AI Requirement Diagram generator
Describe your requirement diagram in plain English and get editable Mermaid code instantly. Trace requirements to the elements that satisfy and verify them (SysML).
Example prompts for a requirement diagram
- “Requirements for a password reset feature”
- “Safety requirements for an insulin pump”
- “Requirements for a payment API”
What a Mermaid requirement diagram looks like
Example requirement diagram
requirementDiagram
requirement login_req {
id: 1
text: Users must log in with email and password
risk: high
verifymethod: test
}
performanceRequirement speed_req {
id: 1.1
text: Login completes in under 1 second
risk: medium
verifymethod: analysis
}
element auth_service {
type: service
}
element login_tests {
type: "test suite"
}
auth_service - satisfies -> login_req
login_tests - verifies -> login_req
speed_req - derives -> login_reqWant to write it by hand? See the full Mermaid requirement diagram syntax and examples, or browse templates.
Frequently asked questions
How do I generate a requirement diagram with AI?
Describe the requirement diagram you need in the box above and click Generate. The AI writes valid Mermaid requirement diagram code that renders instantly, and you can open it in the editor to refine it.
Is the AI requirement diagram generator free?
You can try it free — 5 AI generations in total, no sign-up needed. Starter includes 500 AI conversations a month and Pro is unlimited. Manual editing and export stay free after that.
Can I edit the generated requirement diagram?
Absolutely. The output is plain Mermaid code — edit it by hand in the live editor, or ask the AI for changes in natural language.