Jusratio
Jusratio is a legal intelligence layer that connects AI assistants like Claude and ChatGPT to a database of over 50 million Brazilian court decisions, precedents, and regulations via the Model Context Protocol (MCP). Its proprietary ranking algorithm prioritizes legal authority and recency, enabling lawyers to ground AI-generated responses in verifiable sources with identified references.
- Legal Technology
- Artificial Intelligence
- Software Only
Funding
Founders
Founder details are not available yet.
Product
Problem
Legal professionals using general-purpose AI assistants for legal work face the risk of fabricated citations, non-existent cases, and outdated precedents, as these models generate text based on statistical probability. Verifying every AI-generated legal claim is time-consuming, and citing incorrect or superseded case law damages credibility before a court.
Solution
Jusratio provides a semantic legal search engine that integrates with existing AI assistants through the Model Context Protocol (MCP), allowing tools like Claude and ChatGPT to search over a database of more than 50 million Brazilian court decisions, precedents, and norms. The platform indexes decisions, consolidated federal and state legislation, and administrative precedents, ranking results using a proprietary hybrid algorithm that prioritizes legal authority hierarchy and the currentness of the understanding. When the AI retrieves documents through Jusratio, responses are constructed from real, verifiable sources with identified references for checking, reducing the risk of hallucination. The service signals when coverage is weak rather than filling gaps with invented precedents, giving legal professionals a foundation they can trust.
Target Audience
Primary customers are legal professionals including lawyers, attorneys, legal researchers, and law firms who use AI assistants for legal research, document drafting, and citation checking, as well as legal teams in public agencies needing centralized access management and usage auditing.
Features
- Semantic search that understands plain Portuguese and technical legal terms, matching by meaning rather than just keywords
- Proprietary ranking algorithm that orders results by authority hierarchy (A to E) and recency, placing binding precedents above persuasive decisions
- Coverage of over 50 million decisions from 129 courts and bodies, including all 27 state courts, labor courts, federal courts, and administrative bodies like CARF, TCU, and state audit courts
- Consolidated federal and state legislation searchable article-by-article, with revoked articles flagged, including the tax reform
- Identified sources for every result, including court, rapporteur, date, and link to the full text when available
- Integration with Claude via official connector and ChatGPT via developer mode, plus compatibility with other MCP clients like Harvey
- Business tier with centralized billing, seat management, role-based permissions, and per-user usage auditing for law firms and legal departments