Tool registration sounds like a lightweight module — scan directories, read files, fill a hash table. But doing it right and doing it reliably requires handling encoding detection, text parsing, race conditions, and startup performance — problems that aren't obvious at first glance. This article traces the complete chain from a .wasm file to an AI-callable tool, breaking down each step.
The Problems Registration Must Solve
Let's be clear about what this module needs to accomplish. Once a .wasm file is placed in the extensions directory, the system needs to know:
What its name is
What parameters it has, their types, and whether each is required
