System Architecture Diagram Maker
Generate system architecture diagrams in seconds. Describe what you need in plain English – or paste in code – and Eraser draws it.
How to generate a system architecture diagram
- Instead of writing from scratch, paste in snippets from docs, README files, Docker Compose, Kubernetes manifests, or Terraform code.
- Use an LLM to stress test your design – ask it to point out missing components, potential bottlenecks, or failure points based on your initial prompt.
- Call out grouping or layout preferences in your prompt: e.g. “Put inference and monitoring services in separate zones.”
- For complex systems, split into multiple diagrams – e.g. training pipeline vs. serving infrastructure.
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Write a prompt describing the system architecture
A one-liner can work, but a clearer diagram usually comes from a 3–5 sentence prompt. Use this approach:
- Start by listing the main components – services, data stores, APIs, ML models, pipelines – and group them into layers (e.g. frontend, backend, data, infrastructure).
- Then describe how these components interact. Explain the runtime flows, such as request handling, background processing, or data movement.
- Mention any deployment context – e.g. containerized services, cloud regions, or availability zones – if relevant to the structure.
- 2
Make a diagram with the completed prompt
Use your AI diagram tool to create the diagram based on your description.
- 3
Refine the diagram with follow-up prompts
(requires signing in to Eraser). For example: “Group all data components into a ‘Data Layer’” or “Add an API Gateway in front of the backend services.”
- 4
Tweak the layout using GUI controls
(requires signing in to Eraser). Adjust spacing, reroute lines, or rename components for clarity.
Generate any type of diagram with AI
Architecture 
Swimlane 
Flowchart 
ERD 
AWS 
Azure 
Terraform 
Kubernetes 
UML Frequently asked questions
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Can I edit the generated system architecture diagram?
Yes. Click “Save and Edit Diagram” to open it in Eraser, where you can edit using diagram-as-code syntax or the visual GUI.
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What can I use as a prompt?
Plain English, a nested list, or a code snippet. You can also paste excerpts from requirements docs, transcripts, or knowledge-base articles.
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Can I use this from an AI agent?
Yes. Eraser runs an MCP server, so any MCP-compatible client – Claude, Cursor, or ChatGPT – can create and edit these diagrams directly. See the MCP catalog for what it exposes.
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Who created this tool?
The system architecture diagram maker was created by the team at Eraser, leveraging frontier AI models. Eraser is an AI tool for technical design and documentation.
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Is it free?
Generating a system architecture diagram is free and requires no sign-up. Sign in to a free Eraser account to edit, save, and export your diagrams.
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Is there an API?
Yes, you can read our API documentation. The API is only available to Starter, Business, and Enterprise Plan teams.
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Is there an MCP server?
Yes. The Eraser MCP server lets an agent create, search, read, update and export diagrams from clients like Claude, Cursor, VS Code and ChatGPT. It is free to use, subject to the AI credit limits of your plan.
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Do you use my data to train AI models?
No. Neither Eraser nor our model providers use your data to train AI models. Eraser may analyze usage to improve and enhance our AI features.
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How do I get started?
Describe what you need in the prompt box above and generate. You can keep refining the result with follow-up prompts.
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What’s next for this tool?
It only gets better from here. We’re working to improve accuracy and layout customization. If there’s something you’d like to see, drop us a note at hello@eraser.io.
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How do I get in touch?
We’d love to hear from you. Reach out at hello@eraser.io, on X (@eraserlabs), or join our Slack community.