How can you design for tool reusability?

• A. Create modular, well-documented tools with stable interfaces that can be reused across tasks.
• B. Create bespoke tools for each task with unique interfaces.
• C. Change interfaces frequently to accommodate new tasks.
• D. Avoid documentation to keep tools lightweight.

Answer: (A)

Designing for tool reusability means building components that can be plugged into different tasks without rewriting them. The key is to create modular tools with clear, stable interfaces. When a tool has a well-defined API and limited scope, it can be combined with other tools in many different workflows without breaking. Stability in interfaces means once you expose how to use a tool, you avoid frequent changes that would force others to rewrite code or adjust integrations. Coupling that with good documentation and discoverability makes it easy for others to find, understand, and reuse the tool in new contexts.

In practice, you design tools to be parameterizable and composable, with consistent input/output expectations and versioned interfaces so future updates don’t suddenly disrupt existing setups. This approach enables building more complex pipelines by mixing and matching existing components, reduces duplication, and simplifies maintenance.

The other paths undermine reuse: creating bespoke tools for each task results in many one-off solutions that aren’t usable elsewhere; changing interfaces frequently breaks compatibility and forces rework; and skipping documentation leaves potential users in the dark about how to adapt or combine tools, hindering reuse altogether.