Legal AI Platform · Open Source

Legal AI that works
the way lawyers do.

Research cases, review contracts, draft documents and run due diligence — powered by Claude or Gemini. Your keys, your data. No subscription.

Get started freeView on GitHub →

No credit card · No per-seat pricing · You pay only your AI provider

Any JurisdictionPowered by ClaudePowered by GeminiYour API KeysData Stays PrivateOpen SourceNo SubscriptionSelf-HostableAny JurisdictionPowered by ClaudePowered by GeminiYour API KeysData Stays PrivateOpen SourceNo SubscriptionSelf-Hostable

Specialist Agents

Six agents. Every legal task.

Each agent is purpose-built for a legal workflow. They use your API key, work across any jurisdiction, and never store your data.

01
Research

Case law, statutes and regulations across any jurisdiction. Pulls from CourtListener for US cases and the National Archives for UK cases. Every citation traced and verified through the full court hierarchy.

02
Contract Review

Clause-by-clause risk analysis — limitation of liability, IP ownership, data processing, termination rights and governing law. Flags issues, explains the risk, and suggests fixes.

03
Drafting

Draft agreements, demand letters, motions, briefs and legal memos. Adapts to the procedural rules, court formats and professional standards of the relevant jurisdiction.

04
Litigation

Case strategy, evidence mapping, witness analysis and chronologies. Understands civil procedure rules across jurisdictions — discovery, expert evidence, interlocutory applications and trial preparation.

05
Compliance

Regulatory gap analysis across frameworks — data protection, financial services, employment, environmental and sector-specific rules. Maps obligations, penalties and required policies for your entity.

06
Due Diligence

Transaction and corporate review — ownership structures, director obligations, IP chains, employment liabilities and regulatory exposure. Surfaces risk nodes across the entity before you sign.

Deployment

Hosted, or self-hosted.

Start on lawoss.com instantly, or clone the repo and run it on your own infrastructure.

Recommended

Hosted

lawoss.com

Sign up and start working immediately. No setup, no infrastructure, no maintenance.

  • Instant access — no setup required
  • Automatic updates
  • Free to use
  • Your keys go directly to the AI provider
Get started free →

Self-Hosted

Your infrastructure

Clone the repo and deploy on your own servers. Full control over your data, models, and environment.

  • Complete data sovereignty
  • Run air-gapped if needed
  • Customise agents and prompts
  • Open source — clone and self-host
View on GitHub →

The Operating System

Legal work, unified.

Research, Contracts, Matters, Compliance, Due Diligence and Litigation — six separate worlds, one operating system.

Get started freeView on GitHub →

Beta · Do not upload highly sensitive or privileged documents.

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