AI for Legal Work.
Without the Risk.
Gatekeeper OS is the secure AI gateway that lets Singapore law firms use powerful AI across their workflows without exposing client data, violating confidentiality obligations, or breaking PDPA compliance.
Built in Singapore · Aligned with MinLaw's March 2026 GenAI Guide · Privacy-preserving by design
Built for Singaporean Law Firms
Law firms want AI. Confidentiality rules won't allow it.
Lawyers deal with high-stakes, sensitive documents (client identities, evidence, financial and personal data).
Most AI tools require uploading content to external services, which many firms cannot approve.
Ad-hoc experimentation (copy/paste) is risky and inconsistent across the firm.
Firms want AI productivity, but lack a safe, standard way to use it on real matters.
AI is powerful, but legal needs the infrastructure to use it responsibly at scale.
THE SOLUTION
Gatekeeper OS. The Secure AI Gateway for Law Firms.
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Document Ingested Locally
PII Detected and Replaced
Masked Document Sent to AI
AI Processes Response
Placeholders Restored Locally
Context-Preserving Anonymisation
Structured placeholders maintain relationships and logic across all documents.
Zero Trust Architecture
On-premise deployment — the vendor never sees client data.
Fully Reversible
Placeholders restored with 100% fidelity when AI response returns.
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Suite of Tools
Gatekeeper OS brings everyday legal tools into one secure platform, so lawyers can work faster and with more consistency. These tools are built for law firms and in-house legal teams, and are designed to support lawyers.
Case Strategy
Draft research memos by analysing your case against Singapore precedents to find supporting or contradictory case law. Helps lawyers understand and build strategies on a case.
- Able to compare the case to older cases.
- The AI is trained with 15,000 over Singapore court cases.
- Instead of scrolling through old cases and manually reading through everything. The AI will help lawyers get exact info on a specific case.
Clause Guard
Reviews contracts and flags clauses that may be risky, unusual, or inconsistent with common expectations. Useful for first-pass review, quality control, and surfacing issues that need closer attention.
- Risk flags with plain-English explanations
- Suggested alternative wording (optional)
- Issue checklist for negotiation
Drafting Assistant
Helps create first drafts and improve existing drafts based on clear instructions and context. Designed to accelerate drafting while keeping lawyer judgment firmly in control.
- First drafts generated from structured prompts
- Rewrites for clarity, tone, and consistency
- Version comparisons and suggested edits
Timeline Builder
Extracts dates, events, and relationships from large sets of evidence — such as emails, statements, and reports — and turns them into a clear chronological timeline. Helps teams see the matter at a glance.
- Chronology of events with source references
- Gaps and inconsistencies flagged
- Export-ready timeline format
Deposition / Interview Question Generator
Generates targeted questions based on the facts and issues in a matter, helping lawyers prepare for depositions, witness interviews, and cross-examination. Supports structured, thorough preparation.
- Question sets organised by theme (credibility, timeline, intent)
- Follow-up questions and contradictions to probe
- Structured outline for preparation
Internal Knowledge Assistant
Lets teams ask focused questions about a case bundle or internal knowledge base and receive fast, cited answers. Reduces time spent searching through long documents and repeated requests for background.
- Direct answers with cited excerpts
- Fast retrieval of key clauses and facts
- Helps onboard new team members quickly
Together, these tools give legal teams one platform for consistent, repeatable AI assistance across their workflows.
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Law Firms
Small, mid-sized and large Singapore firms seeking a firm-wide governed approach to AI that satisfies compliance requirements and client expectations.
One Platform. Every Legal Team."
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In-House Legal Teams
Corporate legal departments handling sensitive commercial and financial data who need secure AI tools that integrate with existing enterprise infrastructure.
WHO IT IS FOR
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Legal Ops and Innovation
Practice management and technology leads building the next generation of legal service delivery — faster, more consistent and built on trustworthy infrastructure.
WHY VANTAGE LEGAL
Built different. For a reason.
Privacy-Preserving by Design
Client data never leaves your environment in readable form. Our anonymisation engine operates entirely within your infrastructure before anything touches the cloud.
One Standardised Workflow
Replace scattered personal tools with one governed platform. Every lawyer in the firm uses the same secure, auditable process.
Built for Real Deployment
Designed for enterprise legal environments. Integrates with your existing document management systems, identity providers and practice management tools.
The only platform where your client data never leaves your walls in readable form.
Enterprise-grade pricing. Without the complexity.
Professional Edition
S$35 per user per month
Best for individuals and smaller teams
- Secure cloud deployment
- Full AI toolkit
- Priority support
- Easy onboarding
PRICING
Pricing can vary based on deployment and firm needs.
Roadmap
Q1 2026
Q2 2026
Q3 2026
Q4 2026
Q1 2027
Functioning MVP
Polished prototype with full masking + AI tools working
Pilot onboarding (5 small–mid law firms), feedback + iteration
First 3 paying clients, marketing push, product development continues
3-5 paying clients, scale readiness
Waitlist benefits
Ideal for
- Free 1-month pilot for selected firms
- Founder-led onboarding and setup support
- Early access to new features and workflows
- Direct influence on the product roadmap
- Optional “pilot outcome summary” for internal stakeholders
- Singapore law firms exploring AI adoption (or already experimenting)
- Partners / Practice Heads / Ops / IT / KM leaders
- Teams that want to test AI in real workflows (not just demos)
How the waitlist works
Submit your interest (60 seconds)
Join the Gatekeeper OS Pilot Waitlist (Singapore)
We’re inviting a small number of Singapore law firms to join the Gatekeeper OS Pilot Waitlist. Waitlist firms get priority access and a free 1-month pilot once your slot opens.
Pilot starts with onboarding + check-ins + wrap-up summary
Slots are limited each month to ensure high-quality onboarding and support.
Note: Waitlist ≠ automatic acceptance. Pilot slots are allocated based on fit and readiness.
We review fit and confirm a slot
We’re building the standard AI layer for legal teams.
Built in Singapore, designed for real legal workflows
Focused on practical adoption and measurable productivity
Starting with a beachhead market, expanding regionally over time