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MERMAID DIAGRAM GUIDE

Mermaid requirement diagram online editor

Connect requirements, elements, and verification relationships. Create the diagram in Mermaid Studio, preview it instantly, and export it when it is ready to share.

Open the Requirement editor See an example

WHAT IT IS FOR

Make the important relationships clear

Connect requirements to systems, elements, and verification methods so teams can trace what must be built and tested.

Document regulated requirements
Trace software specifications
Plan verification and test coverage

Why use Mermaid Studio?

Write the source as versionable Mermaid code.
Preview changes immediately in the browser.
Export the finished diagram as SVG or PNG.
Start from a related template when you need a head start.

MERMAID EXAMPLE

Start with a working example

Copy the structure, replace the labels with your own domain, and continue in the full editor.

requirementDiagram
  requirement fast_editor {
    id: 1
    text: The user Code When input Immediately Result Must review Does
    risk: high
    verifymethod: test
  }
  element renderer {
    type: software
  }
  renderer - satisfies -> fast_editor

HOW TO START

Create your diagram in four steps

1Give each requirement a stable identifier.
2Describe the requirement in testable language.
3Add the element that satisfies it.
4Connect the requirement to its verification method.

WRITING TIPS

Keep the diagram useful

Give each requirement a unique identifier.

Connect requirements to the elements that satisfy them.

FAQ

Frequently asked questions

What does a requirement diagram show?+

It shows requirements and their relationships to elements, risks, and verification activities.

Who benefits from requirement diagrams?+

Product, engineering, QA, and compliance teams can use them to keep specifications traceable.

TEMPLATES

Start from a related template

Authentication requirements

Connect security requirements to the system elements that satisfy them.

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Ready to make a Requirement?

Open the editor with a working example and adapt it to your project.

Start in Mermaid Studio