Audio Fft Sanity
FFT-based sanity check for audio output files — verifies fundamental frequency, THD, SNR, clipping, and silence. Use after offline C tests or WASM OfflineAudioContext captures to confirm a signal chain is producing correct output.
Wasm Module Inspect
Inspect a compiled .wasm binary — validates structure, lists exports and imports, detects SIMD and threading opcodes, and reports binary size. Requires wabt; wasm-opt (Binaryen) is optional.
Faust Header Gen
Generate a matching extern "C" header from a Faust-generated C file. Extracts public function signatures, applies the opaque-typedef pattern, and emits a correctly guarded header. Eliminates the manual header maintenance step and prevents header/implementation drift.
Wasm Pack Build
Opinionated wasm-pack wrapper that builds a Rust crate to wasm32-unknown-unknown with project-pinned flags (SIMD, LTO, panic=abort), applies a wasm-opt post-pass, and auto-invokes wasm-module-inspect on the result. Single entry point so the agent never reaches for raw wasm-pack and forgets a flag.
Rust Rt Audit
Audit a Rust DSP crate for real-time-safety violations — verifies `#![no_std]`, no `alloc` dependency, `panic = "abort"`, runs targeted clippy lints, greps for banned constructs in the hot path, and scans the compiled LLVM-IR for allocator symbols. Designed to be run on any Rust DSP crate before merge.
Dembrandt
Extract design tokens from any live website using the Dembrandt CLI, and save them in W3C Design Tokens (DTCG) format. Use when you need to inspect or borrow a site's design system.
Log Pattern Scan
Scan Claude Code JSONL session transcript files for behavioral patterns — loops, errors, expensive turns, trial-and-error signatures. Returns structured findings for the improvement-analyst agent.
Emscripten Env Audit
Static analysis of Emscripten build flags targeting AudioWorkletGlobalScope. Parses a Makefile or build script, extracts emcc flags, and cross-references against a known list of APIs unavailable in the worklet environment. Flags configuration patterns that will cause runtime failures in the browser.
Wasm Worklet Smoke
Headless Playwright smoke test for an Emscripten + AudioWorklet WASM build. Builds the WASM target, serves it locally, launches headless Chrome, clicks Start Audio, verifies the engine initialises without console errors, and checks for non-silent audio output.
Faust Build
Compile a Faust DSP source file to C, verify the API surface (function names, I/O counts, struct name), and optionally compile the result with clang. Runs a parameter smoothing audit before compilation. Use after any change to a .dsp file.
Miri Dsp
Run `cargo +nightly miri test` against a Rust DSP crate to detect undefined behaviour the compiler missed — out-of-bounds access, use-after-free, uninitialised memory reads, invalid pointer arithmetic. Miri is the cheapest sound UB detector for Rust; this skill wraps it with the right isolation flags for audio DSP crates.
Cbindgen Verify
Regenerate a C header from a Rust crate via cbindgen and diff it against the committed header. Fails if the generated output differs — catches "Rust signature changed but the C header was not regenerated" before it reaches the C side.
Cargo Bench Rt
Run a Criterion benchmark on a Rust DSP crate and assert against a checked-in baseline. Establishes whether the implementation fits the real-time budget and catches performance regressions — the Rust equivalent of `perf stat` against the audio buffer time.