How to find creators to work with
Look at what a creator makes and who it's for before you ask them to try or promote your product.
A creator with a large audience isn't automatically the right person for your product. The useful question is whether their viewers would care about what you make.
If you're building a developer tool, a small creator who regularly teaches the exact problem you solve may be worth a closer look.
Search for the topic they cover
Try a request like this in ReacherX:
Find creators on X/Twitter and LinkedIn who teach solo developers how to launch web apps. I'm looking for people who share hands-on tutorials, not just general startup advice.
Then open their work. What do they explain? Who asks questions in the replies? Do they review products, teach with them, or mainly share opinions?
Those details should influence what you ask them to do. A tutorial creator and an interviewer may need very different proposals.
Give them a useful way to try it
If you're asking a creator to cover your app, suggest the slot it fits: the next step in a tutorial they already teach, or a problem their audience keeps asking about.
You could write:
Your tutorial on launching a side project made me think our tool might be useful for the next step: finding people to try it. Would you like to test it? I can send a short walkthrough.
Use a demo that shows the part their audience would understand. Be clear about whether you're offering payment, product access, or simply asking for feedback. Don't leave them to guess whether this is a paid project.
Agree on the work before it starts
Discuss the format, timing, payment, and what they are free to say about the product. If they've tried it and don't like it, that's useful feedback too.
You can manage the conversation in ReacherX and keep track of creators you're speaking with.