Templates
Starters for engineers, product, and security—sequence diagrams, flowcharts, state, and class models.
ExampleOptional blocks
Optional step or side effect
Optional fragment when something may happen.
ExampleActivation
Call stack / focus on a lifeline
Show active focus when a call is in progress.
ExampleAPI & backends
HTTP API hitting a database
For backend devs documenting CRUD-style reads.
ExampleAuth & identity
Authorization flow with an identity provider
Simplified OAuth-style sign-in for app security discussions.
ExampleEvents & async
Publish, deliver, consume
For integration and event-driven architectures.
ExampleClass models
Orders and line items (domain sketch)
For architects sketching a small domain model.