deemwar
Worked, runnable patterns pulled from real problems. Each one is a self-contained reference you can read in a sitting, run locally, and lift into your own code. Engineering-first — no slideware.
A $25 cap that still let an agent fleet burn $1,771 in four hours — because the cap incremented after each call, so concurrent workers each passed it and collectively blew past. Reserve-before / reconcile-after, a burn-rate soft threshold, and one cap above every provider SDK.
More examples land here as we hit the problems worth writing up. Each is judged on one thing: does the code run and hold up.