- `continuity` is a `lean4` metaprogramming system that we use all kinds of ways but the real meat is it allows formal specification of codecs and state machines in ways that make security and performance properties proof amenable, the key trick here is to limit parser power to just what you need and no more. a very cool thing is that we can add targets to it, so when we do Zig for example, Zig will immediately get proven correct and frontier performance support for dozens of protocols that are not all mature right now.

- `libevring-cpp` (bound up into `libevring-hs` and `libevring-rs`) is a Trinity-inspired deterministic event replay system that replaces anything you would have done with `libuv` or whatever, and it's wired into `io_uring` (we're stuck with `kqueue` on darwin, eh). it interfaces with `continuity` machines and codecs (which are generated very carefully for the hardware they run on) and we have yet to find a way of measuring such programs where it doesn't resoundingly shatter the performance of any other asynchronous programming primitive in any language. i'm sure the community will prove us wrong when we release it, but it's real fast. and you get much stronger guarantees than in most such systems (Trinity derived, so if you can repro a bug, you can walk the event trace until it's sitting there in GDB and shit)

- `hyperconsole-cpp` (and `hyperconsole-hs` and `hyperconsole-rs`) is the TUI library idea taken to some deranged extreme on performance and supports everything in `notcurses`, it's pretty wild: https://youtu.be/YqgEtpJ8tGI

- straylight-nix is a complete rewrite of nix that fixes thousands of bugs, hundreds of them security adjacent and dozens of them we only talk to vendors about. it's daemonless, dramatically faster, ground-up WASM-targeting compiler with a formal grammer, uses an extremely fast LSM-based store (it can read the legacy store but we don't write it) that fixes all the problems in floating CA, IFD is too cheap to care about, and recursive nix is no longer and issue (see daemonless). it supports tearing derivations into `REAPI` actions that you can feed to your friendly native NativeLink or whatever, which just goes through them like a woodchipper. KVM-based sandbox with snapshot and restore, really opens the world up on what your builders can be.

- `slide` is the reference implementation of a family of protocols called `SIGIL`: `SIGIL-LLM` is a binary encoding for LLM data that resets on ambiguity and drops the average bytes on the wire from e.g. OpenRouter to your harness from ~hundreds to ~1.5 per token, `SIGIL-API` is a bijection on OpenAPI 3.1.0 and AsyncAPI 3.0.0 that gives comparable improvements, and `SIGIL-SH` is such an encoding for a sensible subset of bash. this does about 1.5 billion tokens per second on a laptop and never emits partial frames, so you don't get speculative execution rollback problems in your harness that tilt agents off.

- `// WEAPON //` is an adversarial, vendor-skeptical, full-take surveilance agemt harness built on `hyperconsole-cpp` and `SIGIL` (so, you could absorb the entire token output of OpenRouter on one machine if you wanted at least on the wire and in the terminal, clearly the bottleneck rapidly becomes whatever the agents are calling, but it's `zmq4` transport underneath `SIGIL` so it's also trivial to full-take all of your data for fine tuning or whatever you want it for into e.g. `parquet` on R2. `// WEAPON //` does a bunch of stuff: the tool call surface is heavily optimized for AST-level edits that miss dramatically less, we intercept and manipulate shell commands (slice off the stupid `| tail -n5` that keeps the droid in a loop not seeing the error, pre-emptively ground using heuristics that have been tuned (defeats the search flinch), and always recovers from any stall, or nag box, or anything else that would serve as an unannounced rate limit, it's fine if vendors rate limit but they need to put it in their ToS. it has a bunch of other primitives, agents run in real KVM sandboxes and speculate out as wide as you want to pay the tokens for. we hyper-manage things like the cache breakpoint geometry of Anthropic so e.g. Opus rarely misses in cache and always hands off edits to specialized tool use models. it's pretty extreme the difference in outcomes relative to all this React jank.

- `s4` is a general-purpose compiler from most any pytorch 2.0 model to `myelin`-level performance on NVIDIA (we only support NVIDIA Blackwell at the moment, that might change) and it's never worse than `myelin` because if we don't out-tune it we invoke it, but we out tune it a lot because we've proven a lot of decideability theorems about tiling and scheduling on both 1CTA and 2CTA, so we can often arrive at a finite, enumerable set of schedule/tile choices. `myelin` mops up the random garbage around the big GEMMs just like in TRT-LLM.

- `sigil-trtllm` is inspired by TensorRT-LLM-Edge but designed from the ground up around Mellanox/ConnectX and in particular GPUDirect, so it can stream `SIGIL-LLM` tokens directly onto the wire whereas something like Dynamo is usually traversing both Python and NATS, which is super weird to us. this uses the `s4` compiler very heavily.

- `straylight-cas` is a geographically distributed content addressable store backed by any R2-compatible (so most any S3-compatible too) object store with multi-level LSM and extreme performance memtables, optimistic hinted handoff over `zmq4` to other geographies, and a really simple operational story, this is kind of the thing that powers the product surface.

... which is the thing i'm less ready to talk about because it's supposed to be a surprise.