version: "1.0.1" name: mermaid description: Produce a clean Mermaid diagram (flowchart / sequence / class / state / ER / gantt / mindmap and others) for the user's requirement. Returns a single fenced ```mermaid block ready to render in the desktop chat.

Mermaid Diagram

Workflow

1. Pick the diagram type from the table below.
2. Read the matching reference file with file_read for syntax details and examples — only the file you actually need, to keep context small.
3. Emit a single fenced ```mermaid block with the diagram. No prose unless the user explicitly asked for an explanation.

Type → reference

If the user asks for a diagram type not in the table (gitGraph, pie, quadrantChart, xychart-beta, sankey-beta, C4Context, architecture-beta, kanban, journey, timeline, requirementDiagram), Mermaid supports it — emit the diagram using your knowledge of the syntax. Reach for the official docs only if you're unsure.

Output rules — applies to every diagram

• One fenced ```mermaid block. No prose inside the fence.
• The first non-blank line is the type keyword (flowchart TD, sequenceDiagram, …).
• Indent with two spaces. One statement per line.
• Quote any label containing punctuation: A["GET /users"] --> B.
• Use <br/> for line-breaks inside labels — not \n.
• Use semantic IDs (UserService, not n1).
• Keep labels short. Long labels make the layout explode.
• Do not add %%{init:…}%% directives or YAML frontmatter — the renderer already applies the project palette (mermaid neutral theme + transparent fills + monospace text). Override only if the user specifically asks.
• For accents on individual nodes, prefer top-level classDef over inline styles (hex colors only — Mermaid ignores CSS color names).
• Break a 30-node monster into 2–3 focused diagrams. Readability beats completeness.

Quick example

flowchart TD
  Start([User submits order]) --> Validate{Valid payload?}
  Validate -->|no| Reject[/Return 400/]
  Validate -->|yes| Reserve[Reserve inventory]
  Reserve --> Authorize[Authorize card]
  Authorize -->|approved| Confirm([Order confirmed])
  Authorize -->|declined| Release[Release inventory]
  Release --> Reject