Lol, this is my PR. That cost is misleading. That workspace did far more than that change. In reality I spend ~$1000/week in tokens for all of my development work, and I'm quite happy with the exchange.

Curious to hear more.. why is random port selection not working for your case? The other issue we've seen is machines tend to get overloaded with tons of agents running tests concurrently, hence the SSH remote isolation mode.

It's working, just a bit fiddly to setup.

Author of Mux here:

I started building it out that way but found it very challenging to create parity between the models. E.g. they have different tools, system prompts, interruption semantics, cost tracking etc. The spirit of the product is decoupling the LLM from the UI, so we went with a custom loop / tools that can perform decently across all models.

I wrote up some tips on that here: https://cmux.io/prompting-tips.html — most of it is generally applicable outside of `cmux`

I meant read-only there in the sense of mutability, not exfiltration.

Of course, some websites may permit mutations through GET so it’s probably only sensible to use alongside known hosts.

``` GET https://mysite.com/?query=all+the+secrets ```

/shrug

The implementation is so simple it's quite the cat and mouse game if they want to become litigious

Cool to see. I'm currently #1 on the Kalshi volume leaderboard (https://kalshi.com/social/leaderboard) with a proprietary market making algorithm.

There is plenty of money to be made on Kalshi, but I had to rethink the math from the ground up as most of the literature describes highly liquid, somewhat stable markets.

One small change you could make to your algorithm is to calculate the skews/spreads in log-odds space. A change in price from 50c to 49c represents a very small delta in expected return whereas 2c to 1c is a doubling. Dealing with probability contracts in log-odds controls for this effect.

That's awesome! Yes, not being able to place fractional cent costs makes the problem unique relative to other markets.

I will give this a shot! And if you would be willing to collaborate, please shoot me an email.

Unfortunately collaboration here would kill my alpha ;)

Is volume going up?

I've been recording every trade across the platform for the past 3 months, which is when I began my operation.

Median Daily Volume (M$)

Dec 2024 - 10.2

Jan 2025 - 5.04

Feb 2025 - 5.89

So, in short, my data is inconclusive. I've been impressed with their marketing and business development though. They seem to be cozy with the new administration and I imagine any headwinds they had from the CFTC are disappearing.

That February number is quite promising! Thanks.

Daily trading volume is about ~$5m

I think this post overhypes the issue. So many writes we do just aren’t that important (e.g. logs, cli config, blah), Close fails rarely, and it’s pretty standard for casually developed application software to misbehave once the disk is full or breaking.

This is a classic safety / performance trade off that was properly selected in favor of performance.

The defer Close() is still quite useful as a way to avoid fd leaks.

To scale such an approach you could have the LLM generate JS to walk the DOM and extract content, caching the JS for each page.