Developer Tools
Sequence Diagram Generator
Build Mermaid sequence diagrams from actor message lines.
Sequence Diagram Generator
Tool result
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Sequence diagram tool for API and workflow communication
This sequence diagram generator helps you describe who talks to whom and in what order. It is useful for API requests, authentication paths, support escalation flows, and any process where message timing matters.
Sequence diagram FAQ
Can I model API and login flows with this tool?
Yes. Sequence diagrams are ideal for requests, responses, authentication handshakes, webhook callbacks, and support interactions between actors.
How should I format each message line?
Use one interaction per line and describe the sender, receiver, and message clearly. That keeps the generated Mermaid sequence diagram readable and easy to edit.
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