code-flow-tracer

name	code-flow-tracer
description	Trace code execution paths and data flow. Use when user asks "how does X work", "what happens when X", "trace the flow of X", "where does data come from", or needs to understand feature implementation.

Code Flow Tracer

When to Use

Trigger this skill when the user:

• Wants to understand how a feature works end-to-end
• Asks what happens when an action is triggered
• Needs to trace data flow through the system
• Asks "how does X work"
• Asks "what calls X" or "what does X call"

Instructions

1. Identify the feature, function, or flow the user wants to trace
2. Run /sourceatlas:flow "<query>" with a natural language description
3. Returns call graph, boundary detection, and flow visualization

Query Formats

• Feature flow: /sourceatlas:flow "user login"
• Function trace: /sourceatlas:flow "handleSubmit"
• Error paths: /sourceatlas:flow "error handling flow"
• Data origin: /sourceatlas:flow "where does userProfile come from"
• Reverse trace: /sourceatlas:flow "who calls validateToken"

What User Gets

• Call graph visualization (ASCII tree)
• Boundary detection (API, DB, LIB, CLOUD markers)
• Recursion and cycle detection
• Entry points identification
• 11 analysis modes available

Example Triggers

• "How does the login flow work?"
• "What happens when user clicks submit?"
• "Trace the checkout process"
• "Where does this data come from?"
• "Who calls this function?"