Open API
Transaction Science

The law is the code.
Juris runs it.

Turn the entire global legal corpus into a programmable operating system. Jurisdiction-aware. Citation-provenant. Temporally precise. Every assertion traces to statute.

14
Crates
130+
Tests
50+
Endpoints
100+
Jurisdictions
6
Legal Traditions
3
Corpus Parsers

State of the art. Every category.

Not a legal tool for lawyers. The infrastructure layer that makes law machine-readable across every jurisdiction.

Temporal Legal Graph

What was the law on any date? Walk amendment chains and effective dates to reconstruct the legal state at any point in time.

🔗

Citation Provenance

Every search result, every memo assertion, every analysis traces to a specific statutory provision. No hallucination. No approximation.

Treatment Analysis

Shepard's / KeyCite equivalent computed from the citation graph. Know if an authority is still good law before you cite it.

🌎

Conflict-of-Law Resolution

12 subject matters, 10 connecting factors. Resolve which jurisdiction's law governs any cross-border dispute, automatically.

📄

Contract Lifecycle

Draft from jurisdiction-aware templates with variable substitution. Review with clause-level risk scoring. Every clause traces to statute.

🔍

Full-Text Search

Tantivy-powered search across the entire ingested corpus. Results enriched with treatment signals and citation provenance.

📋

Research Memos

Generate research memoranda where every paragraph is backed by cited provisions with quoted text. Provenance-guaranteed output.

🔭

Compliance Scanning

Detect obligations, filing requirements, consent mandates, and breach notification duties from statutory text patterns.

🔒

Privilege Detection

Identify attorney-client privilege and work product protection with confidence scoring. Flag documents that need human review.

📅

Deadline Computation

Calendar, business, and court day counting. US federal holidays. 12 FRCP rules. Generate full litigation calendars from trigger events.

📝

Court Filing Templates

45 document templates across trial, appellate, and supreme court levels. Court-aware formatting: fonts, line numbers, required sections.

📊

Corpus Analytics

Dashboard over the knowledge graph. Citation metrics, jurisdiction coverage, treatment distribution. Understand the shape of the law.

14 crates. One legal engine.

Each crate is a self-contained domain with clean boundaries. Compose them into any legal application.

Foundation

legalos-core

Domain types: documents, provisions, citations, jurisdictions, treatments

🖨

legalos-corpus

USLM, EUR-Lex, Akoma Ntoso parsers. Citation extraction. Text normalization.

🕐

legalos-graph

Knowledge graph with temporal queries. Citation edges. Treatment computation.

🌐

legalos-jurisdiction

100+ jurisdictions. Hierarchy resolution. Conflict-of-law analysis.

Library & Search
📚

legalos-library

Storage, Tantivy indexing, document versioning with amendment chains.

🔎

legalos-research

Provenance-backed research memos. Comparative jurisdiction analysis.

Application
📄

legalos-contracts

Clause analysis, risk scoring, template drafting with variable substitution.

🔭

legalos-compliance

Obligation detection from statutory language patterns.

🔒

legalos-discovery

Privilege detection: attorney-client, work product, with confidence scoring.

📅

legalos-practice

Deadline computation. FRCP rules. Litigation calendar generation.

📝

legalos-filing

Court document templates. Regulatory filing deadlines. Format specs.

Infrastructure
🔌

legalos-api

Axum REST API. 11 route groups. 40+ integration tests. JSON responses.

🎛

legalos-wasm

WebAssembly target for client-side legal computation.

Built for every scale of legal work.

From solo practitioners to sovereign nations.

👤

Solo Practice

Free
  • Full-text search
  • Research memos
  • Deadline computation
  • Filing templates
  • Contract review
Get Started
🏢

Firm

Usage-based
  • Everything in Solo
  • Privilege detection
  • Compliance scanning
  • Contract drafting
  • Multi-jurisdiction
Contact
🏛

Enterprise

Custom
  • Everything in Firm
  • API access
  • Corpus analytics
  • Comparative analysis
  • On-premise deploy
Talk to Us
🏗

Nation

Sovereign partnership
  • Full corpus ingestion
  • Custom parsers
  • National legal graph
  • Treaty integration
  • Citizen access layer
Discuss

Jurisdiction coverage.

Six legal traditions. Every governance level. 100+ jurisdictions pre-loaded.

Common Law Civil Law Sharia Mixed Customary Socialist
USLM (US Code) EUR-Lex (Formex) Akoma Ntoso (OASIS AKN 3.0) FRCP Deadlines 11 Citation Patterns 12 Subject Matters 10 Connecting Factors

“Law is not a mystery. It is a system. Juris makes it machine-readable.”

— The thesis behind Juris

Start your legal engine.

Every provision. Every jurisdiction. Every date. Trace every assertion to statute.