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Use OpenLaws with your AI.

Connect your account once and let the AI you already use work with it, without building another integration. Access validated legal data via OpenLaws. search statutes, regulations, case law, validate citations, and track legislative changes directly from any AI agent.

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Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

ChatGPTClaudeCursorPerplexityGeminiMicrosoft CopilotRaycastMeta AI

Complete set · 14 capabilities

The complete OpenLaws capability set.

These are the exact actions your AI can choose when you ask it to work with OpenLaws.

Capability set01 / 04

01-04

4 capabilities in this set.

Part of 14 available through OpenLaws.

  1. 01

    Get regulation

    Use this to get the complete regulation content after finding it via search_regulations. The response includes rich text content, citations, and regulatory context. Get a specific regulation by its ID

  2. 02

    Get caselaw opinion

    Use this to get the complete court opinion after finding it via search_caselaw. The response includes the full opinion text, court details, date, citations, and parties involved. Get a specific case law opinion by its ID

  3. 03

    Get constitution

    Use this to get the complete provision content after finding it via search_constitutions. The response includes rich text content, article/section information, and amendments history. Get a specific constitution provision by its ID

  4. 04

    Get jurisdiction

    Use the jurisdiction_id from list_jurisdictions to inspect details before scoping searches. Get details of a specific jurisdiction

Capability set02 / 04

05-08

4 capabilities in this set.

Part of 14 available through OpenLaws.

  1. 05

    Get redline comparison

    This shows exactly what changed between legislative sessions or amendment cycles. Currently available for federal laws only (USC). Optionally specify from and to version dates. If not specified, compares the two most recent versions. Use this to understand legislative changes and their impact on compliance requirements. Get redline comparison between two versions of a federal statute

  2. 06

    Get statute

    Use this to get the complete statute content after finding it via search_statutes. The response includes rich text content, citations, effective dates, and annotations. Get a specific statute by its ID

  3. 07

    Get statute history

    This allows you to see how the law has changed over time. Currently available for federal laws only (USC - United States Code). Use the statute_id from search_statutes to view the legislative history and amendments. Get historical versions of a federal statute

  4. 08

    Search caselaw

    Data sourced from Harvard CAP project and CourtListener (~5-6 million cases). You can filter by jurisdiction, specific court, or federal circuit. The query parameter is required. Optionally filter by jurisdiction_id and court name. Results include case opinions, court information, dates, and citations. Example: search for " Fourth Amendment privacy" or "breach of contract" cases. Search case law opinions by keyword

Capability set03 / 04

09-11

3 capabilities in this set.

Part of 14 available through OpenLaws.

  1. 09

    Search regulations

    You can search all jurisdictions simultaneously or scope to a specific region. The query parameter is required and contains the search term. Optionally filter by jurisdiction ID. Results include regulation text, citations, and contextual information. Example: search for "environmental protection" or "workplace safety" regulations. Search regulations by keyword across jurisdictions

  2. 10

    Search statutes

    You can search all 50 states simultaneously for 50-state surveys, or scope to a specific jurisdiction. The query parameter is required and contains the search term. Optionally filter by jurisdiction ID. Results include statute text, citations, effective dates, and jurisdiction information. Example: search for "data privacy" across all jurisdictions, or "employment" in California only. Search statutes by keyword across jurisdictions

  3. 11

    Validate citation

    This capability helps identify malformed citations and find the authoritative source document. Supports citations from all 50 states, DC, Puerto Rico, and federal sources. The citation parameter should be a standard legal citation format (e.g., "42 U.S.C. § 1983", "Brown v. Board of Education, 347 U.S. 483"). Use this to validate citations in legal documents, spreadsheets, or databases before relying on them. Validate a legal citation and find its original source

Capability set04 / 04

12-14

3 capabilities in this set.

Part of 14 available through OpenLaws.

  1. 12

    Get recent updates

    You can view updates across all jurisdictions or filter to a specific state/federal level. This is useful for compliance monitoring and staying current with legislative changes. Optionally specify jurisdiction ID and limit the number of results. Example: check what changed in California employment law this month, or monitor federal regulatory updates. Get recent legal updates across jurisdictions or in a specific jurisdiction

  2. 13

    List jurisdictions

    Jurisdictions include federal (US), all 50 states, District of Columbia, and Puerto Rico. Each jurisdiction has an ID that can be used to scope searches to specific regions. Use this to discover what jurisdictions are available before searching statutes, regulations, or caselaw. List all available legal jurisdictions in OpenLaws

  3. 14

    Search constitutions

    You can search the US Constitution and all 50 state constitutions simultaneously. The query parameter is required. Optionally filter by jurisdiction ID. Results include constitutional provisions, amendments, and relevant sections. Example: search for "free speech" or "right to privacy" across all constitutions. Search constitutions by keyword across jurisdictions

Observed, not estimated

877ms average. Fast in production.

OpenLaws is checked daily against the live service.

Daily averagePeak 1098ms
Aug 22Today
Fastest day
772ms
Slowest day
1098ms
14-day trend
Improving-6%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 14 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of OpenLaws, so you can see the experience inside your AI.

It does not authenticate your account with OpenLaws. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

OpenLaws Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_9lJiAbUmMMfe0J30gi6K1hWuX9NA2fO2s1RmCda0/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — OpenLaws capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "openlaws-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_9lJiAbUmMMfe0J30gi6K1hWuX9NA2fO2s1RmCda0/mcp"
    }
  }
}
  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Step-by-step instructions for each client are in the guide. How to connect

FAQ

Questions OpenLaws owners ask.

  • 01

    How do I get an OpenLaws API key and what authentication method is used?

    Visit openlaws.us/api and click Get API Access to register. Once approved, you'll receive a Bearer token. Include it in the Authorization header as Authorization: Bearer YOUR_TOKEN. The API uses standard Bearer token authentication for all v1 endpoints at https://api.openlaws.us/api/v1/.

  • 02

    Can I search statutes across all 50 states simultaneously?

    Yes! Use the search_statutes capability without specifying a jurisdiction parameter to search all 53 jurisdictions (50 states + DC + Puerto Rico + federal) at once. This is perfect for 50-state surveys. Alternatively, scope your search to a specific jurisdiction by providing its ID (e.g., 'ca' for California, 'ny' for New York, 'us' for federal).

  • 03

    How does citation validation work and what formats are supported?

    Use the validate_citation capability with any standard legal citation format. The API will identify the original government source, validate the citation accuracy, and flag malformed citations. It supports Bluebook format (e.g., '42 U.S.C. § 1983', '347 U.S. 483 (Brown v. Board)'), state citations for all 50 states, DC, and Puerto Rico. This is ideal for validating citations in legal documents, spreadsheets, and databases.

  • 04

    What legal data sources does OpenLaws cover?

    OpenLaws covers ~4.3 million tracked sections across 53 jurisdictions with 100% federal statutes and regulations coverage. Data includes: United States Code (USC), Code of Federal Regulations (CFR), all 50 state statutes and regulations, DC and Puerto Rico laws, ~5-6 million case opinions (from Harvard CAP and CourtListener), US Constitution and all 50 state constitutions, and legislative history for federal laws.

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