Every day, ten more attorneys get sanctioned for AI-hallucinated citations. Every day, more clients waive privilege by pasting case files into ChatGPT. Sentinel sits between your firm and any AI tool you use, intercepts every paste, verifies every output, and logs every interaction in a court-ready audit trail. One subscription. Bar-defensible. Insurance-discount eligible. Built by an attorney.
Founding-customer pricing · 30% off year one · 30-day money-back guarantee
Citation checkers catch some hallucinations. Generic DLP flags some SSNs. Walled-garden legal AI protects only itself. Sentinel covers the lifecycle — input guard, output verifier, audit trail, policy framework, insurance discount.
Paste a brief, motion, or AI draft. In under thirty seconds, every citation is matched against real case law. Hallucinated cases flagged in red. Misquoted in yellow. A signed certificate, ready to file with the brief.
Sentinel watches every paste into ChatGPT, Claude, Gemini, Copilot, Perplexity. The instant it sees client admissions, SSNs, IOLTA references, or work product — it intercepts. Block, redact, or warn. You decide.
Append-only, hash-chained log of every AI interaction. Cryptographic timestamps. ABA Op. 512 attestation page auto-generated. One click to a twelve-page certified PDF.
ABA Op. 512 plus state ethics rules for all fifty states. Onboard your bar admissions; Sentinel applies the strictest rule. Auto-generated firm AI-use policy, ready to post.
Twelve dimensions per vendor — retention, training opt-out, BAA, SOC 2, residency, encryption, audit logging. Green, yellow, red. Updated quarterly. Tells you what you can paste where.
Hidden Unicode. White-on-white instructions in opposing counsel's PDF. Base64 payloads. Indirect injection in retrieved documents. Sentinel catches what your AI cannot.
A signed disclosure on file before you ever touch AI on the matter. Plain English, one-and-a-half pages, firm-branded. Three options: full, limited, or none. Sentinel enforces the choice.
Quarterly attestation PDF, carrier-formatted. We work with ALPS, ISBA Mutual, Embroker, AttPro, CNA, Markel, Bar Plan Mutual to formalize a documented risk-reduction credit. Even pre-partnership, the attestation alone is good evidence at renewal.
HEC Paris researcher Damien Charlotin tracks the live count. NPR reported ten new sanction cases on a single day in April 2026. Most attorneys never read ABA Formal Opinion 512. Most do not know whether their AI tool is enterprise-grade or consumer-grade. Sentinel was built so you do not become the next case.
View the live tracker →Even a 5% malpractice discount on a $4,500 annual premium pays for Solo Sentinel for eighteen months. We expect more, but the math holds at the floor.
Sentinel On-Prem (air-gapped Docker appliance) — $1,500/mo + $5,000 setup — for criminal defense, IP, M&A, and government-contract practices. Talk to us.
No sales call, no scheduling. Drop a real brief in your browser. Watch CourtListener flag the hallucinated citations. Generate the Sentinel Report PDF. Twelve minutes from now you'll know if it's worth $147/mo.