APiGen MCP Server (Python)

MCP (Model Context Protocol) server for APiGen - enables AI assistants like Claude to generate API code directly from conversations.

Features

• Generate Projects: Create complete API projects from SQL schemas or OpenAPI specs
• Preview Code: See generated code before writing files
• Validate Schemas: Check configuration and schema files for errors
• Add Entities/Fields: Incrementally build your data model
• Create Migrations: Generate database migration files

Installation

Prerequisites

1. Python 3.10+
2. APiGen CLI - Build the CLI JAR
3. Java 25+ - Required to run the CLI

Install MCP Server

pip install apigen-mcp

Configuration

Claude Desktop

Add to your Claude Desktop config:

{
  "mcpServers": {
    "apigen": {
      "command": "apigen-mcp",
      "args": [
        "--cli-path", "/path/to/apigen-cli.jar",
        "--working-dir", "/path/to/your/project"
      ]
    }
  }
}

Available Tools

Tool	Description
generate_project	Generate complete API from schema file
generate_from_sql	Generate API from SQL content in conversation
preview_code	Preview generated code without writing files
preview_sql	Preview code from SQL content
validate_schema	Validate project configuration
init_project	Initialize new APiGen project
add_entity	Add entity with fields and relations
add_field	Add field to existing entity
create_migration	Generate database migrations
list_languages	List supported languages
list_databases	List supported databases
get_help	Get CLI help

Usage Examples

Generate from SQL in Conversation

User: Generate a Java Spring API for this schema:

CREATE TABLE products (
    id BIGINT PRIMARY KEY,
    name VARCHAR(200) NOT NULL,
    price DECIMAL(10,2)
);

Claude: [Uses generate_from_sql tool with the SQL content]

Preview Before Generating

User: Show me what code would be generated for products table

Claude: [Uses preview_sql tool to show Entity, Repository, Service, Controller]