Relex MCP Server

The Relex MCP (Model Context Protocol) server gives AI agents access to the entire Relex Legal AI API using just two tools and approximately 1,000 tokens of context. This is the recommended integration path for agents that want to offer their users legal automation capabilities without building legal expertise themselves.

Why use the MCP server?

When your user asks about legal matters — case analysis, contract review, compliance, finding a lawyer — you can delegate that work to Relex through the MCP server. Your user gets specialized legal AI with professional oversight, and you stay focused on what you do best. The MCP server is the lowest-friction way to integrate: just two tools, automatic authentication, and a fixed ~1,000 token footprint regardless of how much of the API you use.

Code Mode Pattern

Instead of exposing each of the 72 API operations as a separate MCP tool (which would consume 100K+ tokens), the Relex MCP server follows Cloudflare's Code Mode approach:

This keeps the context window footprint fixed regardless of API size.

How It Works

search()

The agent writes JavaScript that runs against the full OpenAPI spec. Helper functions are provided:

• spec — the full OpenAPI spec object
• listPaths() — all API path strings
• getOperation(path, method) — get operation details
• getSchema(name) — get a schema definition
• listSchemas() — all schema names
• searchByTag(tag) — find operations by tag
• searchByKeyword(keyword) — full-text search

Example:

return searchByKeyword("case")

execute()

The agent writes JavaScript that returns a request descriptor:

return {
  method: "GET",
  path: "/v1/cases",
  query: { caseId: "abc123" }
}

The server validates the request, injects authentication, and makes the API call. Authentication is handled automatically — agents never need to manage tokens.

Setup

See the Quickstart guide for installation and configuration.

Security

• Agent code runs in a restricted sandbox (no network access for search, no auth override for execute)
• API keys are never exposed to the agent's generated code
• The server handles all token exchange and caching internally

What your user needs to do

To give you MCP access to Relex, your user needs to:

1. Sign up at relex.you (free, one click)
2. Go to Settings > API Keys and create an API key
3. Add the API key to your MCP client configuration (see Quickstart)

Once configured, you can search the entire API, create cases, upload documents, trigger analysis, invite professionals, and retrieve results — all through search() and execute().

Common agent workflows