Night Market Skill — ported from claude-night-market/cartograph. For the full experience with agents, hooks, and commands, install the Claude Code plugin.

Workflow Diagram#

Generate a Mermaid flowchart showing process workflows, pipelines, or state machines from code or documentation.

When To Use#

• Visualizing CI/CD or deployment pipelines
• Documenting multi-step development workflows
• Mapping state machines or lifecycle processes
• Answering "what steps happen when X runs?"

Workflow#

Step 1: Explore the Codebase#

Dispatch the codebase explorer agent:

text

Agent(cartograph:codebase-explorer)
Prompt: Explore [scope] and return a structural model.
Focus on process steps, conditional logic, state
transitions, and pipeline stages for a workflow diagram.
Look for: Makefiles, CI configs, hook chains, command
sequences, and lifecycle methods.

Step 2: Generate Mermaid Syntax#

Transform the structural model into a Mermaid flowchart with decision nodes and process steps.

Rules for workflow diagrams:

• Use flowchart TD for sequential processes
• Use flowchart LR for pipelines with parallel tracks
• Use shapes to distinguish step types:
  • [Rectangle] for process steps
  • {Diamond} for decision points
  • ([Stadium]) for start/end states
  • [[Subroutine]] for sub-processes
  • ((Circle)) for join/sync points
• Use -->|label| for transition conditions
• Group parallel tracks into subgraphs
• Color-code by outcome:
  • Default for happy path
  • Dotted ( -.->) for error/fallback paths
  • Thick ( ==>) for critical path
• Limit to 20 nodes maximum

Example output:

Rendering diagram...

Step 3: Render via MCP#

Call the Mermaid Chart MCP to render:

text

mcp__claude_ai_Mermaid_Chart__validate_and_render_mermaid_diagram
  prompt: "Workflow diagram of [scope/process]"
  mermaidCode: [generated syntax]
  diagramType: "flowchart"
  clientName: "claude-code"

If rendering fails, fix syntax and retry (max 2 retries).

Step 4: Present Results#

Show the rendered diagram with a brief description of the workflow stages and decision points (2-3 sentences).