Sequence Diagram Skill

Generate UML-2.x-lite sequence diagrams as self-contained SVG files, sharing the blueprint aesthetic of the sibling architecture-diagram and mindmap skills: dark #020617 background, JetBrains Mono, halo text, semantic palette, deterministic geometry-audit gate.

What triggers this skill

• "Draw a sequence diagram of X"
• "Show the [OAuth | login | checkout | webhook] flow over time"
• "Ladder diagram for protocol Y"
• "Show the message exchange between A and B"
• "Activity diagram of [request]" — users frequently conflate these; default to sequence when there's a clear temporal order of messages between named actors
• Any request whose answer is "X happens, then Y, then Z" with named actors

When to use this skill vs siblings