Write SAR-ready control assessments in hours, not days.
CoAssessor is the AI-powered NIST SP 800-53 security control assessment platform built for federal compliance professionals. Look up any control in plain English, upload artifacts for instant sufficiency scoring, generate SAR-style writeups in seconds, and track your full assessment in one workspace.
30-day free trial for founding members — no credit card required. Then $19.99/month. Cancel anytime.
Founding 50: limited seats remaining (updated live on the live site). Includes free NIST 800-53 course by Kamil Zakari (CISSP, CISM, CISA). If CoAssessor doesn't save you at least 5 hours on your next assessment, tell us and we'll refund your month.
What CoAssessor Does
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Control Lookup:
Search the full NIST SP 800-53 Rev 5 library with plain-language translations and testing procedures
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Artifact Analysis:
Upload evidence and get instant AI-powered sufficiency scoring
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Writeup Generator:
Generate SAR-style assessment writeups in seconds
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Gap Analysis:
Identify compliance gaps across your control baseline
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Evidence Management:
Track, organize, and link evidence to controls
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AI Assessment Chat:
Ask assessment questions and get authoritative answers from NIST publications
Built For
Independent Assessors (IAs), Third-Party Assessment Organizations (3PAOs), ISSOs, FedRAMP Consultants, Agency System Owners, and Compliance & Risk Professionals.
Pricing
Professional:
$19.99/month — Full control lookup, artifact analysis, writeup generator, gap analysis, evidence management. 30-day free trial for founding members (no credit card). Cancel anytime, self-service. Your work is never deleted.
View full pricing details →
Frequently Asked Questions
Is my assessment data secure?
CoAssessor runs on hardened cloud infrastructure with encryption at rest and in transit. Access is controlled per-user with role-based permissions, and every action is logged in a full audit trail. Your data is never shared with third parties or used to train models.
Does CoAssessor cover NIST 800-53 Rev 5?
Yes. CoAssessor includes the complete NIST SP 800-53 Rev 5 control catalog — every family, every control, every enhancement — with plain-language translations, testing procedures, and FedRAMP mapping.
Can AI-generated writeups be trusted in a real audit?
CoAssessor drafts the narrative — the assessor reviews and owns the final writeup. Every edit is tracked in a full audit trail. The AI accelerates the first draft; human judgment ensures the final quality. This is an assistive workflow, not a black box.
What does it cost?
Founding members get a 30-day free trial with no credit card required. After the trial, the Professional plan is $19.99/month. Cancel anytime, self-service. Your work is never deleted.
Free NIST 800-53 Course
Expert-led course on NIST SP 800-53 Rev 5 for working assessors. Taught by Kamil Zakari (CISSP, CISM, CISA). Free for founding members — no credit card required.
Enroll free →
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