How to Use the Legal Reasoning Prover MCP in Claude Code

Use Claude Code to audit legal arguments. Ensure every brief passes IRAC validation before it hits your CI pipeline.

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Connect Legal Reasoning Prover MCP to Claude Code

Create your Vinkius account to connect Legal Reasoning Prover to Claude Code and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup Legal Reasoning Prover with Claude Code

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Headless IRAC validation for Claude Code

Integrate the `validate_legal_reasoning` tool directly into your terminal workflows. Claude Code can now verify legal logic as part of a script or automated pipeline. It catches broken syllogisms before you commit a document. You receive immediate feedback if your argument lacks a clear rule or analysis.

Automated Bluebook citation checks

Pipe your legal text through the tool to confirm citation accuracy. Claude Code runs the validation and logs any formatting errors to your terminal. It ensures every case citation is complete. You get a report on missing volumes, pages, or incorrect court identifiers.

Jurisdiction-aware legal reasoning

Don't let your agent cite the wrong law for the wrong state. The `validate_legal_reasoning` tool checks the jurisdiction against your proposed argument. Claude Code uses this to verify the legal foundation. If the law doesn't apply to the court, the tool forces a revision.

Setup guide

Set up Legal Reasoning Prover MCP in Claude Code

Prerequisites

Claude Code CLI installed (npm install -g @anthropic-ai/claude-code)
Active Vinkius subscription with a valid endpoint token

1

Run the add command

Open your terminal and run the command shown on the right. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com. Use --scope user to make it available across all projects.
2

Verify the connection

Start a Claude Code session and type /mcp to list connected servers. You should see legal-reasoning-prover-mcp with a green status indicator.
3

Start using tools

Ask Claude Code something like "Check my latest Legal Reasoning Prover transactions." It will automatically discover and invoke the available Legal Reasoning Prover tools.

Terminal

claude mcp add --transport http legal-reasoning-prover-mcp https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

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Prerequisites

Claude Code CLI installed
Active Vinkius subscription with a valid endpoint token

1

Open the config file

Create or edit .mcp.json in your project root for project-level scope, or ~/.claude.json for user-level scope.
2

Add the Legal Reasoning Prover MCP

Paste the JSON snippet shown on the right into the mcpServers object. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Restart Claude Code

Start a new Claude Code session. Type /mcp to confirm the server is connected. The tools will be automatically available in your conversation.

.mcp.json

{
  "mcpServers": {
    "legal-reasoning-prover-mcp": {
      "type": "url",
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Legal Reasoning Prover. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about Legal Reasoning Prover MCP in Claude Code

Use the command line to add the server via the MCP transport flag. Once added, you can pipe your arguments directly to the tool.

It serves as an automated gatekeeper. You can trigger it from your shell to verify that your drafted motion meets all procedural requirements.

It provides structured, parseable feedback. You can use the output to break your build or alert you to missing counter-arguments.

The tool forces the agent to identify adverse cases. It ensures you aren't ignoring opposing precedents during your automated drafting process.

The server runs in a secure, ephemeral V8 isolate. Your legal text is processed in memory and wiped immediately, keeping your research confidential.

Use it with your favorite AI tools

Connect this server to Cursor, Claude, VS Code, and more.

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