lis186/sourceatlas/code-flow-tracer

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?"