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us-legal-mcp

us-legal-mcp

by jurisatlas
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Remote

United States Legal Research MCP Server (us-legal-mcp)

Model Context Protocol (MCP) server providing direct, read-only access to United States (US) legislation, multi-tier judicial decisions (First Instance, Regional/Cantonal/Appellate, and Supreme/Constitutional courts), and statutory citation verification for Claude Desktop, Cursor, and Antigravity.

Quick Desktop Setup (No Command Line Required)

This package includes a graphical installer for legal practitioners who prefer not to use terminal commands or edit JSON configuration files manually.

  1. Download: Click <> Code at the top right of this repository, select Download ZIP, and extract the folder to your computer.

  2. Run the Setup Utility:

    • Windows: Double-click Click_Here_To_Install_Windows.bat

    • macOS: Double-click Click_Here_To_Install_Mac.command

  3. Connect: Click Install & Connect Automatically in the setup window and restart Claude Desktop.

System Integrity Note: The setup utility operates strictly in read-only mode with respect to your personal files and documents. It installs an isolated Python environment inside the extracted folder and registers the server entry in your AI client configuration.

Related MCP server: Iceland Legal Research MCP Server

Multi-Tier Judicial Hierarchy & Official Sources

This server indexes and queries decisions across the full judicial hierarchy of United States, allowing practitioners to filter research by procedural stage:

Judicial Tier

Covered Courts & Tribunals

Tier 1 — First Instance

94 U.S. Federal District Courts, U.S. Bankruptcy Courts, U.S. Court of International Trade & State Trial/Superior Courts

Tier 2 — Regional / Cantonal / Appellate

13 U.S. Circuit Courts of Appeals (1st–11th, D.C., Federal Circuit) & 50 State Intermediate Appellate Courts

Tier 3 — Supreme & Constitutional

Supreme Court of the United States (SCOTUS) & 50 State Supreme Courts / Courts of Last Resort

Primary Legal Portals

  • National Legislation Registry: Electronic Code of Federal Regulations (eCFR API) & US Code (https://www.ecfr.gov/api/search/v1/results)

  • Multi-Tier Case Law Database: CourtListener / Free Law Project Multi-Tier Federal & State Database (courtlistener.com) (https://www.courtlistener.com/api/rest/v4/search/)

  • Supported Citation Format Example: 410 U.S. 113 or 21 C.F.R. § 314.50

Indexed Court & Regional Sub-Portals

Sub-Portal Identifier (sub_court)

Official Endpoint / Registry

scotus

https://www.courtlistener.com/?court=scotus

federal_circuits

https://www.courtlistener.com/?court=ca1+ca2+ca3+ca4+ca5+ca6+ca7+ca8+ca9+ca10+ca11+cadc+cafc

federal_districts

https://www.courtlistener.com/

Available MCP Tools

Tool

Description

search_legislation

Searches enacted statutes, codes, decrees, and official gazette publications in United States.

search_case_law

Searches national jurisprudence and European/ECLI-linked judgments for United States.

search_tiered_court_decisions

Filters case law specifically by judicial instance (first_instance, appellate_regional, supreme_constitutional) or regional/cantonal court key (sub_court).

list_court_hierarchy

Returns the complete 3-tier court structure and registered sub-portal endpoints for United States.

get_legal_document_markdown

Retrieves full statutory or judicial texts and converts them into clean Markdown.

verify_citation

Validates statutory and case law citations against official registries.

{
  "mcpServers": {
    "us-legal-mcp": {
      "command": "uvx",
      "args": [
        "--from",
        "git+https://github.com/jurisatlas/us-legal-mcp",
        "us-legal-mcp"
      ]
    }
  }
}

This server cannot be deployed

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Maintenance

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Resources

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