Skills

Mermaid Diagrams

Embeds Mermaid diagrams in wiki pages for flows, sequences, states, and data models.

Install

npx skills add langchain-ai/openwiki --skill mermaid-diagrams -g -a claude-code -y
Repository
langchain-ai/openwiki17.7k
Category
Documents
Updated
3d ago
License
MIT
Context cost
Lightabout 839 tokens
Runs scripts
No, instructions only

What it does

Embed Mermaid diagrams in generated wiki pages. Use whenever documenting a runtime or request flow, a call sequence, a state machine or lifecycle, a data model or entity relationships, or non-trivial control flow, since these are clearer as a diagram than as prose. Also use when an update run touches a page that already contains a mermaid fence, or a page that contains a text fence a previous run degraded.

Mermaid Diagrams In Generated Wiki Pages

Diagrams are part of high-quality wiki generation, not decoration. Where a flow, lifecycle, or data model is easier to grasp visually, embed a Mermaid diagram in a fenced ```mermaid block on the most relevant page.

Choosing a diagram type

  • sequenceDiagram for runtime and request flows across components (auth flows, request lifecycles, agent tool loops).
  • stateDiagram-v2 for lifecycles and state machines (job states, connection states, run phases).
  • erDiagram for the data model: entities and their relationships.
  • flowchart TD for branching control flow and decision logic.

Discipline

  • Ground every diagram in inspected source. Do not invent participants, states, entities, or relationships the code does not support.
  • Cover the high-value cases: add a diagram wherever a page documents a request or runtime flow, a call sequence, a lifecycle or state machine, or a data model. A repository wiki usually has several such diagrams, not one overall. Skip pages that are navigation, reference tables, or pure configuration.
  • Still prefer a few strong diagrams over decorating every page: one accurate diagram on the page that needs it beats a diagram forced onto every page.
  • Give each diagram a one-line caption directly below it stating what it shows.
  • OpenWiki validates every mermaid fence after your run and converts fences that fail to parse into plain text fences. A degraded diagram is a quality failure; follow the syntax rules below so it does not happen.

Syntax safety

These rules prevent the most common render breakages. When in doubt, rephrase the label.

Read the whole SKILL.md on GitHub

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