jedt3d/lazfpc-mcp

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Repository Install

The MCP for Lazarus IDE and Free Pascal Compiler and it wrap an LSP with it too. (Pascal Language Server)

개요

An MCP (Model Context Protocol) server for Lazarus and Free Pascal development. Provides AI coding agents (Claude, Cursor, OpenCode, etc.) with structured access to Lazarus build tools, form analysis, project metadata, and testing workflows. Built with the official FPC MCP framework and written entirely in Free Pascal. AI coding agents are powerful, but they lack native understanding of the Lazarus/Free Pascal ecosystem. This MCP server bridges that gap by exposing Lazarus-specific development workflows as MCP tools that any MCP-compatible client can invoke. The server uses TMCPStdIOApplication from the FPC MCP framework for stdio transport, making it compatible with all major MCP clients. - Free Pascal Compiler 3.2.2+ - Lazarus IDE with mcpbase.lpk package installed - FPC MCP framework (gitlab.com/freepascal.org/mcp) Open the following packages in Lazarus IDE and compile them: - mcp/Src/Base/mcpbase.lpk - Core MCP library - mcp/Src/IDE/mcpdesign.

README

원문 README의 일부입니다. 원문 보기.

lazfpc-mcp

Built with the official FPC MCP framework and written entirely in Free Pascal.

Why This Exists

AI coding agents are powerful, but they lack native understanding of the Lazarus/Free Pascal ecosystem. This MCP server bridges that gap by exposing Lazarus-specific development workflows as MCP tools that any MCP-compatible client can invoke.

Architecture

                    AI Coding Agent
                   (Claude, Cursor, etc.)
                          |
                   MCP Protocol
                  (JSON-RPC 2.0 / stdio)
                          |
                   lazfpc-mcp
                  (Free Pascal binary)
                          |
          +---------------+---------------+
          |               |               |
     lazbuild/fpc    LfmParser      .lpi XML Parse
     (build tools)  (form analysis)  (project metadata)

The server uses TMCPStdIOApplication from the FPC MCP framework for stdio transport, making it compatible with all major MCP clients.

Tools

Phase 1 - Core

Tool	Description	Input	Output
`build_project`	Build a Lazarus .lpi project using lazbuild	`project_path`, `target_os`?, `target_cpu`?	success, output, errors[]
`parse_lfm`	Parse a .lfm form file and return component tree	`lfm_path`, `max_depth`?	component tree JSON

Phase 2 - Analysis & Testing

Tool	Description	Input	Output
`parse_lpi`	Parse .lpi project file metadata	`lpi_path`	units[], dependencies[], options
`run_fpcunit_tests`	Build and run FPCUnit test project	`test_project_path`, `suite_filter`?	pass/fail per test

Phase 3 - Discovery

Tool	Description	Input	Output
`search_fpc_help`	Search FPC RTL/FCL documentation	`query`, `max_results`?	docs with snippets
`list_projects`	Scan directories for .lpi/.lpr files	`directory_path`, `recursive`?	project list

Prerequisites

Free Pascal Compiler 3.2.2+
Lazarus IDE with mcpbase.lpk package installed
FPC MCP framework (gitlab.com/freepascal.org/mcp)

Setup

1. Clone the FPC MCP Framework

cd /path/to/your/lazarus/workspace
git clone https://gitlab.com/freepascal.org/mcp.git

2. Install MCP Packages in Lazarus

Open the following packages in Lazarus IDE and compile them:

mcp/Src/Base/mcpbase.lpk - Core MCP library
mcp/Src/IDE/mcpdesign.lpk - Design-time components (optional)

3. Build lazfpc-mcp

FPC_VER=$(/path/to/fpc/bin/fpc -iV)

GitHub에서 전체 README 보기

설치

This server does not publish a one-line install command.

Open the repository installation guide MCP 초보자라면? mcpskill.org 가이드부터 시작하세요 →

설정

{
  "mcpServers": {
    "lazarus-dev": {
      "command": "/path/to/lazfpc-mcp/lazfpc-mcp",
      "args": []
    }
  }
}