), applying FedRAMP/DoD overlays, generating SSP sections in Markdown/YAML/DOCX, assessing control families, deep-diving implementations for AWS/Azure/GCP, and setting up continuous monitoring with vulnerability scanning and reporting.
Assess compliance with NIST 800-53 controls
Set up NIST 800-53 continuous monitoring per RA-5, SI-4, and CA-7
Interactive NIST 800-53 control tailoring for specific baselines and environments
Deep dive analysis of NIST 800-53 control families with implementation guidance
Apply NIST 800-53 overlays (FedRAMP, DoD, Privacy, etc.) to existing baselines
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I've worked both sides of FedRAMP: years as a 3PAO assessor, and I build open-source GRC tooling for the teams stuck doing the work by hand. Every team I've assessed ends up re-inventing the same pipeline: pull evidence from AWS, GitHub, GCP, and Okta; map it to SOC 2 or NIST 800-53 or FedRAMP Moderate/High; generate a gap report; fight with OSCAL. I wanted one toolkit that did the whole pipeline end-to-end without bolting me into a vendor platform. This is it.
Install as a Claude Code plugin. Run:
/grc-engineer:gap-assessment SOC2,FedRAMP-Moderate --sources=aws,github
You get a prioritized, effort-estimated, remediation-linked gap report backed by 1,468 Secure Controls Framework controls crosswalked to 249 frameworks.
Not affiliated with Anthropic. Independent open-source project. Claude, Anthropic, and any related marks are property of their respective owners.
A few opinionated design choices worth naming up front, since they're most of what makes this different from a Vanta or Drata clone.
SCF is the right crosswalk source. Everyone rolls their own control-mapping tables. They're usually incomplete, and nobody maintains them past the quarter they were built in. SCF has 1,468 controls mapped bidirectionally to 249 frameworks, publishes quarterly, and ships as a static JSON API. Use it as the backbone. Stop hand-maintaining CSVs.
Connectors should be thin. Most GRC platforms bundle giant agents that do everything. That's a vendor lock-in pattern, not an engineering pattern. Every connector here is a few hundred lines that shells out to tools you already have (aws, gcloud, gh, direct Okta API). You can rip and replace any of them without touching the rest of the toolkit.
Framework plugins don't reproduce standard text. ISO 27001, PCI DSS, and HITRUST CSF text is copyrighted. Plenty of GRC tools publish that text inside their product and hope nobody notices. This toolkit references control IDs and ships implementation guidance in my own words. Your licensed copy of the standard is the source of truth.
Vanta, Drata, OneTrust, and Archer are good at what they do. They're also expensive, slow to extend, and assume you have a compliance team. This is for teams that want the engineering layer without the platform lock-in, and for 3PAOs and assessors who want to cross-check what a platform is reporting.
# In Claude Code
/plugin marketplace add ethanolivertroy/claude-grc-engineering
/plugin install grc-engineer@ethanolivertroy-plugins
For a first run with no cloud credentials, use your GitHub account as the data source:
/plugin install github-inspector@ethanolivertroy-plugins
/plugin install soc2@ethanolivertroy-plugins
/github-inspector:setup
/github-inspector:collect --scope=@me
/grc-engineer:gap-assessment SOC2 --sources=github-inspector
Full walkthrough: docs/QUICKSTART.md.
| Workflow | Command |
|---|---|
| Gap-assess an environment against one or many frameworks at once | /grc-engineer:gap-assessment |
| Scan Terraform, CloudFormation, or Kubernetes for compliance violations, optionally auto-fix | /grc-engineer:scan-iac |
| Validate a control end-to-end: config, functionality, compliance | /grc-engineer:test-control |
| Generate remediation (Terraform modules, Python evidence scripts, Rego/Cedar policies) | /grc-engineer:generate-implementation, generate-policy |
| See one control across every framework it maps to | /grc-engineer:map-controls-unified |
| Find conflicting requirements across frameworks, with "most-restrictive wins" resolution | /grc-engineer:find-conflicts |
| Optimize multi-framework implementation (satisfy many with one) | /grc-engineer:optimize-multi-framework |
| Continuous monitoring with Slack, PagerDuty, or email alerts | /grc-engineer:monitor-continuous |
| Check pipeline health: which connectors are configured, last-run, cache freshness | /grc-engineer:pipeline-status |
| Review a PR for compliance regressions before merge | /grc-engineer:review-pr |
| Build audit workpapers and evidence packages | /grc-auditor:generate-workpaper, /grc-engineer:collect-evidence |
| Generate OSCAL SSP, SAP, SAR, or POA&M from findings and framework configs | /oscal:* (see OSCAL plugin) |
| Analyze a vendor security questionnaire (SIG, CAIQ, Yardstick) | /grc-tprm:analyze-questionnaire |
Every command's reference page lives in its plugin's commands/ directory with full input and output documentation.
npx claudepluginhub grcengclub/claude-grc-engineering --plugin nist-800-53Deploy a serverless trust center to publish your company's compliance posture. Supports AWS deployment with S3, CloudFront, Lambda, DynamoDB, Cognito, and WAF.
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