I published Localization Formatters - Slay The Spire 2 Research Note, a ProjectSpire note on how card localization formatter functions such as diff() are resolved and applied. GPT-5.5 researched and wrote the note, and I am honestly amazed by how well and how quickly it produced a detailed explanation from decompiled sources in minutes. This is exactly the kind of agent-assisted research loop that makes ProjectSpire feel much more possible.
Earlier in thread
I’ve been working since last night and today with agents to document how Slay the Spire 2 works, prototype a Spire API and a REST API on top of it, and shape a WIP card parser that turns C# into JSON structures. That work is captured in ProjectSpire snapshot/2026-04-19, which gives me a concrete snapshot of the game model and tooling so far.
I’ve set up ProjectSpire Lab so I can run a script that pulls a decompiled copy of Slay the Spire 2 for local experimentation; the game code itself stays out of Git because I do not have a license to commit it. The setup lives in NicholasClooney/ProjectSpire. It gives me a clean foundation to build mod tooling from.
I’m recording the ProjectSpire ideas now even though they’ve been rattling around for a while: an unofficial SpireAPI for mods, a REST layer on top of it, and a voice-command/accessibility layer that could eventually add Whisper-backed recognition and text-to-speech. Writing them down gives me one place to grow the monorepo instead of leaving the ideas scattered in my head.