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How to find the real callers before changing a behavior with Ripwire

Use the callers flag to see whether production code actually reaches a function.

Who it is forA developer or agent assigned to activate or modify a behavior that is believed to be live in production.

The problemA behavior can look wired up in the code while no production path actually calls it, which sends the task in the wrong direction.

The outcomeA clear answer on who calls the function, so the work targets the real gap rather than a phantom.

What you need first

  • A terminal with bash and curl to run the one-line installer
  • A local clone or checkout of the repository you want to explore
  • A coding agent that can run shell commands, such as Claude Code, Codex, Cursor, Windsurf, Gemini, opencode or aider

Steps

  1. Install Ripwire and add it to your path, as shown in the first use case.
  2. Change into the repository: cd your-repo
  3. Run the callers flag, named --callers, on the function in question. Look up its exact arguments in the reference guide before running it.
  4. If the result shows zero production callers, record that and investigate the missing wiring before writing new code.
  5. Confirm the finding by reading the call sites Ripwire reports.

Prompt for your agent

Use ripwire on the repo at <path>. Run the --callers flag on <function name> and report every production caller it finds. Verify the result by opening each reported call site.

Caveat. The README describes this as a lookup of the call graph, so an empty caller list should be checked against the code before drawing conclusions.

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