LexAPI

by Lex-API

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About

Query EUR-Lex and EU case law from Claude, Cursor, and other MCP-enabled tools. 10 tools for structured search, CELEX/URL document fetch, recent Official Journal, citation graph, and semantic search over case law + legislation.

Details

Author: Lex-API
Downloads: 393
Categories: Other

- Structured EUR-Lex search by text, dates, type, author, language
- Full parsed document retrieval by CELEX number
- Metadata-only fetch (faster than full content)
- Fetch documents by EUR-Lex URL
- Recent Official Journal publications (default 7 days)
- Inbound and outbound citation graphs with typed edges
- Semantic embedding search over EU case law and legislation

Setting up with Highlight

This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:

Download and install Highlight from highlightai.com/download
Navigate to the plugins tab and select "Add Custom Plugin"
Configure the plugin with the settings below

Plugin Name LexAPI

Command (node, npx, python, etc.)

Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
Enable "Start Automatically" if you want the plugin to start when Highlight launches

Setting up with Cursor

Open Cursor's settings
Navigate to the MCP section
Click "Add new Global MCP server"
Copy and paste the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "lexapi": {
            "lexapi": {
                "command": "npx",
                "args": [
                    "-y",
                    "@lexapi/mcp"
                ],
                "env": {
                    "LEXAPI_API_KEY": "<YOUR_LEXAPI_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "lexapi": {
            "lexapi": {
                "command": "npx",
                "args": [
                    "-y",
                    "@lexapi/mcp"
                ],
                "env": {
                    "LEXAPI_API_KEY": "<YOUR_LEXAPI_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "lexapi": {
            "lexapi": {
                "command": "npx",
                "args": [
                    "-y",
                    "@lexapi/mcp"
                ],
                "env": {
                    "LEXAPI_API_KEY": "<YOUR_LEXAPI_API_KEY>"
                }
            }
        }
    }
}

Setting up with Claude Desktop

Open Claude Desktop's settings
Go to the Integrations tab
Click "Add MCP Server"
Use the configuration below based on your operating system

Note: Make sure Claude Desktop is running before attempting to connect.

JSON

{
    "mcpServers": {
        "lexapi": {
            "lexapi": {
                "command": "npx",
                "args": [
                    "-y",
                    "@lexapi/mcp"
                ],
                "env": {
                    "LEXAPI_API_KEY": "<YOUR_LEXAPI_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "lexapi": {
            "lexapi": {
                "command": "npx",
                "args": [
                    "-y",
                    "@lexapi/mcp"
                ],
                "env": {
                    "LEXAPI_API_KEY": "<YOUR_LEXAPI_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "lexapi": {
            "lexapi": {
                "command": "npx",
                "args": [
                    "-y",
                    "@lexapi/mcp"
                ],
                "env": {
                    "LEXAPI_API_KEY": "<YOUR_LEXAPI_API_KEY>"
                }
            }
        }
    }
}

Setting up with Windsurf

Open Windsurf's preferences
Go to the Integrations section
Click "Add MCP Integration"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "lexapi": {
            "lexapi": {
                "command": "npx",
                "args": [
                    "-y",
                    "@lexapi/mcp"
                ],
                "env": {
                    "LEXAPI_API_KEY": "<YOUR_LEXAPI_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "lexapi": {
            "lexapi": {
                "command": "npx",
                "args": [
                    "-y",
                    "@lexapi/mcp"
                ],
                "env": {
                    "LEXAPI_API_KEY": "<YOUR_LEXAPI_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "lexapi": {
            "lexapi": {
                "command": "npx",
                "args": [
                    "-y",
                    "@lexapi/mcp"
                ],
                "env": {
                    "LEXAPI_API_KEY": "<YOUR_LEXAPI_API_KEY>"
                }
            }
        }
    }
}

Setting up with Cline

Open Cline's settings
Navigate to the Integrations section
Click "Add MCP Server"
Copy and paste the configuration below based on your operating system

Note: Make sure to restart Cline after adding the configuration.

