The gist

fireworks-tech-graph is an open-source tool that automatically generates technical diagrams from natural language descriptions. It's designed for developers and architects who need to create polished visuals for system designs, AI agent workflows, or cloud infrastructure. Instead of manual drawing, users describe their system in text to receive publication-ready SVG and PNG files, solving the tedious process of creating and updating diagrams by hand.

What it does

Generates SVG and high-resolution PNG technical diagrams from natural language prompts.
Supports 14 standard UML diagram types and specialized AI/Agent patterns like RAG and Multi-Agent flows.
Offers seven built-in visual styles, including dark terminal, blueprint, and brand-specific themes for Claude and OpenAI.
Utilizes a semantic vocabulary of shapes and arrows to create consistent, meaningful diagrams.
Incorporates over 40 pre-built product icons for services like AWS, Pinecone, and Kafka.

How it works

As a command-line tool installed via npx or Git, fireworks-tech-graph takes a natural language prompt as input. The user describes the desired architecture or flowchart and can specify a visual style. The tool processes the prompt and outputs a vector SVG file for editing and a high-resolution 1920px PNG for embedding. The project is open-source under an MIT license and is free to use.

Best for

Developers, system architects, and technical writers who need to quickly produce high-quality diagrams for documentation, presentations, or README files without using a manual GUI editor.

Watch out for

The quality of the final PNG export depends heavily on the chosen renderer. The recommended cairosvg library offers the best support, while other options may fail to render certain CSS styles correctly, resulting in visual glitches.