# FAQs

1. Can I use joinstr on mainnet right now?\
   \
   Yes.<br>
2. Can I use joinstr without bitcoin core?\
   \
   Yes. It can be used as an electrum plugin which does not require bitcoin core. Although it is advised to use your EPS for better privacy instead of default electrum servers.<br>
3. Can I use joinstr on mobile?\
   \
   Yes. Android and iOS.<br>
4. What fees do I need to pay for using joinstr?\
   \
   a) Transaction fees which is contributed by all the participants\
   b) Nostr relay fee if using a paid relay\
   \
   Read more about [market making on joinstr](https://uncensoredtech.substack.com/p/market-makers-in-joinstr) to earn fees from pools.<br>
5. What pool denominations are supported in joinstr coinjoin rounds?\
   \
   Users can configure it and create pools based on custom denominations.&#x20;


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.joinstr.xyz/users/faqs.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.