JSON

{
    "mcpServers": {
        "lexapi": {
            "lexapi": {
                "command": "npx",
                "args": [
                    "-y",
                    "@lexapi/mcp"
                ],
                "env": {
                    "LEXAPI_API_KEY": "<YOUR_LEXAPI_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "lexapi": {
            "lexapi": {
                "command": "npx",
                "args": [
                    "-y",
                    "@lexapi/mcp"
                ],
                "env": {
                    "LEXAPI_API_KEY": "<YOUR_LEXAPI_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "lexapi": {
            "lexapi": {
                "command": "npx",
                "args": [
                    "-y",
                    "@lexapi/mcp"
                ],
                "env": {
                    "LEXAPI_API_KEY": "<YOUR_LEXAPI_API_KEY>"
                }
            }
        }
    }
}

Setting up with Goose

Open Goose's preferences
Go to the Integrations tab
Select "MCP Servers"
Click "Add New Server"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "lexapi": {
            "lexapi": {
                "command": "npx",
                "args": [
                    "-y",
                    "@lexapi/mcp"
                ],
                "env": {
                    "LEXAPI_API_KEY": "<YOUR_LEXAPI_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "lexapi": {
            "lexapi": {
                "command": "npx",
                "args": [
                    "-y",
                    "@lexapi/mcp"
                ],
                "env": {
                    "LEXAPI_API_KEY": "<YOUR_LEXAPI_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "lexapi": {
            "lexapi": {
                "command": "npx",
                "args": [
                    "-y",
                    "@lexapi/mcp"
                ],
                "env": {
                    "LEXAPI_API_KEY": "<YOUR_LEXAPI_API_KEY>"
                }
            }
        }
    }
}

From the repository

Install via npm (npx -y @lexapi/mcp), set the LEXAPI_API_KEY environment variable (get a free key at lex-api.com/dashboard), and configure the server in your MCP client (e.g., Claude Desktop, Claude Code, or Cursor). The server exposes ten tools for searching, fetching, and exploring EU legal documents and citations.

Claude Desktop / Cursor

Paste into your MCP client config file to install this server.

{
    "mcpServers": {
        "lexapi": {
            "lexapi": {
                "command": "npx",
                "args": [
                    "-y",
                    "@lexapi/mcp"
                ],
                "env": {
                    "LEXAPI_API_KEY": "<YOUR_LEXAPI_API_KEY>"
                }
            }
        }
    }
}

McpServers

{
    "lexapi": {
        "command": "npx",
        "args": [
            "-y",
            "@lexapi/mcp"
        ],
        "env": {
            "LEXAPI_API_KEY": "<YOUR_LEXAPI_API_KEY>"
        }
    }
}

LexAPI MCP

Model Context Protocol server for LexAPI — query EUR-Lex, EU case law, and the citation graph from Claude, Cursor, and other MCP-enabled AI tools. Ask your assistant: "summarize Article 17 of the GDPR" or "which regulations amend Directive 95/46/EC?" and the model calls LexAPI directly.

Tools

| Tool | What it does | |---|---| | lex_search | Structured EUR-Lex search (text, dates, document type, author, language). | | lex_get_document | Full parsed document by CELEX — metadata + articles, sections, tables, annexes. | | lex_get_metadata | Metadata only (faster than full content). | | lex_get_document_by_url | Fetch by EUR-Lex URL (pasted from a browser). | | lex_recent_documents | Recent Official Journal publications (default 7 days). | | lex_cited_by | Documents citing this CELEX (inbound, typed edges). | | lex_cites | Documents this CELEX cites (outbound, typed edges). | | lex_citation_network | Both directions in one call. | | lex_semantic_case_law | Embedding search over EU case law (paid plans). | | lex_semantic_legislation | Embedding search over EU legislation. |

Install

Get a LexAPI API key at lex-api.com/dashboard (50 calls/day on the FREE tier; semantic tools require a paid plan).

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json: ``

json
{
  "mcpServers": {
    "lexapi": {
      "command": "npx",
      "args": ["-y", "@lexapi/mcp"],
      "env": { "LEXAPI_API_KEY": "lex_..." }
    }
  }
}



Claude Code

bash
claude mcp add lexapi --env LEXAPI_API_KEY=lex_... -- npx -y @lexapi/mcp



Cursor / other MCP clients


Any client that supports stdio MCP servers can run

npx -y @lexapi/mcp with LEXAPI_API_KEY

 in the environment.

Configuration


| Env var | Default | Purpose |
|---|---|---|
|

LEXAPI_API_KEY

 | (required) | Your API key. Get one at lex-api.com/dashboard. |
|

LEXAPI_BASE_URL | https://lex-api.com/api/v1

 | Override for self-hosted or staging. |

Links


- npm: https://www.npmjs.com/package/@lexapi/mcp
- Source: https://github.com/Lex-API/lexapi-mcp
- Official MCP Registry:

io.github.Lex-API/lexapi-mcp` - Get an API key: https://lex-api.com/dashboard MIT licensed.

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Details

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Setting up with Highlight

From the repository

Claude Desktop / Cursor

McpServers

LexAPI MCP

Tools

Install

Claude Desktop

Claude Code

Cursor / other MCP clients

Configuration

Links

Install

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