d2

A program that lets you mod Diablo II from a config

Isometric architecture diagrams as code — text DSL in, design-grade 2.5D SVG out. Agent-first: LLMs can discover, generate, and validate the DSL.

A Model Context Protocol (MCP) server that provides D2 diagram generation and manipulation capabilities.

Goldmark extension for D2 diagrams

An open-source service to generate image URLs for diagrams based on the provided D2 code. 99.99% Uptime

A Telegram Bot which replies to messages with D2-generated .svg files in .png format.

System-architecture documentation and diagrams from AsyncAPI specifications

A compile-time blog with SSR via HTMX

ERD diagrams from live database instances

Replaces d2 code in markdown into image links to its rendered versions

A Go server that turns markdown files into a navigable website with search, diagrams, live reload, and S3/GCS support

Create a D2 ERD Diagram from your existing postgres schema (golang port)

C4 architecture documentation tool with LLM integration via MCP — design systems conversationally, render D2 diagrams, generate beautiful docs

jsonschema-transform is a CLI utility that can transform JSON Schema into D2. This can be useful to visualize a large set of JSON Schema's that are interconnected (and possibly have remote references)

Declarative architecture diagrams in KDL — SVG, PNG, PDF, HTML, and slide decks. Built for humans and AI agents.

Write your data once. Render it anywhere. 16 output formats across tables, trees, and diagrams, plus NOM-style real-time progress visualization. Zero heavy deps in root.

Opinionated lightweight diagram renderer

AWSの構成をチャットで相談しながら決め、数式入りのコスト見積もりExcelと構成図を出力するエージェント（Genkit Go）

D2 is a modern diagram scripting language that turns text to diagrams.

Keeps architecture diagrams honest — binds D2 diagram nodes to real repo paths and fails CI when they diverge