We already build analysis tools. Only ...

Assessment becomes effective when it is accompanied by custom tools that match the problem. It is in everyone's interest for developers to take control and craft these custom tools. I recently put forward this thesis in a presentation at an agile company, and I got this remark from an engineer:

We already craft analysis tools. Only ... these tools are not reusable. And only we build them from time to time. And only we apply them infrequently.

Great. Only there should be no "only".