Validating an idea: Domain search history & tracking tool

I'm in the validation phase of a side project and would love honest feedback from fellow builders.

The idea: A tool that automatically saves every domain you search, organizes them, and alerts you when domains become available.

Why I'm questioning it: I've hit that moment where I'm asking: "Is this a real problem or am I just building something I think is cool?"

What I've found so far:

• Read 50+ Reddit/Twitter threads where people mentioned losing track of domain ideas
• Most registrars don't save search history
• People seem to use spreadsheets or notes as workarounds

But I need to validate:

1. Have you ever lost track of a good domain idea? How often?
2. Is this a "need to have" or "nice to have" for you?
3. How do you currently track domain searches?
4. Would you actually use a tool like this, or is it one of those "sounds good but I'd never actually use it" ideas?

What I'm NOT doing:

• Not promoting anything (still in validation)
• Not trying to sell you anything
• Just genuinely trying to understand if this is worth building

Would especially love to hear from:

• Solo founders who've gone through the naming process
• Anyone who researches domains regularly
• People who've lost track of good domain ideas

Thanks in advance for your honest feedback!