Turn a messy feature brief into a clean architecture diagram in 10 minutes
Beginner
10 min
English
Generate a Mermaid-based architecture diagram from a plain-language feature description so you can share, review, and iterate on system design fast.
Steps
- Open ChatGPT or Claude in your browser (free tier is fine).
- Paste the prompt template below into the chat.
- Replace the {feature_description}, {components}, and {style_notes} variables with your own details.
- Press send and read the generated Mermaid code.
- Copy the Mermaid code and paste it into mermaid.live (free, no signup) to preview the diagram.
- If labels or arrows look off, reply to the chat with one correction, e.g. 'Add a queue between the API and the worker,' and paste the updated code back into mermaid.live.
- Export the final diagram as PNG or SVG from mermaid.live and drop it into your PR, wiki, or slide.
Prompts to Use
You are a senior software architect. Read the feature description and produce a system architecture diagram as valid Mermaid code.
Feature description: {feature_description}
Known components to include: {components}
Style or constraints to respect: {style_notes}
Rules:
- Use a flowchart graph TD layout.
- Group related components with subgraphs labeled by layer (Client, API, Services, Data, External).
- Show data flow with labeled arrows.
- Keep node names short and use clear labels.
- Output ONLY the Mermaid code inside a single code block, no commentary.
Tools Used
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